first commit

.venv/Lib/site-packages/tornado/test/__main__.py

@@ -0,0 +1,12 @@
+"""Shim to allow python -m tornado.test.
+
+This only works in python 2.7+.
+"""
+from tornado.test.runtests import all, main
+
+# tornado.testing.main autodiscovery relies on 'all' being present in
+# the main module, so import it here even though it is not used directly.
+# The following line prevents a pyflakes warning.
+all = all
+
+main()

.venv/Lib/site-packages/tornado/test/asyncio_test.py

@@ -0,0 +1,190 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import asyncio
+import unittest
+
+from concurrent.futures import ThreadPoolExecutor
+from tornado import gen
+from tornado.ioloop import IOLoop
+from tornado.platform.asyncio import (
+    AsyncIOLoop,
+    to_asyncio_future,
+    AnyThreadEventLoopPolicy,
+)
+from tornado.testing import AsyncTestCase, gen_test
+
+
+class AsyncIOLoopTest(AsyncTestCase):
+    def get_new_ioloop(self):
+        io_loop = AsyncIOLoop()
+        return io_loop
+
+    def test_asyncio_callback(self):
+        # Basic test that the asyncio loop is set up correctly.
+        asyncio.get_event_loop().call_soon(self.stop)
+        self.wait()
+
+    @gen_test
+    def test_asyncio_future(self):
+        # Test that we can yield an asyncio future from a tornado coroutine.
+        # Without 'yield from', we must wrap coroutines in ensure_future,
+        # which was introduced during Python 3.4, deprecating the prior "async".
+        if hasattr(asyncio, "ensure_future"):
+            ensure_future = asyncio.ensure_future
+        else:
+            # async is a reserved word in Python 3.7
+            ensure_future = getattr(asyncio, "async")
+
+        x = yield ensure_future(
+            asyncio.get_event_loop().run_in_executor(None, lambda: 42)
+        )
+        self.assertEqual(x, 42)
+
+    @gen_test
+    def test_asyncio_yield_from(self):
+        @gen.coroutine
+        def f():
+            event_loop = asyncio.get_event_loop()
+            x = yield from event_loop.run_in_executor(None, lambda: 42)
+            return x
+
+        result = yield f()
+        self.assertEqual(result, 42)
+
+    def test_asyncio_adapter(self):
+        # This test demonstrates that when using the asyncio coroutine
+        # runner (i.e. run_until_complete), the to_asyncio_future
+        # adapter is needed. No adapter is needed in the other direction,
+        # as demonstrated by other tests in the package.
+        @gen.coroutine
+        def tornado_coroutine():
+            yield gen.moment
+            raise gen.Return(42)
+
+        async def native_coroutine_without_adapter():
+            return await tornado_coroutine()
+
+        async def native_coroutine_with_adapter():
+            return await to_asyncio_future(tornado_coroutine())
+
+        # Use the adapter, but two degrees from the tornado coroutine.
+        async def native_coroutine_with_adapter2():
+            return await to_asyncio_future(native_coroutine_without_adapter())
+
+        # Tornado supports native coroutines both with and without adapters
+        self.assertEqual(self.io_loop.run_sync(native_coroutine_without_adapter), 42)
+        self.assertEqual(self.io_loop.run_sync(native_coroutine_with_adapter), 42)
+        self.assertEqual(self.io_loop.run_sync(native_coroutine_with_adapter2), 42)
+
+        # Asyncio only supports coroutines that yield asyncio-compatible
+        # Futures (which our Future is since 5.0).
+        self.assertEqual(
+            asyncio.get_event_loop().run_until_complete(
+                native_coroutine_without_adapter()
+            ),
+            42,
+        )
+        self.assertEqual(
+            asyncio.get_event_loop().run_until_complete(
+                native_coroutine_with_adapter()
+            ),
+            42,
+        )
+        self.assertEqual(
+            asyncio.get_event_loop().run_until_complete(
+                native_coroutine_with_adapter2()
+            ),
+            42,
+        )
+
+
+class LeakTest(unittest.TestCase):
+    def setUp(self):
+        # Trigger a cleanup of the mapping so we start with a clean slate.
+        AsyncIOLoop().close()
+        # If we don't clean up after ourselves other tests may fail on
+        # py34.
+        self.orig_policy = asyncio.get_event_loop_policy()
+        asyncio.set_event_loop_policy(asyncio.DefaultEventLoopPolicy())
+
+    def tearDown(self):
+        asyncio.get_event_loop().close()
+        asyncio.set_event_loop_policy(self.orig_policy)
+
+    def test_ioloop_close_leak(self):
+        orig_count = len(IOLoop._ioloop_for_asyncio)
+        for i in range(10):
+            # Create and close an AsyncIOLoop using Tornado interfaces.
+            loop = AsyncIOLoop()
+            loop.close()
+        new_count = len(IOLoop._ioloop_for_asyncio) - orig_count
+        self.assertEqual(new_count, 0)
+
+    def test_asyncio_close_leak(self):
+        orig_count = len(IOLoop._ioloop_for_asyncio)
+        for i in range(10):
+            # Create and close an AsyncIOMainLoop using asyncio interfaces.
+            loop = asyncio.new_event_loop()
+            loop.call_soon(IOLoop.current)
+            loop.call_soon(loop.stop)
+            loop.run_forever()
+            loop.close()
+        new_count = len(IOLoop._ioloop_for_asyncio) - orig_count
+        # Because the cleanup is run on new loop creation, we have one
+        # dangling entry in the map (but only one).
+        self.assertEqual(new_count, 1)
+
+
+class AnyThreadEventLoopPolicyTest(unittest.TestCase):
+    def setUp(self):
+        self.orig_policy = asyncio.get_event_loop_policy()
+        self.executor = ThreadPoolExecutor(1)
+
+    def tearDown(self):
+        asyncio.set_event_loop_policy(self.orig_policy)
+        self.executor.shutdown()
+
+    def get_event_loop_on_thread(self):
+        def get_and_close_event_loop():
+            """Get the event loop. Close it if one is returned.
+
+            Returns the (closed) event loop. This is a silly thing
+            to do and leaves the thread in a broken state, but it's
+            enough for this test. Closing the loop avoids resource
+            leak warnings.
+            """
+            loop = asyncio.get_event_loop()
+            loop.close()
+            return loop
+
+        future = self.executor.submit(get_and_close_event_loop)
+        return future.result()
+
+    def run_policy_test(self, accessor, expected_type):
+        # With the default policy, non-main threads don't get an event
+        # loop.
+        self.assertRaises(
+            (RuntimeError, AssertionError), self.executor.submit(accessor).result
+        )
+        # Set the policy and we can get a loop.
+        asyncio.set_event_loop_policy(AnyThreadEventLoopPolicy())
+        self.assertIsInstance(self.executor.submit(accessor).result(), expected_type)
+        # Clean up to silence leak warnings. Always use asyncio since
+        # IOLoop doesn't (currently) close the underlying loop.
+        self.executor.submit(lambda: asyncio.get_event_loop().close()).result()  # type: ignore
+
+    def test_asyncio_accessor(self):
+        self.run_policy_test(asyncio.get_event_loop, asyncio.AbstractEventLoop)
+
+    def test_tornado_accessor(self):
+        self.run_policy_test(IOLoop.current, IOLoop)

.venv/Lib/site-packages/tornado/test/auth_test.py

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+# These tests do not currently do much to verify the correct implementation
+# of the openid/oauth protocols, they just exercise the major code paths
+# and ensure that it doesn't blow up (e.g. with unicode/bytes issues in
+# python 3)
+
+import unittest
+
+from tornado.auth import (
+    OpenIdMixin,
+    OAuthMixin,
+    OAuth2Mixin,
+    GoogleOAuth2Mixin,
+    FacebookGraphMixin,
+    TwitterMixin,
+)
+from tornado.escape import json_decode
+from tornado import gen
+from tornado.httpclient import HTTPClientError
+from tornado.httputil import url_concat
+from tornado.log import app_log
+from tornado.testing import AsyncHTTPTestCase, ExpectLog
+from tornado.web import RequestHandler, Application, HTTPError
+
+try:
+    from unittest import mock
+except ImportError:
+    mock = None  # type: ignore
+
+
+class OpenIdClientLoginHandler(RequestHandler, OpenIdMixin):
+    def initialize(self, test):
+        self._OPENID_ENDPOINT = test.get_url("/openid/server/authenticate")
+
+    @gen.coroutine
+    def get(self):
+        if self.get_argument("openid.mode", None):
+            user = yield self.get_authenticated_user(
+                http_client=self.settings["http_client"]
+            )
+            if user is None:
+                raise Exception("user is None")
+            self.finish(user)
+            return
+        res = self.authenticate_redirect()  # type: ignore
+        assert res is None
+
+
+class OpenIdServerAuthenticateHandler(RequestHandler):
+    def post(self):
+        if self.get_argument("openid.mode") != "check_authentication":
+            raise Exception("incorrect openid.mode %r")
+        self.write("is_valid:true")
+
+
+class OAuth1ClientLoginHandler(RequestHandler, OAuthMixin):
+    def initialize(self, test, version):
+        self._OAUTH_VERSION = version
+        self._OAUTH_REQUEST_TOKEN_URL = test.get_url("/oauth1/server/request_token")
+        self._OAUTH_AUTHORIZE_URL = test.get_url("/oauth1/server/authorize")
+        self._OAUTH_ACCESS_TOKEN_URL = test.get_url("/oauth1/server/access_token")
+
+    def _oauth_consumer_token(self):
+        return dict(key="asdf", secret="qwer")
+
+    @gen.coroutine
+    def get(self):
+        if self.get_argument("oauth_token", None):
+            user = yield self.get_authenticated_user(
+                http_client=self.settings["http_client"]
+            )
+            if user is None:
+                raise Exception("user is None")
+            self.finish(user)
+            return
+        yield self.authorize_redirect(http_client=self.settings["http_client"])
+
+    @gen.coroutine
+    def _oauth_get_user_future(self, access_token):
+        if self.get_argument("fail_in_get_user", None):
+            raise Exception("failing in get_user")
+        if access_token != dict(key="uiop", secret="5678"):
+            raise Exception("incorrect access token %r" % access_token)
+        return dict(email="foo@example.com")
+
+
+class OAuth1ClientLoginCoroutineHandler(OAuth1ClientLoginHandler):
+    """Replaces OAuth1ClientLoginCoroutineHandler's get() with a coroutine."""
+
+    @gen.coroutine
+    def get(self):
+        if self.get_argument("oauth_token", None):
+            # Ensure that any exceptions are set on the returned Future,
+            # not simply thrown into the surrounding StackContext.
+            try:
+                yield self.get_authenticated_user()
+            except Exception as e:
+                self.set_status(503)
+                self.write("got exception: %s" % e)
+        else:
+            yield self.authorize_redirect()
+
+
+class OAuth1ClientRequestParametersHandler(RequestHandler, OAuthMixin):
+    def initialize(self, version):
+        self._OAUTH_VERSION = version
+
+    def _oauth_consumer_token(self):
+        return dict(key="asdf", secret="qwer")
+
+    def get(self):
+        params = self._oauth_request_parameters(
+            "http://www.example.com/api/asdf",
+            dict(key="uiop", secret="5678"),
+            parameters=dict(foo="bar"),
+        )
+        self.write(params)
+
+
+class OAuth1ServerRequestTokenHandler(RequestHandler):
+    def get(self):
+        self.write("oauth_token=zxcv&oauth_token_secret=1234")
+
+
+class OAuth1ServerAccessTokenHandler(RequestHandler):
+    def get(self):
+        self.write("oauth_token=uiop&oauth_token_secret=5678")
+
+
+class OAuth2ClientLoginHandler(RequestHandler, OAuth2Mixin):
+    def initialize(self, test):
+        self._OAUTH_AUTHORIZE_URL = test.get_url("/oauth2/server/authorize")
+
+    def get(self):
+        res = self.authorize_redirect()  # type: ignore
+        assert res is None
+
+
+class FacebookClientLoginHandler(RequestHandler, FacebookGraphMixin):
+    def initialize(self, test):
+        self._OAUTH_AUTHORIZE_URL = test.get_url("/facebook/server/authorize")
+        self._OAUTH_ACCESS_TOKEN_URL = test.get_url("/facebook/server/access_token")
+        self._FACEBOOK_BASE_URL = test.get_url("/facebook/server")
+
+    @gen.coroutine
+    def get(self):
+        if self.get_argument("code", None):
+            user = yield self.get_authenticated_user(
+                redirect_uri=self.request.full_url(),
+                client_id=self.settings["facebook_api_key"],
+                client_secret=self.settings["facebook_secret"],
+                code=self.get_argument("code"),
+            )
+            self.write(user)
+        else:
+            self.authorize_redirect(
+                redirect_uri=self.request.full_url(),
+                client_id=self.settings["facebook_api_key"],
+                extra_params={"scope": "read_stream,offline_access"},
+            )
+
+
+class FacebookServerAccessTokenHandler(RequestHandler):
+    def get(self):
+        self.write(dict(access_token="asdf", expires_in=3600))
+
+
+class FacebookServerMeHandler(RequestHandler):
+    def get(self):
+        self.write("{}")
+
+
+class TwitterClientHandler(RequestHandler, TwitterMixin):
+    def initialize(self, test):
+        self._OAUTH_REQUEST_TOKEN_URL = test.get_url("/oauth1/server/request_token")
+        self._OAUTH_ACCESS_TOKEN_URL = test.get_url("/twitter/server/access_token")
+        self._OAUTH_AUTHORIZE_URL = test.get_url("/oauth1/server/authorize")
+        self._OAUTH_AUTHENTICATE_URL = test.get_url("/twitter/server/authenticate")
+        self._TWITTER_BASE_URL = test.get_url("/twitter/api")
+
+    def get_auth_http_client(self):
+        return self.settings["http_client"]
+
+
+class TwitterClientLoginHandler(TwitterClientHandler):
+    @gen.coroutine
+    def get(self):
+        if self.get_argument("oauth_token", None):
+            user = yield self.get_authenticated_user()
+            if user is None:
+                raise Exception("user is None")
+            self.finish(user)
+            return
+        yield self.authorize_redirect()
+
+
+class TwitterClientAuthenticateHandler(TwitterClientHandler):
+    # Like TwitterClientLoginHandler, but uses authenticate_redirect
+    # instead of authorize_redirect.
+    @gen.coroutine
+    def get(self):
+        if self.get_argument("oauth_token", None):
+            user = yield self.get_authenticated_user()
+            if user is None:
+                raise Exception("user is None")
+            self.finish(user)
+            return
+        yield self.authenticate_redirect()
+
+
+class TwitterClientLoginGenCoroutineHandler(TwitterClientHandler):
+    @gen.coroutine
+    def get(self):
+        if self.get_argument("oauth_token", None):
+            user = yield self.get_authenticated_user()
+            self.finish(user)
+        else:
+            # New style: with @gen.coroutine the result must be yielded
+            # or else the request will be auto-finished too soon.
+            yield self.authorize_redirect()
+
+
+class TwitterClientShowUserHandler(TwitterClientHandler):
+    @gen.coroutine
+    def get(self):
+        # TODO: would be nice to go through the login flow instead of
+        # cheating with a hard-coded access token.
+        try:
+            response = yield self.twitter_request(
+                "/users/show/%s" % self.get_argument("name"),
+                access_token=dict(key="hjkl", secret="vbnm"),
+            )
+        except HTTPClientError:
+            # TODO(bdarnell): Should we catch HTTP errors and
+            # transform some of them (like 403s) into AuthError?
+            self.set_status(500)
+            self.finish("error from twitter request")
+        else:
+            self.finish(response)
+
+
+class TwitterServerAccessTokenHandler(RequestHandler):
+    def get(self):
+        self.write("oauth_token=hjkl&oauth_token_secret=vbnm&screen_name=foo")
+
+
+class TwitterServerShowUserHandler(RequestHandler):
+    def get(self, screen_name):
+        if screen_name == "error":
+            raise HTTPError(500)
+        assert "oauth_nonce" in self.request.arguments
+        assert "oauth_timestamp" in self.request.arguments
+        assert "oauth_signature" in self.request.arguments
+        assert self.get_argument("oauth_consumer_key") == "test_twitter_consumer_key"
+        assert self.get_argument("oauth_signature_method") == "HMAC-SHA1"
+        assert self.get_argument("oauth_version") == "1.0"
+        assert self.get_argument("oauth_token") == "hjkl"
+        self.write(dict(screen_name=screen_name, name=screen_name.capitalize()))
+
+
+class TwitterServerVerifyCredentialsHandler(RequestHandler):
+    def get(self):
+        assert "oauth_nonce" in self.request.arguments
+        assert "oauth_timestamp" in self.request.arguments
+        assert "oauth_signature" in self.request.arguments
+        assert self.get_argument("oauth_consumer_key") == "test_twitter_consumer_key"
+        assert self.get_argument("oauth_signature_method") == "HMAC-SHA1"
+        assert self.get_argument("oauth_version") == "1.0"
+        assert self.get_argument("oauth_token") == "hjkl"
+        self.write(dict(screen_name="foo", name="Foo"))
+
+
+class AuthTest(AsyncHTTPTestCase):
+    def get_app(self):
+        return Application(
+            [
+                # test endpoints
+                ("/openid/client/login", OpenIdClientLoginHandler, dict(test=self)),
+                (
+                    "/oauth10/client/login",
+                    OAuth1ClientLoginHandler,
+                    dict(test=self, version="1.0"),
+                ),
+                (
+                    "/oauth10/client/request_params",
+                    OAuth1ClientRequestParametersHandler,
+                    dict(version="1.0"),
+                ),
+                (
+                    "/oauth10a/client/login",
+                    OAuth1ClientLoginHandler,
+                    dict(test=self, version="1.0a"),
+                ),
+                (
+                    "/oauth10a/client/login_coroutine",
+                    OAuth1ClientLoginCoroutineHandler,
+                    dict(test=self, version="1.0a"),
+                ),
+                (
+                    "/oauth10a/client/request_params",
+                    OAuth1ClientRequestParametersHandler,
+                    dict(version="1.0a"),
+                ),
+                ("/oauth2/client/login", OAuth2ClientLoginHandler, dict(test=self)),
+                ("/facebook/client/login", FacebookClientLoginHandler, dict(test=self)),
+                ("/twitter/client/login", TwitterClientLoginHandler, dict(test=self)),
+                (
+                    "/twitter/client/authenticate",
+                    TwitterClientAuthenticateHandler,
+                    dict(test=self),
+                ),
+                (
+                    "/twitter/client/login_gen_coroutine",
+                    TwitterClientLoginGenCoroutineHandler,
+                    dict(test=self),
+                ),
+                (
+                    "/twitter/client/show_user",
+                    TwitterClientShowUserHandler,
+                    dict(test=self),
+                ),
+                # simulated servers
+                ("/openid/server/authenticate", OpenIdServerAuthenticateHandler),
+                ("/oauth1/server/request_token", OAuth1ServerRequestTokenHandler),
+                ("/oauth1/server/access_token", OAuth1ServerAccessTokenHandler),
+                ("/facebook/server/access_token", FacebookServerAccessTokenHandler),
+                ("/facebook/server/me", FacebookServerMeHandler),
+                ("/twitter/server/access_token", TwitterServerAccessTokenHandler),
+                (r"/twitter/api/users/show/(.*)\.json", TwitterServerShowUserHandler),
+                (
+                    r"/twitter/api/account/verify_credentials\.json",
+                    TwitterServerVerifyCredentialsHandler,
+                ),
+            ],
+            http_client=self.http_client,
+            twitter_consumer_key="test_twitter_consumer_key",
+            twitter_consumer_secret="test_twitter_consumer_secret",
+            facebook_api_key="test_facebook_api_key",
+            facebook_secret="test_facebook_secret",
+        )
+
+    def test_openid_redirect(self):
+        response = self.fetch("/openid/client/login", follow_redirects=False)
+        self.assertEqual(response.code, 302)
+        self.assertTrue("/openid/server/authenticate?" in response.headers["Location"])
+
+    def test_openid_get_user(self):
+        response = self.fetch(
+            "/openid/client/login?openid.mode=blah"
+            "&openid.ns.ax=http://openid.net/srv/ax/1.0"
+            "&openid.ax.type.email=http://axschema.org/contact/email"
+            "&openid.ax.value.email=foo@example.com"
+        )
+        response.rethrow()
+        parsed = json_decode(response.body)
+        self.assertEqual(parsed["email"], "foo@example.com")
+
+    def test_oauth10_redirect(self):
+        response = self.fetch("/oauth10/client/login", follow_redirects=False)
+        self.assertEqual(response.code, 302)
+        self.assertTrue(
+            response.headers["Location"].endswith(
+                "/oauth1/server/authorize?oauth_token=zxcv"
+            )
+        )
+        # the cookie is base64('zxcv')|base64('1234')
+        self.assertTrue(
+            '_oauth_request_token="enhjdg==|MTIzNA=="'
+            in response.headers["Set-Cookie"],
+            response.headers["Set-Cookie"],
+        )
+
+    def test_oauth10_get_user(self):
+        response = self.fetch(
+            "/oauth10/client/login?oauth_token=zxcv",
+            headers={"Cookie": "_oauth_request_token=enhjdg==|MTIzNA=="},
+        )
+        response.rethrow()
+        parsed = json_decode(response.body)
+        self.assertEqual(parsed["email"], "foo@example.com")
+        self.assertEqual(parsed["access_token"], dict(key="uiop", secret="5678"))
+
+    def test_oauth10_request_parameters(self):
+        response = self.fetch("/oauth10/client/request_params")
+        response.rethrow()
+        parsed = json_decode(response.body)
+        self.assertEqual(parsed["oauth_consumer_key"], "asdf")
+        self.assertEqual(parsed["oauth_token"], "uiop")
+        self.assertTrue("oauth_nonce" in parsed)
+        self.assertTrue("oauth_signature" in parsed)
+
+    def test_oauth10a_redirect(self):
+        response = self.fetch("/oauth10a/client/login", follow_redirects=False)
+        self.assertEqual(response.code, 302)
+        self.assertTrue(
+            response.headers["Location"].endswith(
+                "/oauth1/server/authorize?oauth_token=zxcv"
+            )
+        )
+        # the cookie is base64('zxcv')|base64('1234')
+        self.assertTrue(
+            '_oauth_request_token="enhjdg==|MTIzNA=="'
+            in response.headers["Set-Cookie"],
+            response.headers["Set-Cookie"],
+        )
+
+    @unittest.skipIf(mock is None, "mock package not present")
+    def test_oauth10a_redirect_error(self):
+        with mock.patch.object(OAuth1ServerRequestTokenHandler, "get") as get:
+            get.side_effect = Exception("boom")
+            with ExpectLog(app_log, "Uncaught exception"):
+                response = self.fetch("/oauth10a/client/login", follow_redirects=False)
+            self.assertEqual(response.code, 500)
+
+    def test_oauth10a_get_user(self):
+        response = self.fetch(
+            "/oauth10a/client/login?oauth_token=zxcv",
+            headers={"Cookie": "_oauth_request_token=enhjdg==|MTIzNA=="},
+        )
+        response.rethrow()
+        parsed = json_decode(response.body)
+        self.assertEqual(parsed["email"], "foo@example.com")
+        self.assertEqual(parsed["access_token"], dict(key="uiop", secret="5678"))
+
+    def test_oauth10a_request_parameters(self):
+        response = self.fetch("/oauth10a/client/request_params")
+        response.rethrow()
+        parsed = json_decode(response.body)
+        self.assertEqual(parsed["oauth_consumer_key"], "asdf")
+        self.assertEqual(parsed["oauth_token"], "uiop")
+        self.assertTrue("oauth_nonce" in parsed)
+        self.assertTrue("oauth_signature" in parsed)
+
+    def test_oauth10a_get_user_coroutine_exception(self):
+        response = self.fetch(
+            "/oauth10a/client/login_coroutine?oauth_token=zxcv&fail_in_get_user=true",
+            headers={"Cookie": "_oauth_request_token=enhjdg==|MTIzNA=="},
+        )
+        self.assertEqual(response.code, 503)
+
+    def test_oauth2_redirect(self):
+        response = self.fetch("/oauth2/client/login", follow_redirects=False)
+        self.assertEqual(response.code, 302)
+        self.assertTrue("/oauth2/server/authorize?" in response.headers["Location"])
+
+    def test_facebook_login(self):
+        response = self.fetch("/facebook/client/login", follow_redirects=False)
+        self.assertEqual(response.code, 302)
+        self.assertTrue("/facebook/server/authorize?" in response.headers["Location"])
+        response = self.fetch(
+            "/facebook/client/login?code=1234", follow_redirects=False
+        )
+        self.assertEqual(response.code, 200)
+        user = json_decode(response.body)
+        self.assertEqual(user["access_token"], "asdf")
+        self.assertEqual(user["session_expires"], "3600")
+
+    def base_twitter_redirect(self, url):
+        # Same as test_oauth10a_redirect
+        response = self.fetch(url, follow_redirects=False)
+        self.assertEqual(response.code, 302)
+        self.assertTrue(
+            response.headers["Location"].endswith(
+                "/oauth1/server/authorize?oauth_token=zxcv"
+            )
+        )
+        # the cookie is base64('zxcv')|base64('1234')
+        self.assertTrue(
+            '_oauth_request_token="enhjdg==|MTIzNA=="'
+            in response.headers["Set-Cookie"],
+            response.headers["Set-Cookie"],
+        )
+
+    def test_twitter_redirect(self):
+        self.base_twitter_redirect("/twitter/client/login")
+
+    def test_twitter_redirect_gen_coroutine(self):
+        self.base_twitter_redirect("/twitter/client/login_gen_coroutine")
+
+    def test_twitter_authenticate_redirect(self):
+        response = self.fetch("/twitter/client/authenticate", follow_redirects=False)
+        self.assertEqual(response.code, 302)
+        self.assertTrue(
+            response.headers["Location"].endswith(
+                "/twitter/server/authenticate?oauth_token=zxcv"
+            ),
+            response.headers["Location"],
+        )
+        # the cookie is base64('zxcv')|base64('1234')
+        self.assertTrue(
+            '_oauth_request_token="enhjdg==|MTIzNA=="'
+            in response.headers["Set-Cookie"],
+            response.headers["Set-Cookie"],
+        )
+
+    def test_twitter_get_user(self):
+        response = self.fetch(
+            "/twitter/client/login?oauth_token=zxcv",
+            headers={"Cookie": "_oauth_request_token=enhjdg==|MTIzNA=="},
+        )
+        response.rethrow()
+        parsed = json_decode(response.body)
+        self.assertEqual(
+            parsed,
+            {
+                u"access_token": {
+                    u"key": u"hjkl",
+                    u"screen_name": u"foo",
+                    u"secret": u"vbnm",
+                },
+                u"name": u"Foo",
+                u"screen_name": u"foo",
+                u"username": u"foo",
+            },
+        )
+
+    def test_twitter_show_user(self):
+        response = self.fetch("/twitter/client/show_user?name=somebody")
+        response.rethrow()
+        self.assertEqual(
+            json_decode(response.body), {"name": "Somebody", "screen_name": "somebody"}
+        )
+
+    def test_twitter_show_user_error(self):
+        response = self.fetch("/twitter/client/show_user?name=error")
+        self.assertEqual(response.code, 500)
+        self.assertEqual(response.body, b"error from twitter request")
+
+
+class GoogleLoginHandler(RequestHandler, GoogleOAuth2Mixin):
+    def initialize(self, test):
+        self.test = test
+        self._OAUTH_REDIRECT_URI = test.get_url("/client/login")
+        self._OAUTH_AUTHORIZE_URL = test.get_url("/google/oauth2/authorize")
+        self._OAUTH_ACCESS_TOKEN_URL = test.get_url("/google/oauth2/token")
+
+    @gen.coroutine
+    def get(self):
+        code = self.get_argument("code", None)
+        if code is not None:
+            # retrieve authenticate google user
+            access = yield self.get_authenticated_user(self._OAUTH_REDIRECT_URI, code)
+            user = yield self.oauth2_request(
+                self.test.get_url("/google/oauth2/userinfo"),
+                access_token=access["access_token"],
+            )
+            # return the user and access token as json
+            user["access_token"] = access["access_token"]
+            self.write(user)
+        else:
+            self.authorize_redirect(
+                redirect_uri=self._OAUTH_REDIRECT_URI,
+                client_id=self.settings["google_oauth"]["key"],
+                client_secret=self.settings["google_oauth"]["secret"],
+                scope=["profile", "email"],
+                response_type="code",
+                extra_params={"prompt": "select_account"},
+            )
+
+
+class GoogleOAuth2AuthorizeHandler(RequestHandler):
+    def get(self):
+        # issue a fake auth code and redirect to redirect_uri
+        code = "fake-authorization-code"
+        self.redirect(url_concat(self.get_argument("redirect_uri"), dict(code=code)))
+
+
+class GoogleOAuth2TokenHandler(RequestHandler):
+    def post(self):
+        assert self.get_argument("code") == "fake-authorization-code"
+        # issue a fake token
+        self.finish(
+            {"access_token": "fake-access-token", "expires_in": "never-expires"}
+        )
+
+
+class GoogleOAuth2UserinfoHandler(RequestHandler):
+    def get(self):
+        assert self.get_argument("access_token") == "fake-access-token"
+        # return a fake user
+        self.finish({"name": "Foo", "email": "foo@example.com"})
+
+
+class GoogleOAuth2Test(AsyncHTTPTestCase):
+    def get_app(self):
+        return Application(
+            [
+                # test endpoints
+                ("/client/login", GoogleLoginHandler, dict(test=self)),
+                # simulated google authorization server endpoints
+                ("/google/oauth2/authorize", GoogleOAuth2AuthorizeHandler),
+                ("/google/oauth2/token", GoogleOAuth2TokenHandler),
+                ("/google/oauth2/userinfo", GoogleOAuth2UserinfoHandler),
+            ],
+            google_oauth={
+                "key": "fake_google_client_id",
+                "secret": "fake_google_client_secret",
+            },
+        )
+
+    def test_google_login(self):
+        response = self.fetch("/client/login")
+        self.assertDictEqual(
+            {
+                u"name": u"Foo",
+                u"email": u"foo@example.com",
+                u"access_token": u"fake-access-token",
+            },
+            json_decode(response.body),
+        )

.venv/Lib/site-packages/tornado/test/autoreload_test.py

@@ -0,0 +1,127 @@
+import os
+import shutil
+import subprocess
+from subprocess import Popen
+import sys
+from tempfile import mkdtemp
+import time
+import unittest
+
+
+class AutoreloadTest(unittest.TestCase):
+    def setUp(self):
+        self.path = mkdtemp()
+
+    def tearDown(self):
+        try:
+            shutil.rmtree(self.path)
+        except OSError:
+            # Windows disallows deleting files that are in use by
+            # another process, and even though we've waited for our
+            # child process below, it appears that its lock on these
+            # files is not guaranteed to be released by this point.
+            # Sleep and try again (once).
+            time.sleep(1)
+            shutil.rmtree(self.path)
+
+    def test_reload_module(self):
+        main = """\
+import os
+import sys
+
+from tornado import autoreload
+
+# This import will fail if path is not set up correctly
+import testapp
+
+print('Starting')
+if 'TESTAPP_STARTED' not in os.environ:
+    os.environ['TESTAPP_STARTED'] = '1'
+    sys.stdout.flush()
+    autoreload._reload()
+"""
+
+        # Create temporary test application
+        os.mkdir(os.path.join(self.path, "testapp"))
+        open(os.path.join(self.path, "testapp/__init__.py"), "w").close()
+        with open(os.path.join(self.path, "testapp/__main__.py"), "w") as f:
+            f.write(main)
+
+        # Make sure the tornado module under test is available to the test
+        # application
+        pythonpath = os.getcwd()
+        if "PYTHONPATH" in os.environ:
+            pythonpath += os.pathsep + os.environ["PYTHONPATH"]
+
+        p = Popen(
+            [sys.executable, "-m", "testapp"],
+            stdout=subprocess.PIPE,
+            cwd=self.path,
+            env=dict(os.environ, PYTHONPATH=pythonpath),
+            universal_newlines=True,
+        )
+        out = p.communicate()[0]
+        self.assertEqual(out, "Starting\nStarting\n")
+
+    def test_reload_wrapper_preservation(self):
+        # This test verifies that when `python -m tornado.autoreload`
+        # is used on an application that also has an internal
+        # autoreload, the reload wrapper is preserved on restart.
+        main = """\
+import os
+import sys
+
+# This import will fail if path is not set up correctly
+import testapp
+
+if 'tornado.autoreload' not in sys.modules:
+    raise Exception('started without autoreload wrapper')
+
+import tornado.autoreload
+
+print('Starting')
+sys.stdout.flush()
+if 'TESTAPP_STARTED' not in os.environ:
+    os.environ['TESTAPP_STARTED'] = '1'
+    # Simulate an internal autoreload (one not caused
+    # by the wrapper).
+    tornado.autoreload._reload()
+else:
+    # Exit directly so autoreload doesn't catch it.
+    os._exit(0)
+"""
+
+        # Create temporary test application
+        os.mkdir(os.path.join(self.path, "testapp"))
+        init_file = os.path.join(self.path, "testapp", "__init__.py")
+        open(init_file, "w").close()
+        main_file = os.path.join(self.path, "testapp", "__main__.py")
+        with open(main_file, "w") as f:
+            f.write(main)
+
+        # Make sure the tornado module under test is available to the test
+        # application
+        pythonpath = os.getcwd()
+        if "PYTHONPATH" in os.environ:
+            pythonpath += os.pathsep + os.environ["PYTHONPATH"]
+
+        autoreload_proc = Popen(
+            [sys.executable, "-m", "tornado.autoreload", "-m", "testapp"],
+            stdout=subprocess.PIPE,
+            cwd=self.path,
+            env=dict(os.environ, PYTHONPATH=pythonpath),
+            universal_newlines=True,
+        )
+
+        # This timeout needs to be fairly generous for pypy due to jit
+        # warmup costs.
+        for i in range(40):
+            if autoreload_proc.poll() is not None:
+                break
+            time.sleep(0.1)
+        else:
+            autoreload_proc.kill()
+            raise Exception("subprocess failed to terminate")
+
+        out = autoreload_proc.communicate()[0]
+        self.assertEqual(out, "Starting\n" * 2)

.venv/Lib/site-packages/tornado/test/concurrent_test.py

@@ -0,0 +1,212 @@
+#
+# Copyright 2012 Facebook
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+from concurrent import futures
+import logging
+import re
+import socket
+import typing
+import unittest
+
+from tornado.concurrent import (
+    Future,
+    run_on_executor,
+    future_set_result_unless_cancelled,
+)
+from tornado.escape import utf8, to_unicode
+from tornado import gen
+from tornado.iostream import IOStream
+from tornado.tcpserver import TCPServer
+from tornado.testing import AsyncTestCase, bind_unused_port, gen_test
+
+
+class MiscFutureTest(AsyncTestCase):
+    def test_future_set_result_unless_cancelled(self):
+        fut = Future()  # type: Future[int]
+        future_set_result_unless_cancelled(fut, 42)
+        self.assertEqual(fut.result(), 42)
+        self.assertFalse(fut.cancelled())
+
+        fut = Future()
+        fut.cancel()
+        is_cancelled = fut.cancelled()
+        future_set_result_unless_cancelled(fut, 42)
+        self.assertEqual(fut.cancelled(), is_cancelled)
+        if not is_cancelled:
+            self.assertEqual(fut.result(), 42)
+
+
+# The following series of classes demonstrate and test various styles
+# of use, with and without generators and futures.
+
+
+class CapServer(TCPServer):
+    @gen.coroutine
+    def handle_stream(self, stream, address):
+        data = yield stream.read_until(b"\n")
+        data = to_unicode(data)
+        if data == data.upper():
+            stream.write(b"error\talready capitalized\n")
+        else:
+            # data already has \n
+            stream.write(utf8("ok\t%s" % data.upper()))
+        stream.close()
+
+
+class CapError(Exception):
+    pass
+
+
+class BaseCapClient(object):
+    def __init__(self, port):
+        self.port = port
+
+    def process_response(self, data):
+        m = re.match("(.*)\t(.*)\n", to_unicode(data))
+        if m is None:
+            raise Exception("did not match")
+        status, message = m.groups()
+        if status == "ok":
+            return message
+        else:
+            raise CapError(message)
+
+
+class GeneratorCapClient(BaseCapClient):
+    @gen.coroutine
+    def capitalize(self, request_data):
+        logging.debug("capitalize")
+        stream = IOStream(socket.socket())
+        logging.debug("connecting")
+        yield stream.connect(("127.0.0.1", self.port))
+        stream.write(utf8(request_data + "\n"))
+        logging.debug("reading")
+        data = yield stream.read_until(b"\n")
+        logging.debug("returning")
+        stream.close()
+        raise gen.Return(self.process_response(data))
+
+
+class ClientTestMixin(object):
+    client_class = None  # type: typing.Callable
+
+    def setUp(self):
+        super().setUp()  # type: ignore
+        self.server = CapServer()
+        sock, port = bind_unused_port()
+        self.server.add_sockets([sock])
+        self.client = self.client_class(port=port)
+
+    def tearDown(self):
+        self.server.stop()
+        super().tearDown()  # type: ignore
+
+    def test_future(self: typing.Any):
+        future = self.client.capitalize("hello")
+        self.io_loop.add_future(future, self.stop)
+        self.wait()
+        self.assertEqual(future.result(), "HELLO")
+
+    def test_future_error(self: typing.Any):
+        future = self.client.capitalize("HELLO")
+        self.io_loop.add_future(future, self.stop)
+        self.wait()
+        self.assertRaisesRegexp(CapError, "already capitalized", future.result)  # type: ignore
+
+    def test_generator(self: typing.Any):
+        @gen.coroutine
+        def f():
+            result = yield self.client.capitalize("hello")
+            self.assertEqual(result, "HELLO")
+
+        self.io_loop.run_sync(f)
+
+    def test_generator_error(self: typing.Any):
+        @gen.coroutine
+        def f():
+            with self.assertRaisesRegexp(CapError, "already capitalized"):
+                yield self.client.capitalize("HELLO")
+
+        self.io_loop.run_sync(f)
+
+
+class GeneratorClientTest(ClientTestMixin, AsyncTestCase):
+    client_class = GeneratorCapClient
+
+
+class RunOnExecutorTest(AsyncTestCase):
+    @gen_test
+    def test_no_calling(self):
+        class Object(object):
+            def __init__(self):
+                self.executor = futures.thread.ThreadPoolExecutor(1)
+
+            @run_on_executor
+            def f(self):
+                return 42
+
+        o = Object()
+        answer = yield o.f()
+        self.assertEqual(answer, 42)
+
+    @gen_test
+    def test_call_with_no_args(self):
+        class Object(object):
+            def __init__(self):
+                self.executor = futures.thread.ThreadPoolExecutor(1)
+
+            @run_on_executor()
+            def f(self):
+                return 42
+
+        o = Object()
+        answer = yield o.f()
+        self.assertEqual(answer, 42)
+
+    @gen_test
+    def test_call_with_executor(self):
+        class Object(object):
+            def __init__(self):
+                self.__executor = futures.thread.ThreadPoolExecutor(1)
+
+            @run_on_executor(executor="_Object__executor")
+            def f(self):
+                return 42
+
+        o = Object()
+        answer = yield o.f()
+        self.assertEqual(answer, 42)
+
+    @gen_test
+    def test_async_await(self):
+        class Object(object):
+            def __init__(self):
+                self.executor = futures.thread.ThreadPoolExecutor(1)
+
+            @run_on_executor()
+            def f(self):
+                return 42
+
+        o = Object()
+
+        async def f():
+            answer = await o.f()
+            return answer
+
+        result = yield f()
+        self.assertEqual(result, 42)
+
+
+if __name__ == "__main__":
+    unittest.main()

.venv/Lib/site-packages/tornado/test/csv_translations/fr_FR.csv

@@ -0,0 +1 @@
+"school","école"

.venv/Lib/site-packages/tornado/test/curl_httpclient_test.py

@@ -0,0 +1,129 @@
+from hashlib import md5
+import unittest
+
+from tornado.escape import utf8
+from tornado.testing import AsyncHTTPTestCase
+from tornado.test import httpclient_test
+from tornado.web import Application, RequestHandler
+
+
+try:
+    import pycurl
+except ImportError:
+    pycurl = None  # type: ignore
+
+if pycurl is not None:
+    from tornado.curl_httpclient import CurlAsyncHTTPClient
+
+
+@unittest.skipIf(pycurl is None, "pycurl module not present")
+class CurlHTTPClientCommonTestCase(httpclient_test.HTTPClientCommonTestCase):
+    def get_http_client(self):
+        client = CurlAsyncHTTPClient(defaults=dict(allow_ipv6=False))
+        # make sure AsyncHTTPClient magic doesn't give us the wrong class
+        self.assertTrue(isinstance(client, CurlAsyncHTTPClient))
+        return client
+
+
+class DigestAuthHandler(RequestHandler):
+    def initialize(self, username, password):
+        self.username = username
+        self.password = password
+
+    def get(self):
+        realm = "test"
+        opaque = "asdf"
+        # Real implementations would use a random nonce.
+        nonce = "1234"
+
+        auth_header = self.request.headers.get("Authorization", None)
+        if auth_header is not None:
+            auth_mode, params = auth_header.split(" ", 1)
+            assert auth_mode == "Digest"
+            param_dict = {}
+            for pair in params.split(","):
+                k, v = pair.strip().split("=", 1)
+                if v[0] == '"' and v[-1] == '"':
+                    v = v[1:-1]
+                param_dict[k] = v
+            assert param_dict["realm"] == realm
+            assert param_dict["opaque"] == opaque
+            assert param_dict["nonce"] == nonce
+            assert param_dict["username"] == self.username
+            assert param_dict["uri"] == self.request.path
+            h1 = md5(
+                utf8("%s:%s:%s" % (self.username, realm, self.password))
+            ).hexdigest()
+            h2 = md5(
+                utf8("%s:%s" % (self.request.method, self.request.path))
+            ).hexdigest()
+            digest = md5(utf8("%s:%s:%s" % (h1, nonce, h2))).hexdigest()
+            if digest == param_dict["response"]:
+                self.write("ok")
+            else:
+                self.write("fail")
+        else:
+            self.set_status(401)
+            self.set_header(
+                "WWW-Authenticate",
+                'Digest realm="%s", nonce="%s", opaque="%s"' % (realm, nonce, opaque),
+            )
+
+
+class CustomReasonHandler(RequestHandler):
+    def get(self):
+        self.set_status(200, "Custom reason")
+
+
+class CustomFailReasonHandler(RequestHandler):
+    def get(self):
+        self.set_status(400, "Custom reason")
+
+
+@unittest.skipIf(pycurl is None, "pycurl module not present")
+class CurlHTTPClientTestCase(AsyncHTTPTestCase):
+    def setUp(self):
+        super().setUp()
+        self.http_client = self.create_client()
+
+    def get_app(self):
+        return Application(
+            [
+                ("/digest", DigestAuthHandler, {"username": "foo", "password": "bar"}),
+                (
+                    "/digest_non_ascii",
+                    DigestAuthHandler,
+                    {"username": "foo", "password": "barユ£"},
+                ),
+                ("/custom_reason", CustomReasonHandler),
+                ("/custom_fail_reason", CustomFailReasonHandler),
+            ]
+        )
+
+    def create_client(self, **kwargs):
+        return CurlAsyncHTTPClient(
+            force_instance=True, defaults=dict(allow_ipv6=False), **kwargs
+        )
+
+    def test_digest_auth(self):
+        response = self.fetch(
+            "/digest", auth_mode="digest", auth_username="foo", auth_password="bar"
+        )
+        self.assertEqual(response.body, b"ok")
+
+    def test_custom_reason(self):
+        response = self.fetch("/custom_reason")
+        self.assertEqual(response.reason, "Custom reason")
+
+    def test_fail_custom_reason(self):
+        response = self.fetch("/custom_fail_reason")
+        self.assertEqual(str(response.error), "HTTP 400: Custom reason")
+
+    def test_digest_auth_non_ascii(self):
+        response = self.fetch(
+            "/digest_non_ascii",
+            auth_mode="digest",
+            auth_username="foo",
+            auth_password="barユ£",
+        )
+        self.assertEqual(response.body, b"ok")

.venv/Lib/site-packages/tornado/test/escape_test.py

@@ -0,0 +1,322 @@
+import unittest
+
+import tornado.escape
+from tornado.escape import (
+    utf8,
+    xhtml_escape,
+    xhtml_unescape,
+    url_escape,
+    url_unescape,
+    to_unicode,
+    json_decode,
+    json_encode,
+    squeeze,
+    recursive_unicode,
+)
+from tornado.util import unicode_type
+
+from typing import List, Tuple, Union, Dict, Any  # noqa: F401
+
+linkify_tests = [
+    # (input, linkify_kwargs, expected_output)
+    (
+        "hello http://world.com/!",
+        {},
+        u'hello <a href="http://world.com/">http://world.com/</a>!',
+    ),
+    (
+        "hello http://world.com/with?param=true&stuff=yes",
+        {},
+        u'hello <a href="http://world.com/with?param=true&amp;stuff=yes">http://world.com/with?param=true&amp;stuff=yes</a>',  # noqa: E501
+    ),
+    # an opened paren followed by many chars killed Gruber's regex
+    (
+        "http://url.com/w(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
+        {},
+        u'<a href="http://url.com/w">http://url.com/w</a>(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',  # noqa: E501
+    ),
+    # as did too many dots at the end
+    (
+        "http://url.com/withmany.......................................",
+        {},
+        u'<a href="http://url.com/withmany">http://url.com/withmany</a>.......................................',  # noqa: E501
+    ),
+    (
+        "http://url.com/withmany((((((((((((((((((((((((((((((((((a)",
+        {},
+        u'<a href="http://url.com/withmany">http://url.com/withmany</a>((((((((((((((((((((((((((((((((((a)',  # noqa: E501
+    ),
+    # some examples from http://daringfireball.net/2009/11/liberal_regex_for_matching_urls
+    # plus a fex extras (such as multiple parentheses).
+    (
+        "http://foo.com/blah_blah",
+        {},
+        u'<a href="http://foo.com/blah_blah">http://foo.com/blah_blah</a>',
+    ),
+    (
+        "http://foo.com/blah_blah/",
+        {},
+        u'<a href="http://foo.com/blah_blah/">http://foo.com/blah_blah/</a>',
+    ),
+    (
+        "(Something like http://foo.com/blah_blah)",
+        {},
+        u'(Something like <a href="http://foo.com/blah_blah">http://foo.com/blah_blah</a>)',
+    ),
+    (
+        "http://foo.com/blah_blah_(wikipedia)",
+        {},
+        u'<a href="http://foo.com/blah_blah_(wikipedia)">http://foo.com/blah_blah_(wikipedia)</a>',
+    ),
+    (
+        "http://foo.com/blah_(blah)_(wikipedia)_blah",
+        {},
+        u'<a href="http://foo.com/blah_(blah)_(wikipedia)_blah">http://foo.com/blah_(blah)_(wikipedia)_blah</a>',  # noqa: E501
+    ),
+    (
+        "(Something like http://foo.com/blah_blah_(wikipedia))",
+        {},
+        u'(Something like <a href="http://foo.com/blah_blah_(wikipedia)">http://foo.com/blah_blah_(wikipedia)</a>)',  # noqa: E501
+    ),
+    (
+        "http://foo.com/blah_blah.",
+        {},
+        u'<a href="http://foo.com/blah_blah">http://foo.com/blah_blah</a>.',
+    ),
+    (
+        "http://foo.com/blah_blah/.",
+        {},
+        u'<a href="http://foo.com/blah_blah/">http://foo.com/blah_blah/</a>.',
+    ),
+    (
+        "<http://foo.com/blah_blah>",
+        {},
+        u'&lt;<a href="http://foo.com/blah_blah">http://foo.com/blah_blah</a>&gt;',
+    ),
+    (
+        "<http://foo.com/blah_blah/>",
+        {},
+        u'&lt;<a href="http://foo.com/blah_blah/">http://foo.com/blah_blah/</a>&gt;',
+    ),
+    (
+        "http://foo.com/blah_blah,",
+        {},
+        u'<a href="http://foo.com/blah_blah">http://foo.com/blah_blah</a>,',
+    ),
+    (
+        "http://www.example.com/wpstyle/?p=364.",
+        {},
+        u'<a href="http://www.example.com/wpstyle/?p=364">http://www.example.com/wpstyle/?p=364</a>.',  # noqa: E501
+    ),
+    (
+        "rdar://1234",
+        {"permitted_protocols": ["http", "rdar"]},
+        u'<a href="rdar://1234">rdar://1234</a>',
+    ),
+    (
+        "rdar:/1234",
+        {"permitted_protocols": ["rdar"]},
+        u'<a href="rdar:/1234">rdar:/1234</a>',
+    ),
+    (
+        "http://userid:password@example.com:8080",
+        {},
+        u'<a href="http://userid:password@example.com:8080">http://userid:password@example.com:8080</a>',  # noqa: E501
+    ),
+    (
+        "http://userid@example.com",
+        {},
+        u'<a href="http://userid@example.com">http://userid@example.com</a>',
+    ),
+    (
+        "http://userid@example.com:8080",
+        {},
+        u'<a href="http://userid@example.com:8080">http://userid@example.com:8080</a>',
+    ),
+    (
+        "http://userid:password@example.com",
+        {},
+        u'<a href="http://userid:password@example.com">http://userid:password@example.com</a>',
+    ),
+    (
+        "message://%3c330e7f8409726r6a4ba78dkf1fd71420c1bf6ff@mail.gmail.com%3e",
+        {"permitted_protocols": ["http", "message"]},
+        u'<a href="message://%3c330e7f8409726r6a4ba78dkf1fd71420c1bf6ff@mail.gmail.com%3e">'
+        u"message://%3c330e7f8409726r6a4ba78dkf1fd71420c1bf6ff@mail.gmail.com%3e</a>",
+    ),
+    (
+        u"http://\u27a1.ws/\u4a39",
+        {},
+        u'<a href="http://\u27a1.ws/\u4a39">http://\u27a1.ws/\u4a39</a>',
+    ),
+    (
+        "<tag>http://example.com</tag>",
+        {},
+        u'&lt;tag&gt;<a href="http://example.com">http://example.com</a>&lt;/tag&gt;',
+    ),
+    (
+        "Just a www.example.com link.",
+        {},
+        u'Just a <a href="http://www.example.com">www.example.com</a> link.',
+    ),
+    (
+        "Just a www.example.com link.",
+        {"require_protocol": True},
+        u"Just a www.example.com link.",
+    ),
+    (
+        "A http://reallylong.com/link/that/exceedsthelenglimit.html",
+        {"require_protocol": True, "shorten": True},
+        u'A <a href="http://reallylong.com/link/that/exceedsthelenglimit.html"'
+        u' title="http://reallylong.com/link/that/exceedsthelenglimit.html">http://reallylong.com/link...</a>',  # noqa: E501
+    ),
+    (
+        "A http://reallylongdomainnamethatwillbetoolong.com/hi!",
+        {"shorten": True},
+        u'A <a href="http://reallylongdomainnamethatwillbetoolong.com/hi"'
+        u' title="http://reallylongdomainnamethatwillbetoolong.com/hi">http://reallylongdomainnametha...</a>!',  # noqa: E501
+    ),
+    (
+        "A file:///passwords.txt and http://web.com link",
+        {},
+        u'A file:///passwords.txt and <a href="http://web.com">http://web.com</a> link',
+    ),
+    (
+        "A file:///passwords.txt and http://web.com link",
+        {"permitted_protocols": ["file"]},
+        u'A <a href="file:///passwords.txt">file:///passwords.txt</a> and http://web.com link',
+    ),
+    (
+        "www.external-link.com",
+        {"extra_params": 'rel="nofollow" class="external"'},
+        u'<a href="http://www.external-link.com" rel="nofollow" class="external">www.external-link.com</a>',  # noqa: E501
+    ),
+    (
+        "www.external-link.com and www.internal-link.com/blogs extra",
+        {
+            "extra_params": lambda href: 'class="internal"'
+            if href.startswith("http://www.internal-link.com")
+            else 'rel="nofollow" class="external"'
+        },
+        u'<a href="http://www.external-link.com" rel="nofollow" class="external">www.external-link.com</a>'  # noqa: E501
+        u' and <a href="http://www.internal-link.com/blogs" class="internal">www.internal-link.com/blogs</a> extra',  # noqa: E501
+    ),
+    (
+        "www.external-link.com",
+        {"extra_params": lambda href: '    rel="nofollow" class="external"  '},
+        u'<a href="http://www.external-link.com" rel="nofollow" class="external">www.external-link.com</a>',  # noqa: E501
+    ),
+]  # type: List[Tuple[Union[str, bytes], Dict[str, Any], str]]
+
+
+class EscapeTestCase(unittest.TestCase):
+    def test_linkify(self):
+        for text, kwargs, html in linkify_tests:
+            linked = tornado.escape.linkify(text, **kwargs)
+            self.assertEqual(linked, html)
+
+    def test_xhtml_escape(self):
+        tests = [
+            ("<foo>", "&lt;foo&gt;"),
+            (u"<foo>", u"&lt;foo&gt;"),
+            (b"<foo>", b"&lt;foo&gt;"),
+            ("<>&\"'", "&lt;&gt;&amp;&quot;&#39;"),
+            ("&amp;", "&amp;amp;"),
+            (u"<\u00e9>", u"&lt;\u00e9&gt;"),
+            (b"<\xc3\xa9>", b"&lt;\xc3\xa9&gt;"),
+        ]  # type: List[Tuple[Union[str, bytes], Union[str, bytes]]]
+        for unescaped, escaped in tests:
+            self.assertEqual(utf8(xhtml_escape(unescaped)), utf8(escaped))
+            self.assertEqual(utf8(unescaped), utf8(xhtml_unescape(escaped)))
+
+    def test_xhtml_unescape_numeric(self):
+        tests = [
+            ("foo&#32;bar", "foo bar"),
+            ("foo&#x20;bar", "foo bar"),
+            ("foo&#X20;bar", "foo bar"),
+            ("foo&#xabc;bar", u"foo\u0abcbar"),
+            ("foo&#xyz;bar", "foo&#xyz;bar"),  # invalid encoding
+            ("foo&#;bar", "foo&#;bar"),  # invalid encoding
+            ("foo&#x;bar", "foo&#x;bar"),  # invalid encoding
+        ]
+        for escaped, unescaped in tests:
+            self.assertEqual(unescaped, xhtml_unescape(escaped))
+
+    def test_url_escape_unicode(self):
+        tests = [
+            # byte strings are passed through as-is
+            (u"\u00e9".encode("utf8"), "%C3%A9"),
+            (u"\u00e9".encode("latin1"), "%E9"),
+            # unicode strings become utf8
+            (u"\u00e9", "%C3%A9"),
+        ]  # type: List[Tuple[Union[str, bytes], str]]
+        for unescaped, escaped in tests:
+            self.assertEqual(url_escape(unescaped), escaped)
+
+    def test_url_unescape_unicode(self):
+        tests = [
+            ("%C3%A9", u"\u00e9", "utf8"),
+            ("%C3%A9", u"\u00c3\u00a9", "latin1"),
+            ("%C3%A9", utf8(u"\u00e9"), None),
+        ]
+        for escaped, unescaped, encoding in tests:
+            # input strings to url_unescape should only contain ascii
+            # characters, but make sure the function accepts both byte
+            # and unicode strings.
+            self.assertEqual(url_unescape(to_unicode(escaped), encoding), unescaped)
+            self.assertEqual(url_unescape(utf8(escaped), encoding), unescaped)
+
+    def test_url_escape_quote_plus(self):
+        unescaped = "+ #%"
+        plus_escaped = "%2B+%23%25"
+        escaped = "%2B%20%23%25"
+        self.assertEqual(url_escape(unescaped), plus_escaped)
+        self.assertEqual(url_escape(unescaped, plus=False), escaped)
+        self.assertEqual(url_unescape(plus_escaped), unescaped)
+        self.assertEqual(url_unescape(escaped, plus=False), unescaped)
+        self.assertEqual(url_unescape(plus_escaped, encoding=None), utf8(unescaped))
+        self.assertEqual(
+            url_unescape(escaped, encoding=None, plus=False), utf8(unescaped)
+        )
+
+    def test_escape_return_types(self):
+        # On python2 the escape methods should generally return the same
+        # type as their argument
+        self.assertEqual(type(xhtml_escape("foo")), str)
+        self.assertEqual(type(xhtml_escape(u"foo")), unicode_type)
+
+    def test_json_decode(self):
+        # json_decode accepts both bytes and unicode, but strings it returns
+        # are always unicode.
+        self.assertEqual(json_decode(b'"foo"'), u"foo")
+        self.assertEqual(json_decode(u'"foo"'), u"foo")
+
+        # Non-ascii bytes are interpreted as utf8
+        self.assertEqual(json_decode(utf8(u'"\u00e9"')), u"\u00e9")
+
+    def test_json_encode(self):
+        # json deals with strings, not bytes.  On python 2 byte strings will
+        # convert automatically if they are utf8; on python 3 byte strings
+        # are not allowed.
+        self.assertEqual(json_decode(json_encode(u"\u00e9")), u"\u00e9")
+        if bytes is str:
+            self.assertEqual(json_decode(json_encode(utf8(u"\u00e9"))), u"\u00e9")
+            self.assertRaises(UnicodeDecodeError, json_encode, b"\xe9")
+
+    def test_squeeze(self):
+        self.assertEqual(
+            squeeze(u"sequences     of    whitespace   chars"),
+            u"sequences of whitespace chars",
+        )
+
+    def test_recursive_unicode(self):
+        tests = {
+            "dict": {b"foo": b"bar"},
+            "list": [b"foo", b"bar"],
+            "tuple": (b"foo", b"bar"),
+            "bytes": b"foo",
+        }
+        self.assertEqual(recursive_unicode(tests["dict"]), {u"foo": u"bar"})
+        self.assertEqual(recursive_unicode(tests["list"]), [u"foo", u"bar"])
+        self.assertEqual(recursive_unicode(tests["tuple"]), (u"foo", u"bar"))
+        self.assertEqual(recursive_unicode(tests["bytes"]), u"foo")

.venv/Lib/site-packages/tornado/test/gettext_translations/fr_FR/LC_MESSAGES/tornado_test.po

@@ -0,0 +1,47 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2015-01-27 11:05+0300\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n > 1);\n"
+
+#: extract_me.py:11
+msgid "school"
+msgstr "école"
+
+#: extract_me.py:12
+msgctxt "law"
+msgid "right"
+msgstr "le droit"
+
+#: extract_me.py:13
+msgctxt "good"
+msgid "right"
+msgstr "le bien"
+
+#: extract_me.py:14
+msgctxt "organization"
+msgid "club"
+msgid_plural "clubs"
+msgstr[0] "le club"
+msgstr[1] "les clubs"
+
+#: extract_me.py:15
+msgctxt "stick"
+msgid "club"
+msgid_plural "clubs"
+msgstr[0] "le bâton"
+msgstr[1] "les bâtons"

.venv/Lib/site-packages/tornado/test/http1connection_test.py

@@ -0,0 +1,61 @@
+import socket
+import typing
+
+from tornado.http1connection import HTTP1Connection
+from tornado.httputil import HTTPMessageDelegate
+from tornado.iostream import IOStream
+from tornado.locks import Event
+from tornado.netutil import add_accept_handler
+from tornado.testing import AsyncTestCase, bind_unused_port, gen_test
+
+
+class HTTP1ConnectionTest(AsyncTestCase):
+    code = None  # type: typing.Optional[int]
+
+    def setUp(self):
+        super().setUp()
+        self.asyncSetUp()
+
+    @gen_test
+    def asyncSetUp(self):
+        listener, port = bind_unused_port()
+        event = Event()
+
+        def accept_callback(conn, addr):
+            self.server_stream = IOStream(conn)
+            self.addCleanup(self.server_stream.close)
+            event.set()
+
+        add_accept_handler(listener, accept_callback)
+        self.client_stream = IOStream(socket.socket())
+        self.addCleanup(self.client_stream.close)
+        yield [self.client_stream.connect(("127.0.0.1", port)), event.wait()]
+        self.io_loop.remove_handler(listener)
+        listener.close()
+
+    @gen_test
+    def test_http10_no_content_length(self):
+        # Regression test for a bug in which can_keep_alive would crash
+        # for an HTTP/1.0 (not 1.1) response with no content-length.
+        conn = HTTP1Connection(self.client_stream, True)
+        self.server_stream.write(b"HTTP/1.0 200 Not Modified\r\n\r\nhello")
+        self.server_stream.close()
+
+        event = Event()
+        test = self
+        body = []
+
+        class Delegate(HTTPMessageDelegate):
+            def headers_received(self, start_line, headers):
+                test.code = start_line.code
+
+            def data_received(self, data):
+                body.append(data)
+
+            def finish(self):
+                event.set()
+
+        yield conn.read_response(Delegate())
+        yield event.wait()
+        self.assertEqual(self.code, 200)
+        self.assertEqual(b"".join(body), b"hello")

.venv/Lib/site-packages/tornado/test/httpclient_test.py

@@ -0,0 +1,898 @@
+import base64
+import binascii
+from contextlib import closing
+import copy
+import gzip
+import threading
+import datetime
+from io import BytesIO
+import subprocess
+import sys
+import time
+import typing  # noqa: F401
+import unicodedata
+import unittest
+
+from tornado.escape import utf8, native_str, to_unicode
+from tornado import gen
+from tornado.httpclient import (
+    HTTPRequest,
+    HTTPResponse,
+    _RequestProxy,
+    HTTPError,
+    HTTPClient,
+)
+from tornado.httpserver import HTTPServer
+from tornado.ioloop import IOLoop
+from tornado.iostream import IOStream
+from tornado.log import gen_log, app_log
+from tornado import netutil
+from tornado.testing import AsyncHTTPTestCase, bind_unused_port, gen_test, ExpectLog
+from tornado.test.util import skipOnTravis
+from tornado.web import Application, RequestHandler, url
+from tornado.httputil import format_timestamp, HTTPHeaders
+
+
+class HelloWorldHandler(RequestHandler):
+    def get(self):
+        name = self.get_argument("name", "world")
+        self.set_header("Content-Type", "text/plain")
+        self.finish("Hello %s!" % name)
+
+
+class PostHandler(RequestHandler):
+    def post(self):
+        self.finish(
+            "Post arg1: %s, arg2: %s"
+            % (self.get_argument("arg1"), self.get_argument("arg2"))
+        )
+
+
+class PutHandler(RequestHandler):
+    def put(self):
+        self.write("Put body: ")
+        self.write(self.request.body)
+
+
+class RedirectHandler(RequestHandler):
+    def prepare(self):
+        self.write("redirects can have bodies too")
+        self.redirect(
+            self.get_argument("url"), status=int(self.get_argument("status", "302"))
+        )
+
+
+class RedirectWithoutLocationHandler(RequestHandler):
+    def prepare(self):
+        # For testing error handling of a redirect with no location header.
+        self.set_status(301)
+        self.finish()
+
+
+class ChunkHandler(RequestHandler):
+    @gen.coroutine
+    def get(self):
+        self.write("asdf")
+        self.flush()
+        # Wait a bit to ensure the chunks are sent and received separately.
+        yield gen.sleep(0.01)
+        self.write("qwer")
+
+
+class AuthHandler(RequestHandler):
+    def get(self):
+        self.finish(self.request.headers["Authorization"])
+
+
+class CountdownHandler(RequestHandler):
+    def get(self, count):
+        count = int(count)
+        if count > 0:
+            self.redirect(self.reverse_url("countdown", count - 1))
+        else:
+            self.write("Zero")
+
+
+class EchoPostHandler(RequestHandler):
+    def post(self):
+        self.write(self.request.body)
+
+
+class UserAgentHandler(RequestHandler):
+    def get(self):
+        self.write(self.request.headers.get("User-Agent", "User agent not set"))
+
+
+class ContentLength304Handler(RequestHandler):
+    def get(self):
+        self.set_status(304)
+        self.set_header("Content-Length", 42)
+
+    def _clear_representation_headers(self):
+        # Tornado strips content-length from 304 responses, but here we
+        # want to simulate servers that include the headers anyway.
+        pass
+
+
+class PatchHandler(RequestHandler):
+    def patch(self):
+        "Return the request payload - so we can check it is being kept"
+        self.write(self.request.body)
+
+
+class AllMethodsHandler(RequestHandler):
+    SUPPORTED_METHODS = RequestHandler.SUPPORTED_METHODS + ("OTHER",)  # type: ignore
+
+    def method(self):
+        assert self.request.method is not None
+        self.write(self.request.method)
+
+    get = head = post = put = delete = options = patch = other = method  # type: ignore
+
+
+class SetHeaderHandler(RequestHandler):
+    def get(self):
+        # Use get_arguments for keys to get strings, but
+        # request.arguments for values to get bytes.
+        for k, v in zip(self.get_arguments("k"), self.request.arguments["v"]):
+            self.set_header(k, v)
+
+
+class InvalidGzipHandler(RequestHandler):
+    def get(self):
+        # set Content-Encoding manually to avoid automatic gzip encoding
+        self.set_header("Content-Type", "text/plain")
+        self.set_header("Content-Encoding", "gzip")
+        # Triggering the potential bug seems to depend on input length.
+        # This length is taken from the bad-response example reported in
+        # https://github.com/tornadoweb/tornado/pull/2875 (uncompressed).
+        body = "".join("Hello World {}\n".format(i) for i in range(9000))[:149051]
+        body = gzip.compress(body.encode(), compresslevel=6) + b"\00"
+        self.write(body)
+
+
+# These tests end up getting run redundantly: once here with the default
+# HTTPClient implementation, and then again in each implementation's own
+# test suite.
+
+
+class HTTPClientCommonTestCase(AsyncHTTPTestCase):
+    def get_app(self):
+        return Application(
+            [
+                url("/hello", HelloWorldHandler),
+                url("/post", PostHandler),
+                url("/put", PutHandler),
+                url("/redirect", RedirectHandler),
+                url("/redirect_without_location", RedirectWithoutLocationHandler),
+                url("/chunk", ChunkHandler),
+                url("/auth", AuthHandler),
+                url("/countdown/([0-9]+)", CountdownHandler, name="countdown"),
+                url("/echopost", EchoPostHandler),
+                url("/user_agent", UserAgentHandler),
+                url("/304_with_content_length", ContentLength304Handler),
+                url("/all_methods", AllMethodsHandler),
+                url("/patch", PatchHandler),
+                url("/set_header", SetHeaderHandler),
+                url("/invalid_gzip", InvalidGzipHandler),
+            ],
+            gzip=True,
+        )
+
+    def test_patch_receives_payload(self):
+        body = b"some patch data"
+        response = self.fetch("/patch", method="PATCH", body=body)
+        self.assertEqual(response.code, 200)
+        self.assertEqual(response.body, body)
+
+    @skipOnTravis
+    def test_hello_world(self):
+        response = self.fetch("/hello")
+        self.assertEqual(response.code, 200)
+        self.assertEqual(response.headers["Content-Type"], "text/plain")
+        self.assertEqual(response.body, b"Hello world!")
+        assert response.request_time is not None
+        self.assertEqual(int(response.request_time), 0)
+
+        response = self.fetch("/hello?name=Ben")
+        self.assertEqual(response.body, b"Hello Ben!")
+
+    def test_streaming_callback(self):
+        # streaming_callback is also tested in test_chunked
+        chunks = []  # type: typing.List[bytes]
+        response = self.fetch("/hello", streaming_callback=chunks.append)
+        # with streaming_callback, data goes to the callback and not response.body
+        self.assertEqual(chunks, [b"Hello world!"])
+        self.assertFalse(response.body)
+
+    def test_post(self):
+        response = self.fetch("/post", method="POST", body="arg1=foo&arg2=bar")
+        self.assertEqual(response.code, 200)
+        self.assertEqual(response.body, b"Post arg1: foo, arg2: bar")
+
+    def test_chunked(self):
+        response = self.fetch("/chunk")
+        self.assertEqual(response.body, b"asdfqwer")
+
+        chunks = []  # type: typing.List[bytes]
+        response = self.fetch("/chunk", streaming_callback=chunks.append)
+        self.assertEqual(chunks, [b"asdf", b"qwer"])
+        self.assertFalse(response.body)
+
+    def test_chunked_close(self):
+        # test case in which chunks spread read-callback processing
+        # over several ioloop iterations, but the connection is already closed.
+        sock, port = bind_unused_port()
+        with closing(sock):
+
+            @gen.coroutine
+            def accept_callback(conn, address):
+                # fake an HTTP server using chunked encoding where the final chunks
+                # and connection close all happen at once
+                stream = IOStream(conn)
+                request_data = yield stream.read_until(b"\r\n\r\n")
+                if b"HTTP/1." not in request_data:
+                    self.skipTest("requires HTTP/1.x")
+                yield stream.write(
+                    b"""\
+HTTP/1.1 200 OK
+Transfer-Encoding: chunked
+
+1
+1
+1
+2
+0
+
+""".replace(
+                        b"\n", b"\r\n"
+                    )
+                )
+                stream.close()
+
+            netutil.add_accept_handler(sock, accept_callback)  # type: ignore
+            resp = self.fetch("http://127.0.0.1:%d/" % port)
+            resp.rethrow()
+            self.assertEqual(resp.body, b"12")
+            self.io_loop.remove_handler(sock.fileno())
+
+    def test_basic_auth(self):
+        # This test data appears in section 2 of RFC 7617.
+        self.assertEqual(
+            self.fetch(
+                "/auth", auth_username="Aladdin", auth_password="open sesame"
+            ).body,
+            b"Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==",
+        )
+
+    def test_basic_auth_explicit_mode(self):
+        self.assertEqual(
+            self.fetch(
+                "/auth",
+                auth_username="Aladdin",
+                auth_password="open sesame",
+                auth_mode="basic",
+            ).body,
+            b"Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==",
+        )
+
+    def test_basic_auth_unicode(self):
+        # This test data appears in section 2.1 of RFC 7617.
+        self.assertEqual(
+            self.fetch("/auth", auth_username="test", auth_password="123£").body,
+            b"Basic dGVzdDoxMjPCow==",
+        )
+
+        # The standard mandates NFC. Give it a decomposed username
+        # and ensure it is normalized to composed form.
+        username = unicodedata.normalize("NFD", u"josé")
+        self.assertEqual(
+            self.fetch("/auth", auth_username=username, auth_password="səcrət").body,
+            b"Basic am9zw6k6c8mZY3LJmXQ=",
+        )
+
+    def test_unsupported_auth_mode(self):
+        # curl and simple clients handle errors a bit differently; the
+        # important thing is that they don't fall back to basic auth
+        # on an unknown mode.
+        with ExpectLog(gen_log, "uncaught exception", required=False):
+            with self.assertRaises((ValueError, HTTPError)):  # type: ignore
+                self.fetch(
+                    "/auth",
+                    auth_username="Aladdin",
+                    auth_password="open sesame",
+                    auth_mode="asdf",
+                    raise_error=True,
+                )
+
+    def test_follow_redirect(self):
+        response = self.fetch("/countdown/2", follow_redirects=False)
+        self.assertEqual(302, response.code)
+        self.assertTrue(response.headers["Location"].endswith("/countdown/1"))
+
+        response = self.fetch("/countdown/2")
+        self.assertEqual(200, response.code)
+        self.assertTrue(response.effective_url.endswith("/countdown/0"))
+        self.assertEqual(b"Zero", response.body)
+
+    def test_redirect_without_location(self):
+        response = self.fetch("/redirect_without_location", follow_redirects=True)
+        # If there is no location header, the redirect response should
+        # just be returned as-is. (This should arguably raise an
+        # error, but libcurl doesn't treat this as an error, so we
+        # don't either).
+        self.assertEqual(301, response.code)
+
+    def test_redirect_put_with_body(self):
+        response = self.fetch(
+            "/redirect?url=/put&status=307", method="PUT", body="hello"
+        )
+        self.assertEqual(response.body, b"Put body: hello")
+
+    def test_redirect_put_without_body(self):
+        # This "without body" edge case is similar to what happens with body_producer.
+        response = self.fetch(
+            "/redirect?url=/put&status=307",
+            method="PUT",
+            allow_nonstandard_methods=True,
+        )
+        self.assertEqual(response.body, b"Put body: ")
+
+    def test_method_after_redirect(self):
+        # Legacy redirect codes (301, 302) convert POST requests to GET.
+        for status in [301, 302, 303]:
+            url = "/redirect?url=/all_methods&status=%d" % status
+            resp = self.fetch(url, method="POST", body=b"")
+            self.assertEqual(b"GET", resp.body)
+
+            # Other methods are left alone, except for 303 redirect, depending on client
+            for method in ["GET", "OPTIONS", "PUT", "DELETE"]:
+                resp = self.fetch(url, method=method, allow_nonstandard_methods=True)
+                if status in [301, 302]:
+                    self.assertEqual(utf8(method), resp.body)
+                else:
+                    self.assertIn(resp.body, [utf8(method), b"GET"])
+
+            # HEAD is different so check it separately.
+            resp = self.fetch(url, method="HEAD")
+            self.assertEqual(200, resp.code)
+            self.assertEqual(b"", resp.body)
+
+        # Newer redirects always preserve the original method.
+        for status in [307, 308]:
+            url = "/redirect?url=/all_methods&status=307"
+            for method in ["GET", "OPTIONS", "POST", "PUT", "DELETE"]:
+                resp = self.fetch(url, method=method, allow_nonstandard_methods=True)
+                self.assertEqual(method, to_unicode(resp.body))
+            resp = self.fetch(url, method="HEAD")
+            self.assertEqual(200, resp.code)
+            self.assertEqual(b"", resp.body)
+
+    def test_credentials_in_url(self):
+        url = self.get_url("/auth").replace("http://", "http://me:secret@")
+        response = self.fetch(url)
+        self.assertEqual(b"Basic " + base64.b64encode(b"me:secret"), response.body)
+
+    def test_body_encoding(self):
+        unicode_body = u"\xe9"
+        byte_body = binascii.a2b_hex(b"e9")
+
+        # unicode string in body gets converted to utf8
+        response = self.fetch(
+            "/echopost",
+            method="POST",
+            body=unicode_body,
+            headers={"Content-Type": "application/blah"},
+        )
+        self.assertEqual(response.headers["Content-Length"], "2")
+        self.assertEqual(response.body, utf8(unicode_body))
+
+        # byte strings pass through directly
+        response = self.fetch(
+            "/echopost",
+            method="POST",
+            body=byte_body,
+            headers={"Content-Type": "application/blah"},
+        )
+        self.assertEqual(response.headers["Content-Length"], "1")
+        self.assertEqual(response.body, byte_body)
+
+        # Mixing unicode in headers and byte string bodies shouldn't
+        # break anything
+        response = self.fetch(
+            "/echopost",
+            method="POST",
+            body=byte_body,
+            headers={"Content-Type": "application/blah"},
+            user_agent=u"foo",
+        )
+        self.assertEqual(response.headers["Content-Length"], "1")
+        self.assertEqual(response.body, byte_body)
+
+    def test_types(self):
+        response = self.fetch("/hello")
+        self.assertEqual(type(response.body), bytes)
+        self.assertEqual(type(response.headers["Content-Type"]), str)
+        self.assertEqual(type(response.code), int)
+        self.assertEqual(type(response.effective_url), str)
+
+    def test_gzip(self):
+        # All the tests in this file should be using gzip, but this test
+        # ensures that it is in fact getting compressed, and also tests
+        # the httpclient's decompress=False option.
+        # Setting Accept-Encoding manually bypasses the client's
+        # decompression so we can see the raw data.
+        response = self.fetch(
+            "/chunk", decompress_response=False, headers={"Accept-Encoding": "gzip"}
+        )
+        self.assertEqual(response.headers["Content-Encoding"], "gzip")
+        self.assertNotEqual(response.body, b"asdfqwer")
+        # Our test data gets bigger when gzipped.  Oops.  :)
+        # Chunked encoding bypasses the MIN_LENGTH check.
+        self.assertEqual(len(response.body), 34)
+        f = gzip.GzipFile(mode="r", fileobj=response.buffer)
+        self.assertEqual(f.read(), b"asdfqwer")
+
+    def test_invalid_gzip(self):
+        # test if client hangs on tricky invalid gzip
+        # curl/simple httpclient have different behavior (exception, logging)
+        with ExpectLog(
+            app_log, "(Uncaught exception|Exception in callback)", required=False
+        ):
+            try:
+                response = self.fetch("/invalid_gzip")
+                self.assertEqual(response.code, 200)
+                self.assertEqual(response.body[:14], b"Hello World 0\n")
+            except HTTPError:
+                pass  # acceptable
+
+    def test_header_callback(self):
+        first_line = []
+        headers = {}
+        chunks = []
+
+        def header_callback(header_line):
+            if header_line.startswith("HTTP/1.1 101"):
+                # Upgrading to HTTP/2
+                pass
+            elif header_line.startswith("HTTP/"):
+                first_line.append(header_line)
+            elif header_line != "\r\n":
+                k, v = header_line.split(":", 1)
+                headers[k.lower()] = v.strip()
+
+        def streaming_callback(chunk):
+            # All header callbacks are run before any streaming callbacks,
+            # so the header data is available to process the data as it
+            # comes in.
+            self.assertEqual(headers["content-type"], "text/html; charset=UTF-8")
+            chunks.append(chunk)
+
+        self.fetch(
+            "/chunk",
+            header_callback=header_callback,
+            streaming_callback=streaming_callback,
+        )
+        self.assertEqual(len(first_line), 1, first_line)
+        self.assertRegexpMatches(first_line[0], "HTTP/[0-9]\\.[0-9] 200.*\r\n")
+        self.assertEqual(chunks, [b"asdf", b"qwer"])
+
+    @gen_test
+    def test_configure_defaults(self):
+        defaults = dict(user_agent="TestDefaultUserAgent", allow_ipv6=False)
+        # Construct a new instance of the configured client class
+        client = self.http_client.__class__(force_instance=True, defaults=defaults)
+        try:
+            response = yield client.fetch(self.get_url("/user_agent"))
+            self.assertEqual(response.body, b"TestDefaultUserAgent")
+        finally:
+            client.close()
+
+    def test_header_types(self):
+        # Header values may be passed as character or utf8 byte strings,
+        # in a plain dictionary or an HTTPHeaders object.
+        # Keys must always be the native str type.
+        # All combinations should have the same results on the wire.
+        for value in [u"MyUserAgent", b"MyUserAgent"]:
+            for container in [dict, HTTPHeaders]:
+                headers = container()
+                headers["User-Agent"] = value
+                resp = self.fetch("/user_agent", headers=headers)
+                self.assertEqual(
+                    resp.body,
+                    b"MyUserAgent",
+                    "response=%r, value=%r, container=%r"
+                    % (resp.body, value, container),
+                )
+
+    def test_multi_line_headers(self):
+        # Multi-line http headers are rare but rfc-allowed
+        # http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2
+        sock, port = bind_unused_port()
+        with closing(sock):
+
+            @gen.coroutine
+            def accept_callback(conn, address):
+                stream = IOStream(conn)
+                request_data = yield stream.read_until(b"\r\n\r\n")
+                if b"HTTP/1." not in request_data:
+                    self.skipTest("requires HTTP/1.x")
+                yield stream.write(
+                    b"""\
+HTTP/1.1 200 OK
+X-XSS-Protection: 1;
+\tmode=block
+
+""".replace(
+                        b"\n", b"\r\n"
+                    )
+                )
+                stream.close()
+
+            netutil.add_accept_handler(sock, accept_callback)  # type: ignore
+            try:
+                resp = self.fetch("http://127.0.0.1:%d/" % port)
+                resp.rethrow()
+                self.assertEqual(resp.headers["X-XSS-Protection"], "1; mode=block")
+            finally:
+                self.io_loop.remove_handler(sock.fileno())
+
+    def test_304_with_content_length(self):
+        # According to the spec 304 responses SHOULD NOT include
+        # Content-Length or other entity headers, but some servers do it
+        # anyway.
+        # http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.5
+        response = self.fetch("/304_with_content_length")
+        self.assertEqual(response.code, 304)
+        self.assertEqual(response.headers["Content-Length"], "42")
+
+    @gen_test
+    def test_future_interface(self):
+        response = yield self.http_client.fetch(self.get_url("/hello"))
+        self.assertEqual(response.body, b"Hello world!")
+
+    @gen_test
+    def test_future_http_error(self):
+        with self.assertRaises(HTTPError) as context:
+            yield self.http_client.fetch(self.get_url("/notfound"))
+        assert context.exception is not None
+        assert context.exception.response is not None
+        self.assertEqual(context.exception.code, 404)
+        self.assertEqual(context.exception.response.code, 404)
+
+    @gen_test
+    def test_future_http_error_no_raise(self):
+        response = yield self.http_client.fetch(
+            self.get_url("/notfound"), raise_error=False
+        )
+        self.assertEqual(response.code, 404)
+
+    @gen_test
+    def test_reuse_request_from_response(self):
+        # The response.request attribute should be an HTTPRequest, not
+        # a _RequestProxy.
+        # This test uses self.http_client.fetch because self.fetch calls
+        # self.get_url on the input unconditionally.
+        url = self.get_url("/hello")
+        response = yield self.http_client.fetch(url)
+        self.assertEqual(response.request.url, url)
+        self.assertTrue(isinstance(response.request, HTTPRequest))
+        response2 = yield self.http_client.fetch(response.request)
+        self.assertEqual(response2.body, b"Hello world!")
+
+    @gen_test
+    def test_bind_source_ip(self):
+        url = self.get_url("/hello")
+        request = HTTPRequest(url, network_interface="127.0.0.1")
+        response = yield self.http_client.fetch(request)
+        self.assertEqual(response.code, 200)
+
+        with self.assertRaises((ValueError, HTTPError)) as context:  # type: ignore
+            request = HTTPRequest(url, network_interface="not-interface-or-ip")
+            yield self.http_client.fetch(request)
+        self.assertIn("not-interface-or-ip", str(context.exception))
+
+    def test_all_methods(self):
+        for method in ["GET", "DELETE", "OPTIONS"]:
+            response = self.fetch("/all_methods", method=method)
+            self.assertEqual(response.body, utf8(method))
+        for method in ["POST", "PUT", "PATCH"]:
+            response = self.fetch("/all_methods", method=method, body=b"")
+            self.assertEqual(response.body, utf8(method))
+        response = self.fetch("/all_methods", method="HEAD")
+        self.assertEqual(response.body, b"")
+        response = self.fetch(
+            "/all_methods", method="OTHER", allow_nonstandard_methods=True
+        )
+        self.assertEqual(response.body, b"OTHER")
+
+    def test_body_sanity_checks(self):
+        # These methods require a body.
+        for method in ("POST", "PUT", "PATCH"):
+            with self.assertRaises(ValueError) as context:
+                self.fetch("/all_methods", method=method, raise_error=True)
+            self.assertIn("must not be None", str(context.exception))
+
+            resp = self.fetch(
+                "/all_methods", method=method, allow_nonstandard_methods=True
+            )
+            self.assertEqual(resp.code, 200)
+
+        # These methods don't allow a body.
+        for method in ("GET", "DELETE", "OPTIONS"):
+            with self.assertRaises(ValueError) as context:
+                self.fetch(
+                    "/all_methods", method=method, body=b"asdf", raise_error=True
+                )
+            self.assertIn("must be None", str(context.exception))
+
+            # In most cases this can be overridden, but curl_httpclient
+            # does not allow body with a GET at all.
+            if method != "GET":
+                self.fetch(
+                    "/all_methods",
+                    method=method,
+                    body=b"asdf",
+                    allow_nonstandard_methods=True,
+                    raise_error=True,
+                )
+                self.assertEqual(resp.code, 200)
+
+    # This test causes odd failures with the combination of
+    # curl_httpclient (at least with the version of libcurl available
+    # on ubuntu 12.04), TwistedIOLoop, and epoll.  For POST (but not PUT),
+    # curl decides the response came back too soon and closes the connection
+    # to start again.  It does this *before* telling the socket callback to
+    # unregister the FD.  Some IOLoop implementations have special kernel
+    # integration to discover this immediately.  Tornado's IOLoops
+    # ignore errors on remove_handler to accommodate this behavior, but
+    # Twisted's reactor does not.  The removeReader call fails and so
+    # do all future removeAll calls (which our tests do at cleanup).
+    #
+    # def test_post_307(self):
+    #    response = self.fetch("/redirect?status=307&url=/post",
+    #                          method="POST", body=b"arg1=foo&arg2=bar")
+    #    self.assertEqual(response.body, b"Post arg1: foo, arg2: bar")
+
+    def test_put_307(self):
+        response = self.fetch(
+            "/redirect?status=307&url=/put", method="PUT", body=b"hello"
+        )
+        response.rethrow()
+        self.assertEqual(response.body, b"Put body: hello")
+
+    def test_non_ascii_header(self):
+        # Non-ascii headers are sent as latin1.
+        response = self.fetch("/set_header?k=foo&v=%E9")
+        response.rethrow()
+        self.assertEqual(response.headers["Foo"], native_str(u"\u00e9"))
+
+    def test_response_times(self):
+        # A few simple sanity checks of the response time fields to
+        # make sure they're using the right basis (between the
+        # wall-time and monotonic clocks).
+        start_time = time.time()
+        response = self.fetch("/hello")
+        response.rethrow()
+        self.assertGreaterEqual(response.request_time, 0)
+        self.assertLess(response.request_time, 1.0)
+        # A very crude check to make sure that start_time is based on
+        # wall time and not the monotonic clock.
+        assert response.start_time is not None
+        self.assertLess(abs(response.start_time - start_time), 1.0)
+
+        for k, v in response.time_info.items():
+            self.assertTrue(0 <= v < 1.0, "time_info[%s] out of bounds: %s" % (k, v))
+
+    def test_zero_timeout(self):
+        response = self.fetch("/hello", connect_timeout=0)
+        self.assertEqual(response.code, 200)
+
+        response = self.fetch("/hello", request_timeout=0)
+        self.assertEqual(response.code, 200)
+
+        response = self.fetch("/hello", connect_timeout=0, request_timeout=0)
+        self.assertEqual(response.code, 200)
+
+    @gen_test
+    def test_error_after_cancel(self):
+        fut = self.http_client.fetch(self.get_url("/404"))
+        self.assertTrue(fut.cancel())
+        with ExpectLog(app_log, "Exception after Future was cancelled") as el:
+            # We can't wait on the cancelled Future any more, so just
+            # let the IOLoop run until the exception gets logged (or
+            # not, in which case we exit the loop and ExpectLog will
+            # raise).
+            for i in range(100):
+                yield gen.sleep(0.01)
+                if el.logged_stack:
+                    break
+
+
+class RequestProxyTest(unittest.TestCase):
+    def test_request_set(self):
+        proxy = _RequestProxy(
+            HTTPRequest("http://example.com/", user_agent="foo"), dict()
+        )
+        self.assertEqual(proxy.user_agent, "foo")
+
+    def test_default_set(self):
+        proxy = _RequestProxy(
+            HTTPRequest("http://example.com/"), dict(network_interface="foo")
+        )
+        self.assertEqual(proxy.network_interface, "foo")
+
+    def test_both_set(self):
+        proxy = _RequestProxy(
+            HTTPRequest("http://example.com/", proxy_host="foo"), dict(proxy_host="bar")
+        )
+        self.assertEqual(proxy.proxy_host, "foo")
+
+    def test_neither_set(self):
+        proxy = _RequestProxy(HTTPRequest("http://example.com/"), dict())
+        self.assertIs(proxy.auth_username, None)
+
+    def test_bad_attribute(self):
+        proxy = _RequestProxy(HTTPRequest("http://example.com/"), dict())
+        with self.assertRaises(AttributeError):
+            proxy.foo
+
+    def test_defaults_none(self):
+        proxy = _RequestProxy(HTTPRequest("http://example.com/"), None)
+        self.assertIs(proxy.auth_username, None)
+
+
+class HTTPResponseTestCase(unittest.TestCase):
+    def test_str(self):
+        response = HTTPResponse(  # type: ignore
+            HTTPRequest("http://example.com"), 200, buffer=BytesIO()
+        )
+        s = str(response)
+        self.assertTrue(s.startswith("HTTPResponse("))
+        self.assertIn("code=200", s)
+
+
+class SyncHTTPClientTest(unittest.TestCase):
+    def setUp(self):
+        self.server_ioloop = IOLoop()
+        event = threading.Event()
+
+        @gen.coroutine
+        def init_server():
+            sock, self.port = bind_unused_port()
+            app = Application([("/", HelloWorldHandler)])
+            self.server = HTTPServer(app)
+            self.server.add_socket(sock)
+            event.set()
+
+        def start():
+            self.server_ioloop.run_sync(init_server)
+            self.server_ioloop.start()
+
+        self.server_thread = threading.Thread(target=start)
+        self.server_thread.start()
+        event.wait()
+
+        self.http_client = HTTPClient()
+
+    def tearDown(self):
+        def stop_server():
+            self.server.stop()
+            # Delay the shutdown of the IOLoop by several iterations because
+            # the server may still have some cleanup work left when
+            # the client finishes with the response (this is noticeable
+            # with http/2, which leaves a Future with an unexamined
+            # StreamClosedError on the loop).
+
+            @gen.coroutine
+            def slow_stop():
+                yield self.server.close_all_connections()
+                # The number of iterations is difficult to predict. Typically,
+                # one is sufficient, although sometimes it needs more.
+                for i in range(5):
+                    yield
+                self.server_ioloop.stop()
+
+            self.server_ioloop.add_callback(slow_stop)
+
+        self.server_ioloop.add_callback(stop_server)
+        self.server_thread.join()
+        self.http_client.close()
+        self.server_ioloop.close(all_fds=True)
+
+    def get_url(self, path):
+        return "http://127.0.0.1:%d%s" % (self.port, path)
+
+    def test_sync_client(self):
+        response = self.http_client.fetch(self.get_url("/"))
+        self.assertEqual(b"Hello world!", response.body)
+
+    def test_sync_client_error(self):
+        # Synchronous HTTPClient raises errors directly; no need for
+        # response.rethrow()
+        with self.assertRaises(HTTPError) as assertion:
+            self.http_client.fetch(self.get_url("/notfound"))
+        self.assertEqual(assertion.exception.code, 404)
+
+
+class SyncHTTPClientSubprocessTest(unittest.TestCase):
+    def test_destructor_log(self):
+        # Regression test for
+        # https://github.com/tornadoweb/tornado/issues/2539
+        #
+        # In the past, the following program would log an
+        # "inconsistent AsyncHTTPClient cache" error from a destructor
+        # when the process is shutting down. The shutdown process is
+        # subtle and I don't fully understand it; the failure does not
+        # manifest if that lambda isn't there or is a simpler object
+        # like an int (nor does it manifest in the tornado test suite
+        # as a whole, which is why we use this subprocess).
+        proc = subprocess.run(
+            [
+                sys.executable,
+                "-c",
+                "from tornado.httpclient import HTTPClient; f = lambda: None; c = HTTPClient()",
+            ],
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+            check=True,
+            timeout=5,
+        )
+        if proc.stdout:
+            print("STDOUT:")
+            print(to_unicode(proc.stdout))
+        if proc.stdout:
+            self.fail("subprocess produced unexpected output")
+
+
+class HTTPRequestTestCase(unittest.TestCase):
+    def test_headers(self):
+        request = HTTPRequest("http://example.com", headers={"foo": "bar"})
+        self.assertEqual(request.headers, {"foo": "bar"})
+
+    def test_headers_setter(self):
+        request = HTTPRequest("http://example.com")
+        request.headers = {"bar": "baz"}  # type: ignore
+        self.assertEqual(request.headers, {"bar": "baz"})
+
+    def test_null_headers_setter(self):
+        request = HTTPRequest("http://example.com")
+        request.headers = None  # type: ignore
+        self.assertEqual(request.headers, {})
+
+    def test_body(self):
+        request = HTTPRequest("http://example.com", body="foo")
+        self.assertEqual(request.body, utf8("foo"))
+
+    def test_body_setter(self):
+        request = HTTPRequest("http://example.com")
+        request.body = "foo"  # type: ignore
+        self.assertEqual(request.body, utf8("foo"))
+
+    def test_if_modified_since(self):
+        http_date = datetime.datetime.utcnow()
+        request = HTTPRequest("http://example.com", if_modified_since=http_date)
+        self.assertEqual(
+            request.headers, {"If-Modified-Since": format_timestamp(http_date)}
+        )
+
+
+class HTTPErrorTestCase(unittest.TestCase):
+    def test_copy(self):
+        e = HTTPError(403)
+        e2 = copy.copy(e)
+        self.assertIsNot(e, e2)
+        self.assertEqual(e.code, e2.code)
+
+    def test_plain_error(self):
+        e = HTTPError(403)
+        self.assertEqual(str(e), "HTTP 403: Forbidden")
+        self.assertEqual(repr(e), "HTTP 403: Forbidden")
+
+    def test_error_with_response(self):
+        resp = HTTPResponse(HTTPRequest("http://example.com/"), 403)
+        with self.assertRaises(HTTPError) as cm:
+            resp.rethrow()
+        e = cm.exception
+        self.assertEqual(str(e), "HTTP 403: Forbidden")
+        self.assertEqual(repr(e), "HTTP 403: Forbidden")

.venv/Lib/site-packages/tornado/test/httputil_test.py

@@ -0,0 +1,521 @@
+from tornado.httputil import (
+    url_concat,
+    parse_multipart_form_data,
+    HTTPHeaders,
+    format_timestamp,
+    HTTPServerRequest,
+    parse_request_start_line,
+    parse_cookie,
+    qs_to_qsl,
+    HTTPInputError,
+    HTTPFile,
+)
+from tornado.escape import utf8, native_str
+from tornado.log import gen_log
+from tornado.testing import ExpectLog
+
+import copy
+import datetime
+import logging
+import pickle
+import time
+import urllib.parse
+import unittest
+
+from typing import Tuple, Dict, List
+
+
+def form_data_args() -> Tuple[Dict[str, List[bytes]], Dict[str, List[HTTPFile]]]:
+    """Return two empty dicts suitable for use with parse_multipart_form_data.
+
+    mypy insists on type annotations for dict literals, so this lets us avoid
+    the verbose types throughout this test.
+    """
+    return {}, {}
+
+
+class TestUrlConcat(unittest.TestCase):
+    def test_url_concat_no_query_params(self):
+        url = url_concat("https://localhost/path", [("y", "y"), ("z", "z")])
+        self.assertEqual(url, "https://localhost/path?y=y&z=z")
+
+    def test_url_concat_encode_args(self):
+        url = url_concat("https://localhost/path", [("y", "/y"), ("z", "z")])
+        self.assertEqual(url, "https://localhost/path?y=%2Fy&z=z")
+
+    def test_url_concat_trailing_q(self):
+        url = url_concat("https://localhost/path?", [("y", "y"), ("z", "z")])
+        self.assertEqual(url, "https://localhost/path?y=y&z=z")
+
+    def test_url_concat_q_with_no_trailing_amp(self):
+        url = url_concat("https://localhost/path?x", [("y", "y"), ("z", "z")])
+        self.assertEqual(url, "https://localhost/path?x=&y=y&z=z")
+
+    def test_url_concat_trailing_amp(self):
+        url = url_concat("https://localhost/path?x&", [("y", "y"), ("z", "z")])
+        self.assertEqual(url, "https://localhost/path?x=&y=y&z=z")
+
+    def test_url_concat_mult_params(self):
+        url = url_concat("https://localhost/path?a=1&b=2", [("y", "y"), ("z", "z")])
+        self.assertEqual(url, "https://localhost/path?a=1&b=2&y=y&z=z")
+
+    def test_url_concat_no_params(self):
+        url = url_concat("https://localhost/path?r=1&t=2", [])
+        self.assertEqual(url, "https://localhost/path?r=1&t=2")
+
+    def test_url_concat_none_params(self):
+        url = url_concat("https://localhost/path?r=1&t=2", None)
+        self.assertEqual(url, "https://localhost/path?r=1&t=2")
+
+    def test_url_concat_with_frag(self):
+        url = url_concat("https://localhost/path#tab", [("y", "y")])
+        self.assertEqual(url, "https://localhost/path?y=y#tab")
+
+    def test_url_concat_multi_same_params(self):
+        url = url_concat("https://localhost/path", [("y", "y1"), ("y", "y2")])
+        self.assertEqual(url, "https://localhost/path?y=y1&y=y2")
+
+    def test_url_concat_multi_same_query_params(self):
+        url = url_concat("https://localhost/path?r=1&r=2", [("y", "y")])
+        self.assertEqual(url, "https://localhost/path?r=1&r=2&y=y")
+
+    def test_url_concat_dict_params(self):
+        url = url_concat("https://localhost/path", dict(y="y"))
+        self.assertEqual(url, "https://localhost/path?y=y")
+
+
+class QsParseTest(unittest.TestCase):
+    def test_parsing(self):
+        qsstring = "a=1&b=2&a=3"
+        qs = urllib.parse.parse_qs(qsstring)
+        qsl = list(qs_to_qsl(qs))
+        self.assertIn(("a", "1"), qsl)
+        self.assertIn(("a", "3"), qsl)
+        self.assertIn(("b", "2"), qsl)
+
+
+class MultipartFormDataTest(unittest.TestCase):
+    def test_file_upload(self):
+        data = b"""\
+--1234
+Content-Disposition: form-data; name="files"; filename="ab.txt"
+
+Foo
+--1234--""".replace(
+            b"\n", b"\r\n"
+        )
+        args, files = form_data_args()
+        parse_multipart_form_data(b"1234", data, args, files)
+        file = files["files"][0]
+        self.assertEqual(file["filename"], "ab.txt")
+        self.assertEqual(file["body"], b"Foo")
+
+    def test_unquoted_names(self):
+        # quotes are optional unless special characters are present
+        data = b"""\
+--1234
+Content-Disposition: form-data; name=files; filename=ab.txt
+
+Foo
+--1234--""".replace(
+            b"\n", b"\r\n"
+        )
+        args, files = form_data_args()
+        parse_multipart_form_data(b"1234", data, args, files)
+        file = files["files"][0]
+        self.assertEqual(file["filename"], "ab.txt")
+        self.assertEqual(file["body"], b"Foo")
+
+    def test_special_filenames(self):
+        filenames = [
+            "a;b.txt",
+            'a"b.txt',
+            'a";b.txt',
+            'a;"b.txt',
+            'a";";.txt',
+            'a\\"b.txt',
+            "a\\b.txt",
+        ]
+        for filename in filenames:
+            logging.debug("trying filename %r", filename)
+            str_data = """\
+--1234
+Content-Disposition: form-data; name="files"; filename="%s"
+
+Foo
+--1234--""" % filename.replace(
+                "\\", "\\\\"
+            ).replace(
+                '"', '\\"'
+            )
+            data = utf8(str_data.replace("\n", "\r\n"))
+            args, files = form_data_args()
+            parse_multipart_form_data(b"1234", data, args, files)
+            file = files["files"][0]
+            self.assertEqual(file["filename"], filename)
+            self.assertEqual(file["body"], b"Foo")
+
+    def test_non_ascii_filename(self):
+        data = b"""\
+--1234
+Content-Disposition: form-data; name="files"; filename="ab.txt"; filename*=UTF-8''%C3%A1b.txt
+
+Foo
+--1234--""".replace(
+            b"\n", b"\r\n"
+        )
+        args, files = form_data_args()
+        parse_multipart_form_data(b"1234", data, args, files)
+        file = files["files"][0]
+        self.assertEqual(file["filename"], u"áb.txt")
+        self.assertEqual(file["body"], b"Foo")
+
+    def test_boundary_starts_and_ends_with_quotes(self):
+        data = b"""\
+--1234
+Content-Disposition: form-data; name="files"; filename="ab.txt"
+
+Foo
+--1234--""".replace(
+            b"\n", b"\r\n"
+        )
+        args, files = form_data_args()
+        parse_multipart_form_data(b'"1234"', data, args, files)
+        file = files["files"][0]
+        self.assertEqual(file["filename"], "ab.txt")
+        self.assertEqual(file["body"], b"Foo")
+
+    def test_missing_headers(self):
+        data = b"""\
+--1234
+
+Foo
+--1234--""".replace(
+            b"\n", b"\r\n"
+        )
+        args, files = form_data_args()
+        with ExpectLog(gen_log, "multipart/form-data missing headers"):
+            parse_multipart_form_data(b"1234", data, args, files)
+        self.assertEqual(files, {})
+
+    def test_invalid_content_disposition(self):
+        data = b"""\
+--1234
+Content-Disposition: invalid; name="files"; filename="ab.txt"
+
+Foo
+--1234--""".replace(
+            b"\n", b"\r\n"
+        )
+        args, files = form_data_args()
+        with ExpectLog(gen_log, "Invalid multipart/form-data"):
+            parse_multipart_form_data(b"1234", data, args, files)
+        self.assertEqual(files, {})
+
+    def test_line_does_not_end_with_correct_line_break(self):
+        data = b"""\
+--1234
+Content-Disposition: form-data; name="files"; filename="ab.txt"
+
+Foo--1234--""".replace(
+            b"\n", b"\r\n"
+        )
+        args, files = form_data_args()
+        with ExpectLog(gen_log, "Invalid multipart/form-data"):
+            parse_multipart_form_data(b"1234", data, args, files)
+        self.assertEqual(files, {})
+
+    def test_content_disposition_header_without_name_parameter(self):
+        data = b"""\
+--1234
+Content-Disposition: form-data; filename="ab.txt"
+
+Foo
+--1234--""".replace(
+            b"\n", b"\r\n"
+        )
+        args, files = form_data_args()
+        with ExpectLog(gen_log, "multipart/form-data value missing name"):
+            parse_multipart_form_data(b"1234", data, args, files)
+        self.assertEqual(files, {})
+
+    def test_data_after_final_boundary(self):
+        # The spec requires that data after the final boundary be ignored.
+        # http://www.w3.org/Protocols/rfc1341/7_2_Multipart.html
+        # In practice, some libraries include an extra CRLF after the boundary.
+        data = b"""\
+--1234
+Content-Disposition: form-data; name="files"; filename="ab.txt"
+
+Foo
+--1234--
+""".replace(
+            b"\n", b"\r\n"
+        )
+        args, files = form_data_args()
+        parse_multipart_form_data(b"1234", data, args, files)
+        file = files["files"][0]
+        self.assertEqual(file["filename"], "ab.txt")
+        self.assertEqual(file["body"], b"Foo")
+
+
+class HTTPHeadersTest(unittest.TestCase):
+    def test_multi_line(self):
+        # Lines beginning with whitespace are appended to the previous line
+        # with any leading whitespace replaced by a single space.
+        # Note that while multi-line headers are a part of the HTTP spec,
+        # their use is strongly discouraged.
+        data = """\
+Foo: bar
+ baz
+Asdf: qwer
+\tzxcv
+Foo: even
+     more
+     lines
+""".replace(
+            "\n", "\r\n"
+        )
+        headers = HTTPHeaders.parse(data)
+        self.assertEqual(headers["asdf"], "qwer zxcv")
+        self.assertEqual(headers.get_list("asdf"), ["qwer zxcv"])
+        self.assertEqual(headers["Foo"], "bar baz,even more lines")
+        self.assertEqual(headers.get_list("foo"), ["bar baz", "even more lines"])
+        self.assertEqual(
+            sorted(list(headers.get_all())),
+            [("Asdf", "qwer zxcv"), ("Foo", "bar baz"), ("Foo", "even more lines")],
+        )
+
+    def test_malformed_continuation(self):
+        # If the first line starts with whitespace, it's a
+        # continuation line with nothing to continue, so reject it
+        # (with a proper error).
+        data = " Foo: bar"
+        self.assertRaises(HTTPInputError, HTTPHeaders.parse, data)
+
+    def test_unicode_newlines(self):
+        # Ensure that only \r\n is recognized as a header separator, and not
+        # the other newline-like unicode characters.
+        # Characters that are likely to be problematic can be found in
+        # http://unicode.org/standard/reports/tr13/tr13-5.html
+        # and cpython's unicodeobject.c (which defines the implementation
+        # of unicode_type.splitlines(), and uses a different list than TR13).
+        newlines = [
+            u"\u001b",  # VERTICAL TAB
+            u"\u001c",  # FILE SEPARATOR
+            u"\u001d",  # GROUP SEPARATOR
+            u"\u001e",  # RECORD SEPARATOR
+            u"\u0085",  # NEXT LINE
+            u"\u2028",  # LINE SEPARATOR
+            u"\u2029",  # PARAGRAPH SEPARATOR
+        ]
+        for newline in newlines:
+            # Try the utf8 and latin1 representations of each newline
+            for encoding in ["utf8", "latin1"]:
+                try:
+                    try:
+                        encoded = newline.encode(encoding)
+                    except UnicodeEncodeError:
+                        # Some chars cannot be represented in latin1
+                        continue
+                    data = b"Cookie: foo=" + encoded + b"bar"
+                    # parse() wants a native_str, so decode through latin1
+                    # in the same way the real parser does.
+                    headers = HTTPHeaders.parse(native_str(data.decode("latin1")))
+                    expected = [
+                        (
+                            "Cookie",
+                            "foo=" + native_str(encoded.decode("latin1")) + "bar",
+                        )
+                    ]
+                    self.assertEqual(expected, list(headers.get_all()))
+                except Exception:
+                    gen_log.warning("failed while trying %r in %s", newline, encoding)
+                    raise
+
+    def test_optional_cr(self):
+        # Both CRLF and LF should be accepted as separators. CR should not be
+        # part of the data when followed by LF, but it is a normal char
+        # otherwise (or should bare CR be an error?)
+        headers = HTTPHeaders.parse("CRLF: crlf\r\nLF: lf\nCR: cr\rMore: more\r\n")
+        self.assertEqual(
+            sorted(headers.get_all()),
+            [("Cr", "cr\rMore: more"), ("Crlf", "crlf"), ("Lf", "lf")],
+        )
+
+    def test_copy(self):
+        all_pairs = [("A", "1"), ("A", "2"), ("B", "c")]
+        h1 = HTTPHeaders()
+        for k, v in all_pairs:
+            h1.add(k, v)
+        h2 = h1.copy()
+        h3 = copy.copy(h1)
+        h4 = copy.deepcopy(h1)
+        for headers in [h1, h2, h3, h4]:
+            # All the copies are identical, no matter how they were
+            # constructed.
+            self.assertEqual(list(sorted(headers.get_all())), all_pairs)
+        for headers in [h2, h3, h4]:
+            # Neither the dict or its member lists are reused.
+            self.assertIsNot(headers, h1)
+            self.assertIsNot(headers.get_list("A"), h1.get_list("A"))
+
+    def test_pickle_roundtrip(self):
+        headers = HTTPHeaders()
+        headers.add("Set-Cookie", "a=b")
+        headers.add("Set-Cookie", "c=d")
+        headers.add("Content-Type", "text/html")
+        pickled = pickle.dumps(headers)
+        unpickled = pickle.loads(pickled)
+        self.assertEqual(sorted(headers.get_all()), sorted(unpickled.get_all()))
+        self.assertEqual(sorted(headers.items()), sorted(unpickled.items()))
+
+    def test_setdefault(self):
+        headers = HTTPHeaders()
+        headers["foo"] = "bar"
+        # If a value is present, setdefault returns it without changes.
+        self.assertEqual(headers.setdefault("foo", "baz"), "bar")
+        self.assertEqual(headers["foo"], "bar")
+        # If a value is not present, setdefault sets it for future use.
+        self.assertEqual(headers.setdefault("quux", "xyzzy"), "xyzzy")
+        self.assertEqual(headers["quux"], "xyzzy")
+        self.assertEqual(sorted(headers.get_all()), [("Foo", "bar"), ("Quux", "xyzzy")])
+
+    def test_string(self):
+        headers = HTTPHeaders()
+        headers.add("Foo", "1")
+        headers.add("Foo", "2")
+        headers.add("Foo", "3")
+        headers2 = HTTPHeaders.parse(str(headers))
+        self.assertEqual(headers, headers2)
+
+
+class FormatTimestampTest(unittest.TestCase):
+    # Make sure that all the input types are supported.
+    TIMESTAMP = 1359312200.503611
+    EXPECTED = "Sun, 27 Jan 2013 18:43:20 GMT"
+
+    def check(self, value):
+        self.assertEqual(format_timestamp(value), self.EXPECTED)
+
+    def test_unix_time_float(self):
+        self.check(self.TIMESTAMP)
+
+    def test_unix_time_int(self):
+        self.check(int(self.TIMESTAMP))
+
+    def test_struct_time(self):
+        self.check(time.gmtime(self.TIMESTAMP))
+
+    def test_time_tuple(self):
+        tup = tuple(time.gmtime(self.TIMESTAMP))
+        self.assertEqual(9, len(tup))
+        self.check(tup)
+
+    def test_datetime(self):
+        self.check(datetime.datetime.utcfromtimestamp(self.TIMESTAMP))
+
+
+# HTTPServerRequest is mainly tested incidentally to the server itself,
+# but this tests the parts of the class that can be tested in isolation.
+class HTTPServerRequestTest(unittest.TestCase):
+    def test_default_constructor(self):
+        # All parameters are formally optional, but uri is required
+        # (and has been for some time).  This test ensures that no
+        # more required parameters slip in.
+        HTTPServerRequest(uri="/")
+
+    def test_body_is_a_byte_string(self):
+        requets = HTTPServerRequest(uri="/")
+        self.assertIsInstance(requets.body, bytes)
+
+    def test_repr_does_not_contain_headers(self):
+        request = HTTPServerRequest(
+            uri="/", headers=HTTPHeaders({"Canary": ["Coal Mine"]})
+        )
+        self.assertTrue("Canary" not in repr(request))
+
+
+class ParseRequestStartLineTest(unittest.TestCase):
+    METHOD = "GET"
+    PATH = "/foo"
+    VERSION = "HTTP/1.1"
+
+    def test_parse_request_start_line(self):
+        start_line = " ".join([self.METHOD, self.PATH, self.VERSION])
+        parsed_start_line = parse_request_start_line(start_line)
+        self.assertEqual(parsed_start_line.method, self.METHOD)
+        self.assertEqual(parsed_start_line.path, self.PATH)
+        self.assertEqual(parsed_start_line.version, self.VERSION)
+
+
+class ParseCookieTest(unittest.TestCase):
+    # These tests copied from Django:
+    # https://github.com/django/django/pull/6277/commits/da810901ada1cae9fc1f018f879f11a7fb467b28
+    def test_python_cookies(self):
+        """
+        Test cases copied from Python's Lib/test/test_http_cookies.py
+        """
+        self.assertEqual(
+            parse_cookie("chips=ahoy; vienna=finger"),
+            {"chips": "ahoy", "vienna": "finger"},
+        )
+        # Here parse_cookie() differs from Python's cookie parsing in that it
+        # treats all semicolons as delimiters, even within quotes.
+        self.assertEqual(
+            parse_cookie('keebler="E=mc2; L=\\"Loves\\"; fudge=\\012;"'),
+            {"keebler": '"E=mc2', "L": '\\"Loves\\"', "fudge": "\\012", "": '"'},
+        )
+        # Illegal cookies that have an '=' char in an unquoted value.
+        self.assertEqual(parse_cookie("keebler=E=mc2"), {"keebler": "E=mc2"})
+        # Cookies with ':' character in their name.
+        self.assertEqual(
+            parse_cookie("key:term=value:term"), {"key:term": "value:term"}
+        )
+        # Cookies with '[' and ']'.
+        self.assertEqual(
+            parse_cookie("a=b; c=[; d=r; f=h"), {"a": "b", "c": "[", "d": "r", "f": "h"}
+        )
+
+    def test_cookie_edgecases(self):
+        # Cookies that RFC6265 allows.
+        self.assertEqual(
+            parse_cookie("a=b; Domain=example.com"), {"a": "b", "Domain": "example.com"}
+        )
+        # parse_cookie() has historically kept only the last cookie with the
+        # same name.
+        self.assertEqual(parse_cookie("a=b; h=i; a=c"), {"a": "c", "h": "i"})
+
+    def test_invalid_cookies(self):
+        """
+        Cookie strings that go against RFC6265 but browsers will send if set
+        via document.cookie.
+        """
+        # Chunks without an equals sign appear as unnamed values per
+        # https://bugzilla.mozilla.org/show_bug.cgi?id=169091
+        self.assertIn(
+            "django_language",
+            parse_cookie("abc=def; unnamed; django_language=en").keys(),
+        )
+        # Even a double quote may be an unamed value.
+        self.assertEqual(parse_cookie('a=b; "; c=d'), {"a": "b", "": '"', "c": "d"})
+        # Spaces in names and values, and an equals sign in values.
+        self.assertEqual(
+            parse_cookie("a b c=d e = f; gh=i"), {"a b c": "d e = f", "gh": "i"}
+        )
+        # More characters the spec forbids.
+        self.assertEqual(
+            parse_cookie('a   b,c<>@:/[]?{}=d  "  =e,f g'),
+            {"a   b,c<>@:/[]?{}": 'd  "  =e,f g'},
+        )
+        # Unicode characters. The spec only allows ASCII.
+        self.assertEqual(
+            parse_cookie("saint=André Bessette"),
+            {"saint": native_str("André Bessette")},
+        )
+        # Browsers don't send extra whitespace or semicolons in Cookie headers,
+        # but parse_cookie() should parse whitespace the same way
+        # document.cookie parses whitespace.
+        self.assertEqual(
+            parse_cookie("  =  b  ;  ;  =  ;   c  =  ;  "), {"": "b", "c": ""}
+        )

.venv/Lib/site-packages/tornado/test/import_test.py

@@ -0,0 +1,66 @@
+# flake8: noqa
+import subprocess
+import sys
+import unittest
+
+_import_everything = b"""
+# The event loop is not fork-safe, and it's easy to initialize an asyncio.Future
+# at startup, which in turn creates the default event loop and prevents forking.
+# Explicitly disallow the default event loop so that an error will be raised
+# if something tries to touch it.
+import asyncio
+asyncio.set_event_loop(None)
+
+import tornado.auth
+import tornado.autoreload
+import tornado.concurrent
+import tornado.escape
+import tornado.gen
+import tornado.http1connection
+import tornado.httpclient
+import tornado.httpserver
+import tornado.httputil
+import tornado.ioloop
+import tornado.iostream
+import tornado.locale
+import tornado.log
+import tornado.netutil
+import tornado.options
+import tornado.process
+import tornado.simple_httpclient
+import tornado.tcpserver
+import tornado.tcpclient
+import tornado.template
+import tornado.testing
+import tornado.util
+import tornado.web
+import tornado.websocket
+import tornado.wsgi
+
+try:
+    import pycurl
+except ImportError:
+    pass
+else:
+    import tornado.curl_httpclient
+"""
+
+
+class ImportTest(unittest.TestCase):
+    def test_import_everything(self):
+        # Test that all Tornado modules can be imported without side effects,
+        # specifically without initializing the default asyncio event loop.
+        # Since we can't tell which modules may have already beein imported
+        # in our process, do it in a subprocess for a clean slate.
+        proc = subprocess.Popen([sys.executable], stdin=subprocess.PIPE)
+        proc.communicate(_import_everything)
+        self.assertEqual(proc.returncode, 0)
+
+    def test_import_aliases(self):
+        # Ensure we don't delete formerly-documented aliases accidentally.
+        import tornado.ioloop
+        import tornado.gen
+        import tornado.util
+
+        self.assertIs(tornado.ioloop.TimeoutError, tornado.util.TimeoutError)
+        self.assertIs(tornado.gen.TimeoutError, tornado.util.TimeoutError)

.venv/Lib/site-packages/tornado/test/ioloop_test.py

@@ -0,0 +1,725 @@
+from concurrent.futures import ThreadPoolExecutor
+from concurrent import futures
+import contextlib
+import datetime
+import functools
+import socket
+import subprocess
+import sys
+import threading
+import time
+import types
+from unittest import mock
+import unittest
+
+from tornado.escape import native_str
+from tornado import gen
+from tornado.ioloop import IOLoop, TimeoutError, PeriodicCallback
+from tornado.log import app_log
+from tornado.testing import AsyncTestCase, bind_unused_port, ExpectLog, gen_test
+from tornado.test.util import skipIfNonUnix, skipOnTravis
+
+import typing
+
+if typing.TYPE_CHECKING:
+    from typing import List  # noqa: F401
+
+
+class TestIOLoop(AsyncTestCase):
+    def test_add_callback_return_sequence(self):
+        # A callback returning {} or [] shouldn't spin the CPU, see Issue #1803.
+        self.calls = 0
+
+        loop = self.io_loop
+        test = self
+        old_add_callback = loop.add_callback
+
+        def add_callback(self, callback, *args, **kwargs):
+            test.calls += 1
+            old_add_callback(callback, *args, **kwargs)
+
+        loop.add_callback = types.MethodType(add_callback, loop)  # type: ignore
+        loop.add_callback(lambda: {})  # type: ignore
+        loop.add_callback(lambda: [])  # type: ignore
+        loop.add_timeout(datetime.timedelta(milliseconds=50), loop.stop)
+        loop.start()
+        self.assertLess(self.calls, 10)
+
+    @skipOnTravis
+    def test_add_callback_wakeup(self):
+        # Make sure that add_callback from inside a running IOLoop
+        # wakes up the IOLoop immediately instead of waiting for a timeout.
+        def callback():
+            self.called = True
+            self.stop()
+
+        def schedule_callback():
+            self.called = False
+            self.io_loop.add_callback(callback)
+            # Store away the time so we can check if we woke up immediately
+            self.start_time = time.time()
+
+        self.io_loop.add_timeout(self.io_loop.time(), schedule_callback)
+        self.wait()
+        self.assertAlmostEqual(time.time(), self.start_time, places=2)
+        self.assertTrue(self.called)
+
+    @skipOnTravis
+    def test_add_callback_wakeup_other_thread(self):
+        def target():
+            # sleep a bit to let the ioloop go into its poll loop
+            time.sleep(0.01)
+            self.stop_time = time.time()
+            self.io_loop.add_callback(self.stop)
+
+        thread = threading.Thread(target=target)
+        self.io_loop.add_callback(thread.start)
+        self.wait()
+        delta = time.time() - self.stop_time
+        self.assertLess(delta, 0.1)
+        thread.join()
+
+    def test_add_timeout_timedelta(self):
+        self.io_loop.add_timeout(datetime.timedelta(microseconds=1), self.stop)
+        self.wait()
+
+    def test_multiple_add(self):
+        sock, port = bind_unused_port()
+        try:
+            self.io_loop.add_handler(
+                sock.fileno(), lambda fd, events: None, IOLoop.READ
+            )
+            # Attempting to add the same handler twice fails
+            # (with a platform-dependent exception)
+            self.assertRaises(
+                Exception,
+                self.io_loop.add_handler,
+                sock.fileno(),
+                lambda fd, events: None,
+                IOLoop.READ,
+            )
+        finally:
+            self.io_loop.remove_handler(sock.fileno())
+            sock.close()
+
+    def test_remove_without_add(self):
+        # remove_handler should not throw an exception if called on an fd
+        # was never added.
+        sock, port = bind_unused_port()
+        try:
+            self.io_loop.remove_handler(sock.fileno())
+        finally:
+            sock.close()
+
+    def test_add_callback_from_signal(self):
+        # cheat a little bit and just run this normally, since we can't
+        # easily simulate the races that happen with real signal handlers
+        self.io_loop.add_callback_from_signal(self.stop)
+        self.wait()
+
+    def test_add_callback_from_signal_other_thread(self):
+        # Very crude test, just to make sure that we cover this case.
+        # This also happens to be the first test where we run an IOLoop in
+        # a non-main thread.
+        other_ioloop = IOLoop()
+        thread = threading.Thread(target=other_ioloop.start)
+        thread.start()
+        other_ioloop.add_callback_from_signal(other_ioloop.stop)
+        thread.join()
+        other_ioloop.close()
+
+    def test_add_callback_while_closing(self):
+        # add_callback should not fail if it races with another thread
+        # closing the IOLoop. The callbacks are dropped silently
+        # without executing.
+        closing = threading.Event()
+
+        def target():
+            other_ioloop.add_callback(other_ioloop.stop)
+            other_ioloop.start()
+            closing.set()
+            other_ioloop.close(all_fds=True)
+
+        other_ioloop = IOLoop()
+        thread = threading.Thread(target=target)
+        thread.start()
+        closing.wait()
+        for i in range(1000):
+            other_ioloop.add_callback(lambda: None)
+
+    @skipIfNonUnix  # just because socketpair is so convenient
+    def test_read_while_writeable(self):
+        # Ensure that write events don't come in while we're waiting for
+        # a read and haven't asked for writeability. (the reverse is
+        # difficult to test for)
+        client, server = socket.socketpair()
+        try:
+
+            def handler(fd, events):
+                self.assertEqual(events, IOLoop.READ)
+                self.stop()
+
+            self.io_loop.add_handler(client.fileno(), handler, IOLoop.READ)
+            self.io_loop.add_timeout(
+                self.io_loop.time() + 0.01, functools.partial(server.send, b"asdf")  # type: ignore
+            )
+            self.wait()
+            self.io_loop.remove_handler(client.fileno())
+        finally:
+            client.close()
+            server.close()
+
+    def test_remove_timeout_after_fire(self):
+        # It is not an error to call remove_timeout after it has run.
+        handle = self.io_loop.add_timeout(self.io_loop.time(), self.stop)
+        self.wait()
+        self.io_loop.remove_timeout(handle)
+
+    def test_remove_timeout_cleanup(self):
+        # Add and remove enough callbacks to trigger cleanup.
+        # Not a very thorough test, but it ensures that the cleanup code
+        # gets executed and doesn't blow up.  This test is only really useful
+        # on PollIOLoop subclasses, but it should run silently on any
+        # implementation.
+        for i in range(2000):
+            timeout = self.io_loop.add_timeout(self.io_loop.time() + 3600, lambda: None)
+            self.io_loop.remove_timeout(timeout)
+        # HACK: wait two IOLoop iterations for the GC to happen.
+        self.io_loop.add_callback(lambda: self.io_loop.add_callback(self.stop))
+        self.wait()
+
+    def test_remove_timeout_from_timeout(self):
+        calls = [False, False]
+
+        # Schedule several callbacks and wait for them all to come due at once.
+        # t2 should be cancelled by t1, even though it is already scheduled to
+        # be run before the ioloop even looks at it.
+        now = self.io_loop.time()
+
+        def t1():
+            calls[0] = True
+            self.io_loop.remove_timeout(t2_handle)
+
+        self.io_loop.add_timeout(now + 0.01, t1)
+
+        def t2():
+            calls[1] = True
+
+        t2_handle = self.io_loop.add_timeout(now + 0.02, t2)
+        self.io_loop.add_timeout(now + 0.03, self.stop)
+        time.sleep(0.03)
+        self.wait()
+        self.assertEqual(calls, [True, False])
+
+    def test_timeout_with_arguments(self):
+        # This tests that all the timeout methods pass through *args correctly.
+        results = []  # type: List[int]
+        self.io_loop.add_timeout(self.io_loop.time(), results.append, 1)
+        self.io_loop.add_timeout(datetime.timedelta(seconds=0), results.append, 2)
+        self.io_loop.call_at(self.io_loop.time(), results.append, 3)
+        self.io_loop.call_later(0, results.append, 4)
+        self.io_loop.call_later(0, self.stop)
+        self.wait()
+        # The asyncio event loop does not guarantee the order of these
+        # callbacks.
+        self.assertEqual(sorted(results), [1, 2, 3, 4])
+
+    def test_add_timeout_return(self):
+        # All the timeout methods return non-None handles that can be
+        # passed to remove_timeout.
+        handle = self.io_loop.add_timeout(self.io_loop.time(), lambda: None)
+        self.assertFalse(handle is None)
+        self.io_loop.remove_timeout(handle)
+
+    def test_call_at_return(self):
+        handle = self.io_loop.call_at(self.io_loop.time(), lambda: None)
+        self.assertFalse(handle is None)
+        self.io_loop.remove_timeout(handle)
+
+    def test_call_later_return(self):
+        handle = self.io_loop.call_later(0, lambda: None)
+        self.assertFalse(handle is None)
+        self.io_loop.remove_timeout(handle)
+
+    def test_close_file_object(self):
+        """When a file object is used instead of a numeric file descriptor,
+        the object should be closed (by IOLoop.close(all_fds=True),
+        not just the fd.
+        """
+        # Use a socket since they are supported by IOLoop on all platforms.
+        # Unfortunately, sockets don't support the .closed attribute for
+        # inspecting their close status, so we must use a wrapper.
+        class SocketWrapper(object):
+            def __init__(self, sockobj):
+                self.sockobj = sockobj
+                self.closed = False
+
+            def fileno(self):
+                return self.sockobj.fileno()
+
+            def close(self):
+                self.closed = True
+                self.sockobj.close()
+
+        sockobj, port = bind_unused_port()
+        socket_wrapper = SocketWrapper(sockobj)
+        io_loop = IOLoop()
+        io_loop.add_handler(socket_wrapper, lambda fd, events: None, IOLoop.READ)
+        io_loop.close(all_fds=True)
+        self.assertTrue(socket_wrapper.closed)
+
+    def test_handler_callback_file_object(self):
+        """The handler callback receives the same fd object it passed in."""
+        server_sock, port = bind_unused_port()
+        fds = []
+
+        def handle_connection(fd, events):
+            fds.append(fd)
+            conn, addr = server_sock.accept()
+            conn.close()
+            self.stop()
+
+        self.io_loop.add_handler(server_sock, handle_connection, IOLoop.READ)
+        with contextlib.closing(socket.socket()) as client_sock:
+            client_sock.connect(("127.0.0.1", port))
+            self.wait()
+        self.io_loop.remove_handler(server_sock)
+        self.io_loop.add_handler(server_sock.fileno(), handle_connection, IOLoop.READ)
+        with contextlib.closing(socket.socket()) as client_sock:
+            client_sock.connect(("127.0.0.1", port))
+            self.wait()
+        self.assertIs(fds[0], server_sock)
+        self.assertEqual(fds[1], server_sock.fileno())
+        self.io_loop.remove_handler(server_sock.fileno())
+        server_sock.close()
+
+    def test_mixed_fd_fileobj(self):
+        server_sock, port = bind_unused_port()
+
+        def f(fd, events):
+            pass
+
+        self.io_loop.add_handler(server_sock, f, IOLoop.READ)
+        with self.assertRaises(Exception):
+            # The exact error is unspecified - some implementations use
+            # IOError, others use ValueError.
+            self.io_loop.add_handler(server_sock.fileno(), f, IOLoop.READ)
+        self.io_loop.remove_handler(server_sock.fileno())
+        server_sock.close()
+
+    def test_reentrant(self):
+        """Calling start() twice should raise an error, not deadlock."""
+        returned_from_start = [False]
+        got_exception = [False]
+
+        def callback():
+            try:
+                self.io_loop.start()
+                returned_from_start[0] = True
+            except Exception:
+                got_exception[0] = True
+            self.stop()
+
+        self.io_loop.add_callback(callback)
+        self.wait()
+        self.assertTrue(got_exception[0])
+        self.assertFalse(returned_from_start[0])
+
+    def test_exception_logging(self):
+        """Uncaught exceptions get logged by the IOLoop."""
+        self.io_loop.add_callback(lambda: 1 / 0)
+        self.io_loop.add_callback(self.stop)
+        with ExpectLog(app_log, "Exception in callback"):
+            self.wait()
+
+    def test_exception_logging_future(self):
+        """The IOLoop examines exceptions from Futures and logs them."""
+
+        @gen.coroutine
+        def callback():
+            self.io_loop.add_callback(self.stop)
+            1 / 0
+
+        self.io_loop.add_callback(callback)
+        with ExpectLog(app_log, "Exception in callback"):
+            self.wait()
+
+    def test_exception_logging_native_coro(self):
+        """The IOLoop examines exceptions from awaitables and logs them."""
+
+        async def callback():
+            # Stop the IOLoop two iterations after raising an exception
+            # to give the exception time to be logged.
+            self.io_loop.add_callback(self.io_loop.add_callback, self.stop)
+            1 / 0
+
+        self.io_loop.add_callback(callback)
+        with ExpectLog(app_log, "Exception in callback"):
+            self.wait()
+
+    def test_spawn_callback(self):
+        # Both add_callback and spawn_callback run directly on the IOLoop,
+        # so their errors are logged without stopping the test.
+        self.io_loop.add_callback(lambda: 1 / 0)
+        self.io_loop.add_callback(self.stop)
+        with ExpectLog(app_log, "Exception in callback"):
+            self.wait()
+        # A spawned callback is run directly on the IOLoop, so it will be
+        # logged without stopping the test.
+        self.io_loop.spawn_callback(lambda: 1 / 0)
+        self.io_loop.add_callback(self.stop)
+        with ExpectLog(app_log, "Exception in callback"):
+            self.wait()
+
+    @skipIfNonUnix
+    def test_remove_handler_from_handler(self):
+        # Create two sockets with simultaneous read events.
+        client, server = socket.socketpair()
+        try:
+            client.send(b"abc")
+            server.send(b"abc")
+
+            # After reading from one fd, remove the other from the IOLoop.
+            chunks = []
+
+            def handle_read(fd, events):
+                chunks.append(fd.recv(1024))
+                if fd is client:
+                    self.io_loop.remove_handler(server)
+                else:
+                    self.io_loop.remove_handler(client)
+
+            self.io_loop.add_handler(client, handle_read, self.io_loop.READ)
+            self.io_loop.add_handler(server, handle_read, self.io_loop.READ)
+            self.io_loop.call_later(0.1, self.stop)
+            self.wait()
+
+            # Only one fd was read; the other was cleanly removed.
+            self.assertEqual(chunks, [b"abc"])
+        finally:
+            client.close()
+            server.close()
+
+    @skipIfNonUnix
+    @gen_test
+    def test_init_close_race(self):
+        # Regression test for #2367
+        #
+        # Skipped on windows because of what looks like a bug in the
+        # proactor event loop when started and stopped on non-main
+        # threads.
+        def f():
+            for i in range(10):
+                loop = IOLoop()
+                loop.close()
+
+        yield gen.multi([self.io_loop.run_in_executor(None, f) for i in range(2)])
+
+
+# Deliberately not a subclass of AsyncTestCase so the IOLoop isn't
+# automatically set as current.
+class TestIOLoopCurrent(unittest.TestCase):
+    def setUp(self):
+        self.io_loop = None  # type: typing.Optional[IOLoop]
+        IOLoop.clear_current()
+
+    def tearDown(self):
+        if self.io_loop is not None:
+            self.io_loop.close()
+
+    def test_default_current(self):
+        self.io_loop = IOLoop()
+        # The first IOLoop with default arguments is made current.
+        self.assertIs(self.io_loop, IOLoop.current())
+        # A second IOLoop can be created but is not made current.
+        io_loop2 = IOLoop()
+        self.assertIs(self.io_loop, IOLoop.current())
+        io_loop2.close()
+
+    def test_non_current(self):
+        self.io_loop = IOLoop(make_current=False)
+        # The new IOLoop is not initially made current.
+        self.assertIsNone(IOLoop.current(instance=False))
+        # Starting the IOLoop makes it current, and stopping the loop
+        # makes it non-current. This process is repeatable.
+        for i in range(3):
+
+            def f():
+                self.current_io_loop = IOLoop.current()
+                assert self.io_loop is not None
+                self.io_loop.stop()
+
+            self.io_loop.add_callback(f)
+            self.io_loop.start()
+            self.assertIs(self.current_io_loop, self.io_loop)
+            # Now that the loop is stopped, it is no longer current.
+            self.assertIsNone(IOLoop.current(instance=False))
+
+    def test_force_current(self):
+        self.io_loop = IOLoop(make_current=True)
+        self.assertIs(self.io_loop, IOLoop.current())
+        with self.assertRaises(RuntimeError):
+            # A second make_current=True construction cannot succeed.
+            IOLoop(make_current=True)
+        # current() was not affected by the failed construction.
+        self.assertIs(self.io_loop, IOLoop.current())
+
+
+class TestIOLoopCurrentAsync(AsyncTestCase):
+    @gen_test
+    def test_clear_without_current(self):
+        # If there is no current IOLoop, clear_current is a no-op (but
+        # should not fail). Use a thread so we see the threading.Local
+        # in a pristine state.
+        with ThreadPoolExecutor(1) as e:
+            yield e.submit(IOLoop.clear_current)
+
+
+class TestIOLoopFutures(AsyncTestCase):
+    def test_add_future_threads(self):
+        with futures.ThreadPoolExecutor(1) as pool:
+
+            def dummy():
+                pass
+
+            self.io_loop.add_future(
+                pool.submit(dummy), lambda future: self.stop(future)
+            )
+            future = self.wait()
+            self.assertTrue(future.done())
+            self.assertTrue(future.result() is None)
+
+    @gen_test
+    def test_run_in_executor_gen(self):
+        event1 = threading.Event()
+        event2 = threading.Event()
+
+        def sync_func(self_event, other_event):
+            self_event.set()
+            other_event.wait()
+            # Note that return value doesn't actually do anything,
+            # it is just passed through to our final assertion to
+            # make sure it is passed through properly.
+            return self_event
+
+        # Run two synchronous functions, which would deadlock if not
+        # run in parallel.
+        res = yield [
+            IOLoop.current().run_in_executor(None, sync_func, event1, event2),
+            IOLoop.current().run_in_executor(None, sync_func, event2, event1),
+        ]
+
+        self.assertEqual([event1, event2], res)
+
+    @gen_test
+    def test_run_in_executor_native(self):
+        event1 = threading.Event()
+        event2 = threading.Event()
+
+        def sync_func(self_event, other_event):
+            self_event.set()
+            other_event.wait()
+            return self_event
+
+        # Go through an async wrapper to ensure that the result of
+        # run_in_executor works with await and not just gen.coroutine
+        # (simply passing the underlying concurrent future would do that).
+        async def async_wrapper(self_event, other_event):
+            return await IOLoop.current().run_in_executor(
+                None, sync_func, self_event, other_event
+            )
+
+        res = yield [async_wrapper(event1, event2), async_wrapper(event2, event1)]
+
+        self.assertEqual([event1, event2], res)
+
+    @gen_test
+    def test_set_default_executor(self):
+        count = [0]
+
+        class MyExecutor(futures.ThreadPoolExecutor):
+            def submit(self, func, *args):
+                count[0] += 1
+                return super().submit(func, *args)
+
+        event = threading.Event()
+
+        def sync_func():
+            event.set()
+
+        executor = MyExecutor(1)
+        loop = IOLoop.current()
+        loop.set_default_executor(executor)
+        yield loop.run_in_executor(None, sync_func)
+        self.assertEqual(1, count[0])
+        self.assertTrue(event.is_set())
+
+
+class TestIOLoopRunSync(unittest.TestCase):
+    def setUp(self):
+        self.io_loop = IOLoop()
+
+    def tearDown(self):
+        self.io_loop.close()
+
+    def test_sync_result(self):
+        with self.assertRaises(gen.BadYieldError):
+            self.io_loop.run_sync(lambda: 42)
+
+    def test_sync_exception(self):
+        with self.assertRaises(ZeroDivisionError):
+            self.io_loop.run_sync(lambda: 1 / 0)
+
+    def test_async_result(self):
+        @gen.coroutine
+        def f():
+            yield gen.moment
+            raise gen.Return(42)
+
+        self.assertEqual(self.io_loop.run_sync(f), 42)
+
+    def test_async_exception(self):
+        @gen.coroutine
+        def f():
+            yield gen.moment
+            1 / 0
+
+        with self.assertRaises(ZeroDivisionError):
+            self.io_loop.run_sync(f)
+
+    def test_current(self):
+        def f():
+            self.assertIs(IOLoop.current(), self.io_loop)
+
+        self.io_loop.run_sync(f)
+
+    def test_timeout(self):
+        @gen.coroutine
+        def f():
+            yield gen.sleep(1)
+
+        self.assertRaises(TimeoutError, self.io_loop.run_sync, f, timeout=0.01)
+
+    def test_native_coroutine(self):
+        @gen.coroutine
+        def f1():
+            yield gen.moment
+
+        async def f2():
+            await f1()
+
+        self.io_loop.run_sync(f2)
+
+
+class TestPeriodicCallbackMath(unittest.TestCase):
+    def simulate_calls(self, pc, durations):
+        """Simulate a series of calls to the PeriodicCallback.
+
+        Pass a list of call durations in seconds (negative values
+        work to simulate clock adjustments during the call, or more or
+        less equivalently, between calls). This method returns the
+        times at which each call would be made.
+        """
+        calls = []
+        now = 1000
+        pc._next_timeout = now
+        for d in durations:
+            pc._update_next(now)
+            calls.append(pc._next_timeout)
+            now = pc._next_timeout + d
+        return calls
+
+    def dummy(self):
+        pass
+
+    def test_basic(self):
+        pc = PeriodicCallback(self.dummy, 10000)
+        self.assertEqual(
+            self.simulate_calls(pc, [0] * 5), [1010, 1020, 1030, 1040, 1050]
+        )
+
+    def test_overrun(self):
+        # If a call runs for too long, we skip entire cycles to get
+        # back on schedule.
+        call_durations = [9, 9, 10, 11, 20, 20, 35, 35, 0, 0, 0]
+        expected = [
+            1010,
+            1020,
+            1030,  # first 3 calls on schedule
+            1050,
+            1070,  # next 2 delayed one cycle
+            1100,
+            1130,  # next 2 delayed 2 cycles
+            1170,
+            1210,  # next 2 delayed 3 cycles
+            1220,
+            1230,  # then back on schedule.
+        ]
+
+        pc = PeriodicCallback(self.dummy, 10000)
+        self.assertEqual(self.simulate_calls(pc, call_durations), expected)
+
+    def test_clock_backwards(self):
+        pc = PeriodicCallback(self.dummy, 10000)
+        # Backwards jumps are ignored, potentially resulting in a
+        # slightly slow schedule (although we assume that when
+        # time.time() and time.monotonic() are different, time.time()
+        # is getting adjusted by NTP and is therefore more accurate)
+        self.assertEqual(
+            self.simulate_calls(pc, [-2, -1, -3, -2, 0]), [1010, 1020, 1030, 1040, 1050]
+        )
+
+        # For big jumps, we should perhaps alter the schedule, but we
+        # don't currently. This trace shows that we run callbacks
+        # every 10s of time.time(), but the first and second calls are
+        # 110s of real time apart because the backwards jump is
+        # ignored.
+        self.assertEqual(self.simulate_calls(pc, [-100, 0, 0]), [1010, 1020, 1030])
+
+    def test_jitter(self):
+        random_times = [0.5, 1, 0, 0.75]
+        expected = [1010, 1022.5, 1030, 1041.25]
+        call_durations = [0] * len(random_times)
+        pc = PeriodicCallback(self.dummy, 10000, jitter=0.5)
+
+        def mock_random():
+            return random_times.pop(0)
+
+        with mock.patch("random.random", mock_random):
+            self.assertEqual(self.simulate_calls(pc, call_durations), expected)
+
+
+class TestIOLoopConfiguration(unittest.TestCase):
+    def run_python(self, *statements):
+        stmt_list = [
+            "from tornado.ioloop import IOLoop",
+            "classname = lambda x: x.__class__.__name__",
+        ] + list(statements)
+        args = [sys.executable, "-c", "; ".join(stmt_list)]
+        return native_str(subprocess.check_output(args)).strip()
+
+    def test_default(self):
+        # When asyncio is available, it is used by default.
+        cls = self.run_python("print(classname(IOLoop.current()))")
+        self.assertEqual(cls, "AsyncIOMainLoop")
+        cls = self.run_python("print(classname(IOLoop()))")
+        self.assertEqual(cls, "AsyncIOLoop")
+
+    def test_asyncio(self):
+        cls = self.run_python(
+            'IOLoop.configure("tornado.platform.asyncio.AsyncIOLoop")',
+            "print(classname(IOLoop.current()))",
+        )
+        self.assertEqual(cls, "AsyncIOMainLoop")
+
+    def test_asyncio_main(self):
+        cls = self.run_python(
+            "from tornado.platform.asyncio import AsyncIOMainLoop",
+            "AsyncIOMainLoop().install()",
+            "print(classname(IOLoop.current()))",
+        )
+        self.assertEqual(cls, "AsyncIOMainLoop")
+
+
+if __name__ == "__main__":
+    unittest.main()

.venv/Lib/site-packages/tornado/test/locale_test.py

@@ -0,0 +1,151 @@
+import datetime
+import os
+import shutil
+import tempfile
+import unittest
+
+import tornado.locale
+from tornado.escape import utf8, to_unicode
+from tornado.util import unicode_type
+
+
+class TranslationLoaderTest(unittest.TestCase):
+    # TODO: less hacky way to get isolated tests
+    SAVE_VARS = ["_translations", "_supported_locales", "_use_gettext"]
+
+    def clear_locale_cache(self):
+        tornado.locale.Locale._cache = {}
+
+    def setUp(self):
+        self.saved = {}  # type: dict
+        for var in TranslationLoaderTest.SAVE_VARS:
+            self.saved[var] = getattr(tornado.locale, var)
+        self.clear_locale_cache()
+
+    def tearDown(self):
+        for k, v in self.saved.items():
+            setattr(tornado.locale, k, v)
+        self.clear_locale_cache()
+
+    def test_csv(self):
+        tornado.locale.load_translations(
+            os.path.join(os.path.dirname(__file__), "csv_translations")
+        )
+        locale = tornado.locale.get("fr_FR")
+        self.assertTrue(isinstance(locale, tornado.locale.CSVLocale))
+        self.assertEqual(locale.translate("school"), u"\u00e9cole")
+
+    def test_csv_bom(self):
+        with open(
+            os.path.join(os.path.dirname(__file__), "csv_translations", "fr_FR.csv"),
+            "rb",
+        ) as f:
+            char_data = to_unicode(f.read())
+        # Re-encode our input data (which is utf-8 without BOM) in
+        # encodings that use the BOM and ensure that we can still load
+        # it. Note that utf-16-le and utf-16-be do not write a BOM,
+        # so we only test whichver variant is native to our platform.
+        for encoding in ["utf-8-sig", "utf-16"]:
+            tmpdir = tempfile.mkdtemp()
+            try:
+                with open(os.path.join(tmpdir, "fr_FR.csv"), "wb") as f:
+                    f.write(char_data.encode(encoding))
+                tornado.locale.load_translations(tmpdir)
+                locale = tornado.locale.get("fr_FR")
+                self.assertIsInstance(locale, tornado.locale.CSVLocale)
+                self.assertEqual(locale.translate("school"), u"\u00e9cole")
+            finally:
+                shutil.rmtree(tmpdir)
+
+    def test_gettext(self):
+        tornado.locale.load_gettext_translations(
+            os.path.join(os.path.dirname(__file__), "gettext_translations"),
+            "tornado_test",
+        )
+        locale = tornado.locale.get("fr_FR")
+        self.assertTrue(isinstance(locale, tornado.locale.GettextLocale))
+        self.assertEqual(locale.translate("school"), u"\u00e9cole")
+        self.assertEqual(locale.pgettext("law", "right"), u"le droit")
+        self.assertEqual(locale.pgettext("good", "right"), u"le bien")
+        self.assertEqual(
+            locale.pgettext("organization", "club", "clubs", 1), u"le club"
+        )
+        self.assertEqual(
+            locale.pgettext("organization", "club", "clubs", 2), u"les clubs"
+        )
+        self.assertEqual(locale.pgettext("stick", "club", "clubs", 1), u"le b\xe2ton")
+        self.assertEqual(locale.pgettext("stick", "club", "clubs", 2), u"les b\xe2tons")
+
+
+class LocaleDataTest(unittest.TestCase):
+    def test_non_ascii_name(self):
+        name = tornado.locale.LOCALE_NAMES["es_LA"]["name"]
+        self.assertTrue(isinstance(name, unicode_type))
+        self.assertEqual(name, u"Espa\u00f1ol")
+        self.assertEqual(utf8(name), b"Espa\xc3\xb1ol")
+
+
+class EnglishTest(unittest.TestCase):
+    def test_format_date(self):
+        locale = tornado.locale.get("en_US")
+        date = datetime.datetime(2013, 4, 28, 18, 35)
+        self.assertEqual(
+            locale.format_date(date, full_format=True), "April 28, 2013 at 6:35 pm"
+        )
+
+        now = datetime.datetime.utcnow()
+
+        self.assertEqual(
+            locale.format_date(now - datetime.timedelta(seconds=2), full_format=False),
+            "2 seconds ago",
+        )
+        self.assertEqual(
+            locale.format_date(now - datetime.timedelta(minutes=2), full_format=False),
+            "2 minutes ago",
+        )
+        self.assertEqual(
+            locale.format_date(now - datetime.timedelta(hours=2), full_format=False),
+            "2 hours ago",
+        )
+
+        self.assertEqual(
+            locale.format_date(
+                now - datetime.timedelta(days=1), full_format=False, shorter=True
+            ),
+            "yesterday",
+        )
+
+        date = now - datetime.timedelta(days=2)
+        self.assertEqual(
+            locale.format_date(date, full_format=False, shorter=True),
+            locale._weekdays[date.weekday()],
+        )
+
+        date = now - datetime.timedelta(days=300)
+        self.assertEqual(
+            locale.format_date(date, full_format=False, shorter=True),
+            "%s %d" % (locale._months[date.month - 1], date.day),
+        )
+
+        date = now - datetime.timedelta(days=500)
+        self.assertEqual(
+            locale.format_date(date, full_format=False, shorter=True),
+            "%s %d, %d" % (locale._months[date.month - 1], date.day, date.year),
+        )
+
+    def test_friendly_number(self):
+        locale = tornado.locale.get("en_US")
+        self.assertEqual(locale.friendly_number(1000000), "1,000,000")
+
+    def test_list(self):
+        locale = tornado.locale.get("en_US")
+        self.assertEqual(locale.list([]), "")
+        self.assertEqual(locale.list(["A"]), "A")
+        self.assertEqual(locale.list(["A", "B"]), "A and B")
+        self.assertEqual(locale.list(["A", "B", "C"]), "A, B and C")
+
+    def test_format_day(self):
+        locale = tornado.locale.get("en_US")
+        date = datetime.datetime(2013, 4, 28, 18, 35)
+        self.assertEqual(locale.format_day(date=date, dow=True), "Sunday, April 28")
+        self.assertEqual(locale.format_day(date=date, dow=False), "April 28")

.venv/Lib/site-packages/tornado/test/locks_test.py

@@ -0,0 +1,535 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import asyncio
+from datetime import timedelta
+import typing  # noqa: F401
+import unittest
+
+from tornado import gen, locks
+from tornado.gen import TimeoutError
+from tornado.testing import gen_test, AsyncTestCase
+
+
+class ConditionTest(AsyncTestCase):
+    def setUp(self):
+        super().setUp()
+        self.history = []  # type: typing.List[typing.Union[int, str]]
+
+    def record_done(self, future, key):
+        """Record the resolution of a Future returned by Condition.wait."""
+
+        def callback(_):
+            if not future.result():
+                # wait() resolved to False, meaning it timed out.
+                self.history.append("timeout")
+            else:
+                self.history.append(key)
+
+        future.add_done_callback(callback)
+
+    def loop_briefly(self):
+        """Run all queued callbacks on the IOLoop.
+
+        In these tests, this method is used after calling notify() to
+        preserve the pre-5.0 behavior in which callbacks ran
+        synchronously.
+        """
+        self.io_loop.add_callback(self.stop)
+        self.wait()
+
+    def test_repr(self):
+        c = locks.Condition()
+        self.assertIn("Condition", repr(c))
+        self.assertNotIn("waiters", repr(c))
+        c.wait()
+        self.assertIn("waiters", repr(c))
+
+    @gen_test
+    def test_notify(self):
+        c = locks.Condition()
+        self.io_loop.call_later(0.01, c.notify)
+        yield c.wait()
+
+    def test_notify_1(self):
+        c = locks.Condition()
+        self.record_done(c.wait(), "wait1")
+        self.record_done(c.wait(), "wait2")
+        c.notify(1)
+        self.loop_briefly()
+        self.history.append("notify1")
+        c.notify(1)
+        self.loop_briefly()
+        self.history.append("notify2")
+        self.assertEqual(["wait1", "notify1", "wait2", "notify2"], self.history)
+
+    def test_notify_n(self):
+        c = locks.Condition()
+        for i in range(6):
+            self.record_done(c.wait(), i)
+
+        c.notify(3)
+        self.loop_briefly()
+
+        # Callbacks execute in the order they were registered.
+        self.assertEqual(list(range(3)), self.history)
+        c.notify(1)
+        self.loop_briefly()
+        self.assertEqual(list(range(4)), self.history)
+        c.notify(2)
+        self.loop_briefly()
+        self.assertEqual(list(range(6)), self.history)
+
+    def test_notify_all(self):
+        c = locks.Condition()
+        for i in range(4):
+            self.record_done(c.wait(), i)
+
+        c.notify_all()
+        self.loop_briefly()
+        self.history.append("notify_all")
+
+        # Callbacks execute in the order they were registered.
+        self.assertEqual(list(range(4)) + ["notify_all"], self.history)  # type: ignore
+
+    @gen_test
+    def test_wait_timeout(self):
+        c = locks.Condition()
+        wait = c.wait(timedelta(seconds=0.01))
+        self.io_loop.call_later(0.02, c.notify)  # Too late.
+        yield gen.sleep(0.03)
+        self.assertFalse((yield wait))
+
+    @gen_test
+    def test_wait_timeout_preempted(self):
+        c = locks.Condition()
+
+        # This fires before the wait times out.
+        self.io_loop.call_later(0.01, c.notify)
+        wait = c.wait(timedelta(seconds=0.02))
+        yield gen.sleep(0.03)
+        yield wait  # No TimeoutError.
+
+    @gen_test
+    def test_notify_n_with_timeout(self):
+        # Register callbacks 0, 1, 2, and 3. Callback 1 has a timeout.
+        # Wait for that timeout to expire, then do notify(2) and make
+        # sure everyone runs. Verifies that a timed-out callback does
+        # not count against the 'n' argument to notify().
+        c = locks.Condition()
+        self.record_done(c.wait(), 0)
+        self.record_done(c.wait(timedelta(seconds=0.01)), 1)
+        self.record_done(c.wait(), 2)
+        self.record_done(c.wait(), 3)
+
+        # Wait for callback 1 to time out.
+        yield gen.sleep(0.02)
+        self.assertEqual(["timeout"], self.history)
+
+        c.notify(2)
+        yield gen.sleep(0.01)
+        self.assertEqual(["timeout", 0, 2], self.history)
+        self.assertEqual(["timeout", 0, 2], self.history)
+        c.notify()
+        yield
+        self.assertEqual(["timeout", 0, 2, 3], self.history)
+
+    @gen_test
+    def test_notify_all_with_timeout(self):
+        c = locks.Condition()
+        self.record_done(c.wait(), 0)
+        self.record_done(c.wait(timedelta(seconds=0.01)), 1)
+        self.record_done(c.wait(), 2)
+
+        # Wait for callback 1 to time out.
+        yield gen.sleep(0.02)
+        self.assertEqual(["timeout"], self.history)
+
+        c.notify_all()
+        yield
+        self.assertEqual(["timeout", 0, 2], self.history)
+
+    @gen_test
+    def test_nested_notify(self):
+        # Ensure no notifications lost, even if notify() is reentered by a
+        # waiter calling notify().
+        c = locks.Condition()
+
+        # Three waiters.
+        futures = [asyncio.ensure_future(c.wait()) for _ in range(3)]
+
+        # First and second futures resolved. Second future reenters notify(),
+        # resolving third future.
+        futures[1].add_done_callback(lambda _: c.notify())
+        c.notify(2)
+        yield
+        self.assertTrue(all(f.done() for f in futures))
+
+    @gen_test
+    def test_garbage_collection(self):
+        # Test that timed-out waiters are occasionally cleaned from the queue.
+        c = locks.Condition()
+        for _ in range(101):
+            c.wait(timedelta(seconds=0.01))
+
+        future = asyncio.ensure_future(c.wait())
+        self.assertEqual(102, len(c._waiters))
+
+        # Let first 101 waiters time out, triggering a collection.
+        yield gen.sleep(0.02)
+        self.assertEqual(1, len(c._waiters))
+
+        # Final waiter is still active.
+        self.assertFalse(future.done())
+        c.notify()
+        self.assertTrue(future.done())
+
+
+class EventTest(AsyncTestCase):
+    def test_repr(self):
+        event = locks.Event()
+        self.assertTrue("clear" in str(event))
+        self.assertFalse("set" in str(event))
+        event.set()
+        self.assertFalse("clear" in str(event))
+        self.assertTrue("set" in str(event))
+
+    def test_event(self):
+        e = locks.Event()
+        future_0 = asyncio.ensure_future(e.wait())
+        e.set()
+        future_1 = asyncio.ensure_future(e.wait())
+        e.clear()
+        future_2 = asyncio.ensure_future(e.wait())
+
+        self.assertTrue(future_0.done())
+        self.assertTrue(future_1.done())
+        self.assertFalse(future_2.done())
+
+    @gen_test
+    def test_event_timeout(self):
+        e = locks.Event()
+        with self.assertRaises(TimeoutError):
+            yield e.wait(timedelta(seconds=0.01))
+
+        # After a timed-out waiter, normal operation works.
+        self.io_loop.add_timeout(timedelta(seconds=0.01), e.set)
+        yield e.wait(timedelta(seconds=1))
+
+    def test_event_set_multiple(self):
+        e = locks.Event()
+        e.set()
+        e.set()
+        self.assertTrue(e.is_set())
+
+    def test_event_wait_clear(self):
+        e = locks.Event()
+        f0 = asyncio.ensure_future(e.wait())
+        e.clear()
+        f1 = asyncio.ensure_future(e.wait())
+        e.set()
+        self.assertTrue(f0.done())
+        self.assertTrue(f1.done())
+
+
+class SemaphoreTest(AsyncTestCase):
+    def test_negative_value(self):
+        self.assertRaises(ValueError, locks.Semaphore, value=-1)
+
+    def test_repr(self):
+        sem = locks.Semaphore()
+        self.assertIn("Semaphore", repr(sem))
+        self.assertIn("unlocked,value:1", repr(sem))
+        sem.acquire()
+        self.assertIn("locked", repr(sem))
+        self.assertNotIn("waiters", repr(sem))
+        sem.acquire()
+        self.assertIn("waiters", repr(sem))
+
+    def test_acquire(self):
+        sem = locks.Semaphore()
+        f0 = asyncio.ensure_future(sem.acquire())
+        self.assertTrue(f0.done())
+
+        # Wait for release().
+        f1 = asyncio.ensure_future(sem.acquire())
+        self.assertFalse(f1.done())
+        f2 = asyncio.ensure_future(sem.acquire())
+        sem.release()
+        self.assertTrue(f1.done())
+        self.assertFalse(f2.done())
+        sem.release()
+        self.assertTrue(f2.done())
+
+        sem.release()
+        # Now acquire() is instant.
+        self.assertTrue(asyncio.ensure_future(sem.acquire()).done())
+        self.assertEqual(0, len(sem._waiters))
+
+    @gen_test
+    def test_acquire_timeout(self):
+        sem = locks.Semaphore(2)
+        yield sem.acquire()
+        yield sem.acquire()
+        acquire = sem.acquire(timedelta(seconds=0.01))
+        self.io_loop.call_later(0.02, sem.release)  # Too late.
+        yield gen.sleep(0.3)
+        with self.assertRaises(gen.TimeoutError):
+            yield acquire
+
+        sem.acquire()
+        f = asyncio.ensure_future(sem.acquire())
+        self.assertFalse(f.done())
+        sem.release()
+        self.assertTrue(f.done())
+
+    @gen_test
+    def test_acquire_timeout_preempted(self):
+        sem = locks.Semaphore(1)
+        yield sem.acquire()
+
+        # This fires before the wait times out.
+        self.io_loop.call_later(0.01, sem.release)
+        acquire = sem.acquire(timedelta(seconds=0.02))
+        yield gen.sleep(0.03)
+        yield acquire  # No TimeoutError.
+
+    def test_release_unacquired(self):
+        # Unbounded releases are allowed, and increment the semaphore's value.
+        sem = locks.Semaphore()
+        sem.release()
+        sem.release()
+
+        # Now the counter is 3. We can acquire three times before blocking.
+        self.assertTrue(asyncio.ensure_future(sem.acquire()).done())
+        self.assertTrue(asyncio.ensure_future(sem.acquire()).done())
+        self.assertTrue(asyncio.ensure_future(sem.acquire()).done())
+        self.assertFalse(asyncio.ensure_future(sem.acquire()).done())
+
+    @gen_test
+    def test_garbage_collection(self):
+        # Test that timed-out waiters are occasionally cleaned from the queue.
+        sem = locks.Semaphore(value=0)
+        futures = [
+            asyncio.ensure_future(sem.acquire(timedelta(seconds=0.01)))
+            for _ in range(101)
+        ]
+
+        future = asyncio.ensure_future(sem.acquire())
+        self.assertEqual(102, len(sem._waiters))
+
+        # Let first 101 waiters time out, triggering a collection.
+        yield gen.sleep(0.02)
+        self.assertEqual(1, len(sem._waiters))
+
+        # Final waiter is still active.
+        self.assertFalse(future.done())
+        sem.release()
+        self.assertTrue(future.done())
+
+        # Prevent "Future exception was never retrieved" messages.
+        for future in futures:
+            self.assertRaises(TimeoutError, future.result)
+
+
+class SemaphoreContextManagerTest(AsyncTestCase):
+    @gen_test
+    def test_context_manager(self):
+        sem = locks.Semaphore()
+        with (yield sem.acquire()) as yielded:
+            self.assertTrue(yielded is None)
+
+        # Semaphore was released and can be acquired again.
+        self.assertTrue(asyncio.ensure_future(sem.acquire()).done())
+
+    @gen_test
+    def test_context_manager_async_await(self):
+        # Repeat the above test using 'async with'.
+        sem = locks.Semaphore()
+
+        async def f():
+            async with sem as yielded:
+                self.assertTrue(yielded is None)
+
+        yield f()
+
+        # Semaphore was released and can be acquired again.
+        self.assertTrue(asyncio.ensure_future(sem.acquire()).done())
+
+    @gen_test
+    def test_context_manager_exception(self):
+        sem = locks.Semaphore()
+        with self.assertRaises(ZeroDivisionError):
+            with (yield sem.acquire()):
+                1 / 0
+
+        # Semaphore was released and can be acquired again.
+        self.assertTrue(asyncio.ensure_future(sem.acquire()).done())
+
+    @gen_test
+    def test_context_manager_timeout(self):
+        sem = locks.Semaphore()
+        with (yield sem.acquire(timedelta(seconds=0.01))):
+            pass
+
+        # Semaphore was released and can be acquired again.
+        self.assertTrue(asyncio.ensure_future(sem.acquire()).done())
+
+    @gen_test
+    def test_context_manager_timeout_error(self):
+        sem = locks.Semaphore(value=0)
+        with self.assertRaises(gen.TimeoutError):
+            with (yield sem.acquire(timedelta(seconds=0.01))):
+                pass
+
+        # Counter is still 0.
+        self.assertFalse(asyncio.ensure_future(sem.acquire()).done())
+
+    @gen_test
+    def test_context_manager_contended(self):
+        sem = locks.Semaphore()
+        history = []
+
+        @gen.coroutine
+        def f(index):
+            with (yield sem.acquire()):
+                history.append("acquired %d" % index)
+                yield gen.sleep(0.01)
+                history.append("release %d" % index)
+
+        yield [f(i) for i in range(2)]
+
+        expected_history = []
+        for i in range(2):
+            expected_history.extend(["acquired %d" % i, "release %d" % i])
+
+        self.assertEqual(expected_history, history)
+
+    @gen_test
+    def test_yield_sem(self):
+        # Ensure we catch a "with (yield sem)", which should be
+        # "with (yield sem.acquire())".
+        with self.assertRaises(gen.BadYieldError):
+            with (yield locks.Semaphore()):
+                pass
+
+    def test_context_manager_misuse(self):
+        # Ensure we catch a "with sem", which should be
+        # "with (yield sem.acquire())".
+        with self.assertRaises(RuntimeError):
+            with locks.Semaphore():
+                pass
+
+
+class BoundedSemaphoreTest(AsyncTestCase):
+    def test_release_unacquired(self):
+        sem = locks.BoundedSemaphore()
+        self.assertRaises(ValueError, sem.release)
+        # Value is 0.
+        sem.acquire()
+        # Block on acquire().
+        future = asyncio.ensure_future(sem.acquire())
+        self.assertFalse(future.done())
+        sem.release()
+        self.assertTrue(future.done())
+        # Value is 1.
+        sem.release()
+        self.assertRaises(ValueError, sem.release)
+
+
+class LockTests(AsyncTestCase):
+    def test_repr(self):
+        lock = locks.Lock()
+        # No errors.
+        repr(lock)
+        lock.acquire()
+        repr(lock)
+
+    def test_acquire_release(self):
+        lock = locks.Lock()
+        self.assertTrue(asyncio.ensure_future(lock.acquire()).done())
+        future = asyncio.ensure_future(lock.acquire())
+        self.assertFalse(future.done())
+        lock.release()
+        self.assertTrue(future.done())
+
+    @gen_test
+    def test_acquire_fifo(self):
+        lock = locks.Lock()
+        self.assertTrue(asyncio.ensure_future(lock.acquire()).done())
+        N = 5
+        history = []
+
+        @gen.coroutine
+        def f(idx):
+            with (yield lock.acquire()):
+                history.append(idx)
+
+        futures = [f(i) for i in range(N)]
+        self.assertFalse(any(future.done() for future in futures))
+        lock.release()
+        yield futures
+        self.assertEqual(list(range(N)), history)
+
+    @gen_test
+    def test_acquire_fifo_async_with(self):
+        # Repeat the above test using `async with lock:`
+        # instead of `with (yield lock.acquire()):`.
+        lock = locks.Lock()
+        self.assertTrue(asyncio.ensure_future(lock.acquire()).done())
+        N = 5
+        history = []
+
+        async def f(idx):
+            async with lock:
+                history.append(idx)
+
+        futures = [f(i) for i in range(N)]
+        lock.release()
+        yield futures
+        self.assertEqual(list(range(N)), history)
+
+    @gen_test
+    def test_acquire_timeout(self):
+        lock = locks.Lock()
+        lock.acquire()
+        with self.assertRaises(gen.TimeoutError):
+            yield lock.acquire(timeout=timedelta(seconds=0.01))
+
+        # Still locked.
+        self.assertFalse(asyncio.ensure_future(lock.acquire()).done())
+
+    def test_multi_release(self):
+        lock = locks.Lock()
+        self.assertRaises(RuntimeError, lock.release)
+        lock.acquire()
+        lock.release()
+        self.assertRaises(RuntimeError, lock.release)
+
+    @gen_test
+    def test_yield_lock(self):
+        # Ensure we catch a "with (yield lock)", which should be
+        # "with (yield lock.acquire())".
+        with self.assertRaises(gen.BadYieldError):
+            with (yield locks.Lock()):
+                pass
+
+    def test_context_manager_misuse(self):
+        # Ensure we catch a "with lock", which should be
+        # "with (yield lock.acquire())".
+        with self.assertRaises(RuntimeError):
+            with locks.Lock():
+                pass
+
+
+if __name__ == "__main__":
+    unittest.main()

.venv/Lib/site-packages/tornado/test/log_test.py

@@ -0,0 +1,245 @@
+#
+# Copyright 2012 Facebook
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+import contextlib
+import glob
+import logging
+import os
+import re
+import subprocess
+import sys
+import tempfile
+import unittest
+import warnings
+
+from tornado.escape import utf8
+from tornado.log import LogFormatter, define_logging_options, enable_pretty_logging
+from tornado.options import OptionParser
+from tornado.util import basestring_type
+
+
+@contextlib.contextmanager
+def ignore_bytes_warning():
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore", category=BytesWarning)
+        yield
+
+
+class LogFormatterTest(unittest.TestCase):
+    # Matches the output of a single logging call (which may be multiple lines
+    # if a traceback was included, so we use the DOTALL option)
+    LINE_RE = re.compile(
+        b"(?s)\x01\\[E [0-9]{6} [0-9]{2}:[0-9]{2}:[0-9]{2} log_test:[0-9]+\\]\x02 (.*)"
+    )
+
+    def setUp(self):
+        self.formatter = LogFormatter(color=False)
+        # Fake color support.  We can't guarantee anything about the $TERM
+        # variable when the tests are run, so just patch in some values
+        # for testing.  (testing with color off fails to expose some potential
+        # encoding issues from the control characters)
+        self.formatter._colors = {logging.ERROR: u"\u0001"}
+        self.formatter._normal = u"\u0002"
+        # construct a Logger directly to bypass getLogger's caching
+        self.logger = logging.Logger("LogFormatterTest")
+        self.logger.propagate = False
+        self.tempdir = tempfile.mkdtemp()
+        self.filename = os.path.join(self.tempdir, "log.out")
+        self.handler = self.make_handler(self.filename)
+        self.handler.setFormatter(self.formatter)
+        self.logger.addHandler(self.handler)
+
+    def tearDown(self):
+        self.handler.close()
+        os.unlink(self.filename)
+        os.rmdir(self.tempdir)
+
+    def make_handler(self, filename):
+        # Base case: default setup without explicit encoding.
+        # In python 2, supports arbitrary byte strings and unicode objects
+        # that contain only ascii.  In python 3, supports ascii-only unicode
+        # strings (but byte strings will be repr'd automatically).
+        return logging.FileHandler(filename)
+
+    def get_output(self):
+        with open(self.filename, "rb") as f:
+            line = f.read().strip()
+            m = LogFormatterTest.LINE_RE.match(line)
+            if m:
+                return m.group(1)
+            else:
+                raise Exception("output didn't match regex: %r" % line)
+
+    def test_basic_logging(self):
+        self.logger.error("foo")
+        self.assertEqual(self.get_output(), b"foo")
+
+    def test_bytes_logging(self):
+        with ignore_bytes_warning():
+            # This will be "\xe9" on python 2 or "b'\xe9'" on python 3
+            self.logger.error(b"\xe9")
+            self.assertEqual(self.get_output(), utf8(repr(b"\xe9")))
+
+    def test_utf8_logging(self):
+        with ignore_bytes_warning():
+            self.logger.error(u"\u00e9".encode("utf8"))
+        if issubclass(bytes, basestring_type):
+            # on python 2, utf8 byte strings (and by extension ascii byte
+            # strings) are passed through as-is.
+            self.assertEqual(self.get_output(), utf8(u"\u00e9"))
+        else:
+            # on python 3, byte strings always get repr'd even if
+            # they're ascii-only, so this degenerates into another
+            # copy of test_bytes_logging.
+            self.assertEqual(self.get_output(), utf8(repr(utf8(u"\u00e9"))))
+
+    def test_bytes_exception_logging(self):
+        try:
+            raise Exception(b"\xe9")
+        except Exception:
+            self.logger.exception("caught exception")
+        # This will be "Exception: \xe9" on python 2 or
+        # "Exception: b'\xe9'" on python 3.
+        output = self.get_output()
+        self.assertRegexpMatches(output, br"Exception.*\\xe9")
+        # The traceback contains newlines, which should not have been escaped.
+        self.assertNotIn(br"\n", output)
+
+
+class UnicodeLogFormatterTest(LogFormatterTest):
+    def make_handler(self, filename):
+        # Adding an explicit encoding configuration allows non-ascii unicode
+        # strings in both python 2 and 3, without changing the behavior
+        # for byte strings.
+        return logging.FileHandler(filename, encoding="utf8")
+
+    def test_unicode_logging(self):
+        self.logger.error(u"\u00e9")
+        self.assertEqual(self.get_output(), utf8(u"\u00e9"))
+
+
+class EnablePrettyLoggingTest(unittest.TestCase):
+    def setUp(self):
+        super().setUp()
+        self.options = OptionParser()
+        define_logging_options(self.options)
+        self.logger = logging.Logger("tornado.test.log_test.EnablePrettyLoggingTest")
+        self.logger.propagate = False
+
+    def test_log_file(self):
+        tmpdir = tempfile.mkdtemp()
+        try:
+            self.options.log_file_prefix = tmpdir + "/test_log"
+            enable_pretty_logging(options=self.options, logger=self.logger)
+            self.assertEqual(1, len(self.logger.handlers))
+            self.logger.error("hello")
+            self.logger.handlers[0].flush()
+            filenames = glob.glob(tmpdir + "/test_log*")
+            self.assertEqual(1, len(filenames))
+            with open(filenames[0]) as f:
+                self.assertRegexpMatches(f.read(), r"^\[E [^]]*\] hello$")
+        finally:
+            for handler in self.logger.handlers:
+                handler.flush()
+                handler.close()
+            for filename in glob.glob(tmpdir + "/test_log*"):
+                os.unlink(filename)
+            os.rmdir(tmpdir)
+
+    def test_log_file_with_timed_rotating(self):
+        tmpdir = tempfile.mkdtemp()
+        try:
+            self.options.log_file_prefix = tmpdir + "/test_log"
+            self.options.log_rotate_mode = "time"
+            enable_pretty_logging(options=self.options, logger=self.logger)
+            self.logger.error("hello")
+            self.logger.handlers[0].flush()
+            filenames = glob.glob(tmpdir + "/test_log*")
+            self.assertEqual(1, len(filenames))
+            with open(filenames[0]) as f:
+                self.assertRegexpMatches(f.read(), r"^\[E [^]]*\] hello$")
+        finally:
+            for handler in self.logger.handlers:
+                handler.flush()
+                handler.close()
+            for filename in glob.glob(tmpdir + "/test_log*"):
+                os.unlink(filename)
+            os.rmdir(tmpdir)
+
+    def test_wrong_rotate_mode_value(self):
+        try:
+            self.options.log_file_prefix = "some_path"
+            self.options.log_rotate_mode = "wrong_mode"
+            self.assertRaises(
+                ValueError,
+                enable_pretty_logging,
+                options=self.options,
+                logger=self.logger,
+            )
+        finally:
+            for handler in self.logger.handlers:
+                handler.flush()
+                handler.close()
+
+
+class LoggingOptionTest(unittest.TestCase):
+    """Test the ability to enable and disable Tornado's logging hooks."""
+
+    def logs_present(self, statement, args=None):
+        # Each test may manipulate and/or parse the options and then logs
+        # a line at the 'info' level.  This level is ignored in the
+        # logging module by default, but Tornado turns it on by default
+        # so it is the easiest way to tell whether tornado's logging hooks
+        # ran.
+        IMPORT = "from tornado.options import options, parse_command_line"
+        LOG_INFO = 'import logging; logging.info("hello")'
+        program = ";".join([IMPORT, statement, LOG_INFO])
+        proc = subprocess.Popen(
+            [sys.executable, "-c", program] + (args or []),
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+        )
+        stdout, stderr = proc.communicate()
+        self.assertEqual(proc.returncode, 0, "process failed: %r" % stdout)
+        return b"hello" in stdout
+
+    def test_default(self):
+        self.assertFalse(self.logs_present("pass"))
+
+    def test_tornado_default(self):
+        self.assertTrue(self.logs_present("parse_command_line()"))
+
+    def test_disable_command_line(self):
+        self.assertFalse(self.logs_present("parse_command_line()", ["--logging=none"]))
+
+    def test_disable_command_line_case_insensitive(self):
+        self.assertFalse(self.logs_present("parse_command_line()", ["--logging=None"]))
+
+    def test_disable_code_string(self):
+        self.assertFalse(
+            self.logs_present('options.logging = "none"; parse_command_line()')
+        )
+
+    def test_disable_code_none(self):
+        self.assertFalse(
+            self.logs_present("options.logging = None; parse_command_line()")
+        )
+
+    def test_disable_override(self):
+        # command line trumps code defaults
+        self.assertTrue(
+            self.logs_present(
+                "options.logging = None; parse_command_line()", ["--logging=info"]
+            )
+        )

.venv/Lib/site-packages/tornado/test/netutil_test.py

@@ -0,0 +1,233 @@
+import errno
+import os
+import signal
+import socket
+from subprocess import Popen
+import sys
+import time
+import unittest
+
+from tornado.netutil import (
+    BlockingResolver,
+    OverrideResolver,
+    ThreadedResolver,
+    is_valid_ip,
+    bind_sockets,
+)
+from tornado.testing import AsyncTestCase, gen_test, bind_unused_port
+from tornado.test.util import skipIfNoNetwork
+
+import typing
+
+if typing.TYPE_CHECKING:
+    from typing import List  # noqa: F401
+
+try:
+    import pycares  # type: ignore
+except ImportError:
+    pycares = None
+else:
+    from tornado.platform.caresresolver import CaresResolver
+
+try:
+    import twisted  # type: ignore
+    import twisted.names  # type: ignore
+except ImportError:
+    twisted = None
+else:
+    from tornado.platform.twisted import TwistedResolver
+
+
+class _ResolverTestMixin(object):
+    resolver = None  # type: typing.Any
+
+    @gen_test
+    def test_localhost(self: typing.Any):
+        addrinfo = yield self.resolver.resolve("localhost", 80, socket.AF_UNSPEC)
+        self.assertIn((socket.AF_INET, ("127.0.0.1", 80)), addrinfo)
+
+
+# It is impossible to quickly and consistently generate an error in name
+# resolution, so test this case separately, using mocks as needed.
+class _ResolverErrorTestMixin(object):
+    resolver = None  # type: typing.Any
+
+    @gen_test
+    def test_bad_host(self: typing.Any):
+        with self.assertRaises(IOError):
+            yield self.resolver.resolve("an invalid domain", 80, socket.AF_UNSPEC)
+
+
+def _failing_getaddrinfo(*args):
+    """Dummy implementation of getaddrinfo for use in mocks"""
+    raise socket.gaierror(errno.EIO, "mock: lookup failed")
+
+
+@skipIfNoNetwork
+class BlockingResolverTest(AsyncTestCase, _ResolverTestMixin):
+    def setUp(self):
+        super().setUp()
+        self.resolver = BlockingResolver()
+
+
+# getaddrinfo-based tests need mocking to reliably generate errors;
+# some configurations are slow to produce errors and take longer than
+# our default timeout.
+class BlockingResolverErrorTest(AsyncTestCase, _ResolverErrorTestMixin):
+    def setUp(self):
+        super().setUp()
+        self.resolver = BlockingResolver()
+        self.real_getaddrinfo = socket.getaddrinfo
+        socket.getaddrinfo = _failing_getaddrinfo
+
+    def tearDown(self):
+        socket.getaddrinfo = self.real_getaddrinfo
+        super().tearDown()
+
+
+class OverrideResolverTest(AsyncTestCase, _ResolverTestMixin):
+    def setUp(self):
+        super().setUp()
+        mapping = {
+            ("google.com", 80): ("1.2.3.4", 80),
+            ("google.com", 80, socket.AF_INET): ("1.2.3.4", 80),
+            ("google.com", 80, socket.AF_INET6): (
+                "2a02:6b8:7c:40c:c51e:495f:e23a:3",
+                80,
+            ),
+        }
+        self.resolver = OverrideResolver(BlockingResolver(), mapping)
+
+    @gen_test
+    def test_resolve_multiaddr(self):
+        result = yield self.resolver.resolve("google.com", 80, socket.AF_INET)
+        self.assertIn((socket.AF_INET, ("1.2.3.4", 80)), result)
+
+        result = yield self.resolver.resolve("google.com", 80, socket.AF_INET6)
+        self.assertIn(
+            (socket.AF_INET6, ("2a02:6b8:7c:40c:c51e:495f:e23a:3", 80, 0, 0)), result
+        )
+
+
+@skipIfNoNetwork
+class ThreadedResolverTest(AsyncTestCase, _ResolverTestMixin):
+    def setUp(self):
+        super().setUp()
+        self.resolver = ThreadedResolver()
+
+    def tearDown(self):
+        self.resolver.close()
+        super().tearDown()
+
+
+class ThreadedResolverErrorTest(AsyncTestCase, _ResolverErrorTestMixin):
+    def setUp(self):
+        super().setUp()
+        self.resolver = BlockingResolver()
+        self.real_getaddrinfo = socket.getaddrinfo
+        socket.getaddrinfo = _failing_getaddrinfo
+
+    def tearDown(self):
+        socket.getaddrinfo = self.real_getaddrinfo
+        super().tearDown()
+
+
+@skipIfNoNetwork
+@unittest.skipIf(sys.platform == "win32", "preexec_fn not available on win32")
+class ThreadedResolverImportTest(unittest.TestCase):
+    def test_import(self):
+        TIMEOUT = 5
+
+        # Test for a deadlock when importing a module that runs the
+        # ThreadedResolver at import-time. See resolve_test.py for
+        # full explanation.
+        command = [sys.executable, "-c", "import tornado.test.resolve_test_helper"]
+
+        start = time.time()
+        popen = Popen(command, preexec_fn=lambda: signal.alarm(TIMEOUT))
+        while time.time() - start < TIMEOUT:
+            return_code = popen.poll()
+            if return_code is not None:
+                self.assertEqual(0, return_code)
+                return  # Success.
+            time.sleep(0.05)
+
+        self.fail("import timed out")
+
+
+# We do not test errors with CaresResolver:
+# Some DNS-hijacking ISPs (e.g. Time Warner) return non-empty results
+# with an NXDOMAIN status code.  Most resolvers treat this as an error;
+# C-ares returns the results, making the "bad_host" tests unreliable.
+# C-ares will try to resolve even malformed names, such as the
+# name with spaces used in this test.
+@skipIfNoNetwork
+@unittest.skipIf(pycares is None, "pycares module not present")
+@unittest.skipIf(sys.platform == "win32", "pycares doesn't return loopback on windows")
+@unittest.skipIf(sys.platform == "darwin", "pycares doesn't return 127.0.0.1 on darwin")
+class CaresResolverTest(AsyncTestCase, _ResolverTestMixin):
+    def setUp(self):
+        super().setUp()
+        self.resolver = CaresResolver()
+
+
+# TwistedResolver produces consistent errors in our test cases so we
+# could test the regular and error cases in the same class. However,
+# in the error cases it appears that cleanup of socket objects is
+# handled asynchronously and occasionally results in "unclosed socket"
+# warnings if not given time to shut down (and there is no way to
+# explicitly shut it down). This makes the test flaky, so we do not
+# test error cases here.
+@skipIfNoNetwork
+@unittest.skipIf(twisted is None, "twisted module not present")
+@unittest.skipIf(
+    getattr(twisted, "__version__", "0.0") < "12.1", "old version of twisted"
+)
+@unittest.skipIf(sys.platform == "win32", "twisted resolver hangs on windows")
+class TwistedResolverTest(AsyncTestCase, _ResolverTestMixin):
+    def setUp(self):
+        super().setUp()
+        self.resolver = TwistedResolver()
+
+
+class IsValidIPTest(unittest.TestCase):
+    def test_is_valid_ip(self):
+        self.assertTrue(is_valid_ip("127.0.0.1"))
+        self.assertTrue(is_valid_ip("4.4.4.4"))
+        self.assertTrue(is_valid_ip("::1"))
+        self.assertTrue(is_valid_ip("2620:0:1cfe:face:b00c::3"))
+        self.assertTrue(not is_valid_ip("www.google.com"))
+        self.assertTrue(not is_valid_ip("localhost"))
+        self.assertTrue(not is_valid_ip("4.4.4.4<"))
+        self.assertTrue(not is_valid_ip(" 127.0.0.1"))
+        self.assertTrue(not is_valid_ip(""))
+        self.assertTrue(not is_valid_ip(" "))
+        self.assertTrue(not is_valid_ip("\n"))
+        self.assertTrue(not is_valid_ip("\x00"))
+
+
+class TestPortAllocation(unittest.TestCase):
+    def test_same_port_allocation(self):
+        if "TRAVIS" in os.environ:
+            self.skipTest("dual-stack servers often have port conflicts on travis")
+        sockets = bind_sockets(0, "localhost")
+        try:
+            port = sockets[0].getsockname()[1]
+            self.assertTrue(all(s.getsockname()[1] == port for s in sockets[1:]))
+        finally:
+            for sock in sockets:
+                sock.close()
+
+    @unittest.skipIf(
+        not hasattr(socket, "SO_REUSEPORT"), "SO_REUSEPORT is not supported"
+    )
+    def test_reuse_port(self):
+        sockets = []  # type: List[socket.socket]
+        socket, port = bind_unused_port(reuse_port=True)
+        try:
+            sockets = bind_sockets(port, "127.0.0.1", reuse_port=True)
+            self.assertTrue(all(s.getsockname()[1] == port for s in sockets))
+        finally:
+            socket.close()
+            for sock in sockets:
+                sock.close()

.venv/Lib/site-packages/tornado/test/options_test.cfg

@@ -0,0 +1,7 @@
+port=443
+port=443
+username='李康'
+
+foo_bar='a'
+
+my_path = __file__

.venv/Lib/site-packages/tornado/test/options_test.py

@@ -0,0 +1,328 @@
+import datetime
+from io import StringIO
+import os
+import sys
+from unittest import mock
+import unittest
+
+from tornado.options import OptionParser, Error
+from tornado.util import basestring_type
+from tornado.test.util import subTest
+
+import typing
+
+if typing.TYPE_CHECKING:
+    from typing import List  # noqa: F401
+
+
+class Email(object):
+    def __init__(self, value):
+        if isinstance(value, str) and "@" in value:
+            self._value = value
+        else:
+            raise ValueError()
+
+    @property
+    def value(self):
+        return self._value
+
+
+class OptionsTest(unittest.TestCase):
+    def test_parse_command_line(self):
+        options = OptionParser()
+        options.define("port", default=80)
+        options.parse_command_line(["main.py", "--port=443"])
+        self.assertEqual(options.port, 443)
+
+    def test_parse_config_file(self):
+        options = OptionParser()
+        options.define("port", default=80)
+        options.define("username", default="foo")
+        options.define("my_path")
+        config_path = os.path.join(
+            os.path.dirname(os.path.abspath(__file__)), "options_test.cfg"
+        )
+        options.parse_config_file(config_path)
+        self.assertEqual(options.port, 443)
+        self.assertEqual(options.username, "李康")
+        self.assertEqual(options.my_path, config_path)
+
+    def test_parse_callbacks(self):
+        options = OptionParser()
+        self.called = False
+
+        def callback():
+            self.called = True
+
+        options.add_parse_callback(callback)
+
+        # non-final parse doesn't run callbacks
+        options.parse_command_line(["main.py"], final=False)
+        self.assertFalse(self.called)
+
+        # final parse does
+        options.parse_command_line(["main.py"])
+        self.assertTrue(self.called)
+
+        # callbacks can be run more than once on the same options
+        # object if there are multiple final parses
+        self.called = False
+        options.parse_command_line(["main.py"])
+        self.assertTrue(self.called)
+
+    def test_help(self):
+        options = OptionParser()
+        try:
+            orig_stderr = sys.stderr
+            sys.stderr = StringIO()
+            with self.assertRaises(SystemExit):
+                options.parse_command_line(["main.py", "--help"])
+            usage = sys.stderr.getvalue()
+        finally:
+            sys.stderr = orig_stderr
+        self.assertIn("Usage:", usage)
+
+    def test_subcommand(self):
+        base_options = OptionParser()
+        base_options.define("verbose", default=False)
+        sub_options = OptionParser()
+        sub_options.define("foo", type=str)
+        rest = base_options.parse_command_line(
+            ["main.py", "--verbose", "subcommand", "--foo=bar"]
+        )
+        self.assertEqual(rest, ["subcommand", "--foo=bar"])
+        self.assertTrue(base_options.verbose)
+        rest2 = sub_options.parse_command_line(rest)
+        self.assertEqual(rest2, [])
+        self.assertEqual(sub_options.foo, "bar")
+
+        # the two option sets are distinct
+        try:
+            orig_stderr = sys.stderr
+            sys.stderr = StringIO()
+            with self.assertRaises(Error):
+                sub_options.parse_command_line(["subcommand", "--verbose"])
+        finally:
+            sys.stderr = orig_stderr
+
+    def test_setattr(self):
+        options = OptionParser()
+        options.define("foo", default=1, type=int)
+        options.foo = 2
+        self.assertEqual(options.foo, 2)
+
+    def test_setattr_type_check(self):
+        # setattr requires that options be the right type and doesn't
+        # parse from string formats.
+        options = OptionParser()
+        options.define("foo", default=1, type=int)
+        with self.assertRaises(Error):
+            options.foo = "2"
+
+    def test_setattr_with_callback(self):
+        values = []  # type: List[int]
+        options = OptionParser()
+        options.define("foo", default=1, type=int, callback=values.append)
+        options.foo = 2
+        self.assertEqual(values, [2])
+
+    def _sample_options(self):
+        options = OptionParser()
+        options.define("a", default=1)
+        options.define("b", default=2)
+        return options
+
+    def test_iter(self):
+        options = self._sample_options()
+        # OptionParsers always define 'help'.
+        self.assertEqual(set(["a", "b", "help"]), set(iter(options)))
+
+    def test_getitem(self):
+        options = self._sample_options()
+        self.assertEqual(1, options["a"])
+
+    def test_setitem(self):
+        options = OptionParser()
+        options.define("foo", default=1, type=int)
+        options["foo"] = 2
+        self.assertEqual(options["foo"], 2)
+
+    def test_items(self):
+        options = self._sample_options()
+        # OptionParsers always define 'help'.
+        expected = [("a", 1), ("b", 2), ("help", options.help)]
+        actual = sorted(options.items())
+        self.assertEqual(expected, actual)
+
+    def test_as_dict(self):
+        options = self._sample_options()
+        expected = {"a": 1, "b": 2, "help": options.help}
+        self.assertEqual(expected, options.as_dict())
+
+    def test_group_dict(self):
+        options = OptionParser()
+        options.define("a", default=1)
+        options.define("b", group="b_group", default=2)
+
+        frame = sys._getframe(0)
+        this_file = frame.f_code.co_filename
+        self.assertEqual(set(["b_group", "", this_file]), options.groups())
+
+        b_group_dict = options.group_dict("b_group")
+        self.assertEqual({"b": 2}, b_group_dict)
+
+        self.assertEqual({}, options.group_dict("nonexistent"))
+
+    def test_mock_patch(self):
+        # ensure that our setattr hooks don't interfere with mock.patch
+        options = OptionParser()
+        options.define("foo", default=1)
+        options.parse_command_line(["main.py", "--foo=2"])
+        self.assertEqual(options.foo, 2)
+
+        with mock.patch.object(options.mockable(), "foo", 3):
+            self.assertEqual(options.foo, 3)
+        self.assertEqual(options.foo, 2)
+
+        # Try nested patches mixed with explicit sets
+        with mock.patch.object(options.mockable(), "foo", 4):
+            self.assertEqual(options.foo, 4)
+            options.foo = 5
+            self.assertEqual(options.foo, 5)
+            with mock.patch.object(options.mockable(), "foo", 6):
+                self.assertEqual(options.foo, 6)
+            self.assertEqual(options.foo, 5)
+        self.assertEqual(options.foo, 2)
+
+    def _define_options(self):
+        options = OptionParser()
+        options.define("str", type=str)
+        options.define("basestring", type=basestring_type)
+        options.define("int", type=int)
+        options.define("float", type=float)
+        options.define("datetime", type=datetime.datetime)
+        options.define("timedelta", type=datetime.timedelta)
+        options.define("email", type=Email)
+        options.define("list-of-int", type=int, multiple=True)
+        return options
+
+    def _check_options_values(self, options):
+        self.assertEqual(options.str, "asdf")
+        self.assertEqual(options.basestring, "qwer")
+        self.assertEqual(options.int, 42)
+        self.assertEqual(options.float, 1.5)
+        self.assertEqual(options.datetime, datetime.datetime(2013, 4, 28, 5, 16))
+        self.assertEqual(options.timedelta, datetime.timedelta(seconds=45))
+        self.assertEqual(options.email.value, "tornado@web.com")
+        self.assertTrue(isinstance(options.email, Email))
+        self.assertEqual(options.list_of_int, [1, 2, 3])
+
+    def test_types(self):
+        options = self._define_options()
+        options.parse_command_line(
+            [
+                "main.py",
+                "--str=asdf",
+                "--basestring=qwer",
+                "--int=42",
+                "--float=1.5",
+                "--datetime=2013-04-28 05:16",
+                "--timedelta=45s",
+                "--email=tornado@web.com",
+                "--list-of-int=1,2,3",
+            ]
+        )
+        self._check_options_values(options)
+
+    def test_types_with_conf_file(self):
+        for config_file_name in (
+            "options_test_types.cfg",
+            "options_test_types_str.cfg",
+        ):
+            options = self._define_options()
+            options.parse_config_file(
+                os.path.join(os.path.dirname(__file__), config_file_name)
+            )
+            self._check_options_values(options)
+
+    def test_multiple_string(self):
+        options = OptionParser()
+        options.define("foo", type=str, multiple=True)
+        options.parse_command_line(["main.py", "--foo=a,b,c"])
+        self.assertEqual(options.foo, ["a", "b", "c"])
+
+    def test_multiple_int(self):
+        options = OptionParser()
+        options.define("foo", type=int, multiple=True)
+        options.parse_command_line(["main.py", "--foo=1,3,5:7"])
+        self.assertEqual(options.foo, [1, 3, 5, 6, 7])
+
+    def test_error_redefine(self):
+        options = OptionParser()
+        options.define("foo")
+        with self.assertRaises(Error) as cm:
+            options.define("foo")
+        self.assertRegexpMatches(str(cm.exception), "Option.*foo.*already defined")
+
+    def test_error_redefine_underscore(self):
+        # Ensure that the dash/underscore normalization doesn't
+        # interfere with the redefinition error.
+        tests = [
+            ("foo-bar", "foo-bar"),
+            ("foo_bar", "foo_bar"),
+            ("foo-bar", "foo_bar"),
+            ("foo_bar", "foo-bar"),
+        ]
+        for a, b in tests:
+            with subTest(self, a=a, b=b):
+                options = OptionParser()
+                options.define(a)
+                with self.assertRaises(Error) as cm:
+                    options.define(b)
+                self.assertRegexpMatches(
+                    str(cm.exception), "Option.*foo.bar.*already defined"
+                )
+
+    def test_dash_underscore_cli(self):
+        # Dashes and underscores should be interchangeable.
+        for defined_name in ["foo-bar", "foo_bar"]:
+            for flag in ["--foo-bar=a", "--foo_bar=a"]:
+                options = OptionParser()
+                options.define(defined_name)
+                options.parse_command_line(["main.py", flag])
+                # Attr-style access always uses underscores.
+                self.assertEqual(options.foo_bar, "a")
+                # Dict-style access allows both.
+                self.assertEqual(options["foo-bar"], "a")
+                self.assertEqual(options["foo_bar"], "a")
+
+    def test_dash_underscore_file(self):
+        # No matter how an option was defined, it can be set with underscores
+        # in a config file.
+        for defined_name in ["foo-bar", "foo_bar"]:
+            options = OptionParser()
+            options.define(defined_name)
+            options.parse_config_file(
+                os.path.join(os.path.dirname(__file__), "options_test.cfg")
+            )
+            self.assertEqual(options.foo_bar, "a")
+
+    def test_dash_underscore_introspection(self):
+        # Original names are preserved in introspection APIs.
+        options = OptionParser()
+        options.define("with-dash", group="g")
+        options.define("with_underscore", group="g")
+        all_options = ["help", "with-dash", "with_underscore"]
+        self.assertEqual(sorted(options), all_options)
+        self.assertEqual(sorted(k for (k, v) in options.items()), all_options)
+        self.assertEqual(sorted(options.as_dict().keys()), all_options)
+
+        self.assertEqual(
+            sorted(options.group_dict("g")), ["with-dash", "with_underscore"]
+        )
+
+        # --help shows CLI-style names with dashes.
+        buf = StringIO()
+        options.print_help(buf)
+        self.assertIn("--with-dash", buf.getvalue())
+        self.assertIn("--with-underscore", buf.getvalue())

.venv/Lib/site-packages/tornado/test/options_test_types.cfg

@@ -0,0 +1,11 @@
+from datetime import datetime, timedelta
+from tornado.test.options_test import Email
+
+str = 'asdf'
+basestring = 'qwer'
+int = 42
+float = 1.5
+datetime = datetime(2013, 4, 28, 5, 16)
+timedelta = timedelta(0, 45)
+email = Email('tornado@web.com')
+list_of_int = [1, 2, 3]

.venv/Lib/site-packages/tornado/test/options_test_types_str.cfg

@@ -0,0 +1,8 @@
+str = 'asdf'
+basestring = 'qwer'
+int = 42
+float = 1.5
+datetime = '2013-04-28 05:16'
+timedelta = '45s'
+email = 'tornado@web.com'
+list_of_int = '1,2,3'

.venv/Lib/site-packages/tornado/test/process_test.py

@@ -0,0 +1,274 @@
+import asyncio
+import logging
+import os
+import signal
+import subprocess
+import sys
+import time
+import unittest
+
+from tornado.httpclient import HTTPClient, HTTPError
+from tornado.httpserver import HTTPServer
+from tornado.ioloop import IOLoop
+from tornado.log import gen_log
+from tornado.process import fork_processes, task_id, Subprocess
+from tornado.simple_httpclient import SimpleAsyncHTTPClient
+from tornado.testing import bind_unused_port, ExpectLog, AsyncTestCase, gen_test
+from tornado.test.util import skipIfNonUnix
+from tornado.web import RequestHandler, Application
+
+
+# Not using AsyncHTTPTestCase because we need control over the IOLoop.
+@skipIfNonUnix
+class ProcessTest(unittest.TestCase):
+    def get_app(self):
+        class ProcessHandler(RequestHandler):
+            def get(self):
+                if self.get_argument("exit", None):
+                    # must use os._exit instead of sys.exit so unittest's
+                    # exception handler doesn't catch it
+                    os._exit(int(self.get_argument("exit")))
+                if self.get_argument("signal", None):
+                    os.kill(os.getpid(), int(self.get_argument("signal")))
+                self.write(str(os.getpid()))
+
+        return Application([("/", ProcessHandler)])
+
+    def tearDown(self):
+        if task_id() is not None:
+            # We're in a child process, and probably got to this point
+            # via an uncaught exception.  If we return now, both
+            # processes will continue with the rest of the test suite.
+            # Exit now so the parent process will restart the child
+            # (since we don't have a clean way to signal failure to
+            # the parent that won't restart)
+            logging.error("aborting child process from tearDown")
+            logging.shutdown()
+            os._exit(1)
+        # In the surviving process, clear the alarm we set earlier
+        signal.alarm(0)
+        super().tearDown()
+
+    def test_multi_process(self):
+        # This test doesn't work on twisted because we use the global
+        # reactor and don't restore it to a sane state after the fork
+        # (asyncio has the same issue, but we have a special case in
+        # place for it).
+        with ExpectLog(
+            gen_log, "(Starting .* processes|child .* exited|uncaught exception)"
+        ):
+            sock, port = bind_unused_port()
+
+            def get_url(path):
+                return "http://127.0.0.1:%d%s" % (port, path)
+
+            # ensure that none of these processes live too long
+            signal.alarm(5)  # master process
+            try:
+                id = fork_processes(3, max_restarts=3)
+                self.assertTrue(id is not None)
+                signal.alarm(5)  # child processes
+            except SystemExit as e:
+                # if we exit cleanly from fork_processes, all the child processes
+                # finished with status 0
+                self.assertEqual(e.code, 0)
+                self.assertTrue(task_id() is None)
+                sock.close()
+                return
+            try:
+                if asyncio is not None:
+                    # Reset the global asyncio event loop, which was put into
+                    # a broken state by the fork.
+                    asyncio.set_event_loop(asyncio.new_event_loop())
+                if id in (0, 1):
+                    self.assertEqual(id, task_id())
+                    server = HTTPServer(self.get_app())
+                    server.add_sockets([sock])
+                    IOLoop.current().start()
+                elif id == 2:
+                    self.assertEqual(id, task_id())
+                    sock.close()
+                    # Always use SimpleAsyncHTTPClient here; the curl
+                    # version appears to get confused sometimes if the
+                    # connection gets closed before it's had a chance to
+                    # switch from writing mode to reading mode.
+                    client = HTTPClient(SimpleAsyncHTTPClient)
+
+                    def fetch(url, fail_ok=False):
+                        try:
+                            return client.fetch(get_url(url))
+                        except HTTPError as e:
+                            if not (fail_ok and e.code == 599):
+                                raise
+
+                    # Make two processes exit abnormally
+                    fetch("/?exit=2", fail_ok=True)
+                    fetch("/?exit=3", fail_ok=True)
+
+                    # They've been restarted, so a new fetch will work
+                    int(fetch("/").body)
+
+                    # Now the same with signals
+                    # Disabled because on the mac a process dying with a signal
+                    # can trigger an "Application exited abnormally; send error
+                    # report to Apple?" prompt.
+                    # fetch("/?signal=%d" % signal.SIGTERM, fail_ok=True)
+                    # fetch("/?signal=%d" % signal.SIGABRT, fail_ok=True)
+                    # int(fetch("/").body)
+
+                    # Now kill them normally so they won't be restarted
+                    fetch("/?exit=0", fail_ok=True)
+                    # One process left; watch it's pid change
+                    pid = int(fetch("/").body)
+                    fetch("/?exit=4", fail_ok=True)
+                    pid2 = int(fetch("/").body)
+                    self.assertNotEqual(pid, pid2)
+
+                    # Kill the last one so we shut down cleanly
+                    fetch("/?exit=0", fail_ok=True)
+
+                    os._exit(0)
+            except Exception:
+                logging.error("exception in child process %d", id, exc_info=True)
+                raise
+
+
+@skipIfNonUnix
+class SubprocessTest(AsyncTestCase):
+    def term_and_wait(self, subproc):
+        subproc.proc.terminate()
+        subproc.proc.wait()
+
+    @gen_test
+    def test_subprocess(self):
+        if IOLoop.configured_class().__name__.endswith("LayeredTwistedIOLoop"):
+            # This test fails non-deterministically with LayeredTwistedIOLoop.
+            # (the read_until('\n') returns '\n' instead of 'hello\n')
+            # This probably indicates a problem with either TornadoReactor
+            # or TwistedIOLoop, but I haven't been able to track it down
+            # and for now this is just causing spurious travis-ci failures.
+            raise unittest.SkipTest(
+                "Subprocess tests not compatible with " "LayeredTwistedIOLoop"
+            )
+        subproc = Subprocess(
+            [sys.executable, "-u", "-i"],
+            stdin=Subprocess.STREAM,
+            stdout=Subprocess.STREAM,
+            stderr=subprocess.STDOUT,
+        )
+        self.addCleanup(lambda: self.term_and_wait(subproc))
+        self.addCleanup(subproc.stdout.close)
+        self.addCleanup(subproc.stdin.close)
+        yield subproc.stdout.read_until(b">>> ")
+        subproc.stdin.write(b"print('hello')\n")
+        data = yield subproc.stdout.read_until(b"\n")
+        self.assertEqual(data, b"hello\n")
+
+        yield subproc.stdout.read_until(b">>> ")
+        subproc.stdin.write(b"raise SystemExit\n")
+        data = yield subproc.stdout.read_until_close()
+        self.assertEqual(data, b"")
+
+    @gen_test
+    def test_close_stdin(self):
+        # Close the parent's stdin handle and see that the child recognizes it.
+        subproc = Subprocess(
+            [sys.executable, "-u", "-i"],
+            stdin=Subprocess.STREAM,
+            stdout=Subprocess.STREAM,
+            stderr=subprocess.STDOUT,
+        )
+        self.addCleanup(lambda: self.term_and_wait(subproc))
+        yield subproc.stdout.read_until(b">>> ")
+        subproc.stdin.close()
+        data = yield subproc.stdout.read_until_close()
+        self.assertEqual(data, b"\n")
+
+    @gen_test
+    def test_stderr(self):
+        # This test is mysteriously flaky on twisted: it succeeds, but logs
+        # an error of EBADF on closing a file descriptor.
+        subproc = Subprocess(
+            [sys.executable, "-u", "-c", r"import sys; sys.stderr.write('hello\n')"],
+            stderr=Subprocess.STREAM,
+        )
+        self.addCleanup(lambda: self.term_and_wait(subproc))
+        data = yield subproc.stderr.read_until(b"\n")
+        self.assertEqual(data, b"hello\n")
+        # More mysterious EBADF: This fails if done with self.addCleanup instead of here.
+        subproc.stderr.close()
+
+    def test_sigchild(self):
+        Subprocess.initialize()
+        self.addCleanup(Subprocess.uninitialize)
+        subproc = Subprocess([sys.executable, "-c", "pass"])
+        subproc.set_exit_callback(self.stop)
+        ret = self.wait()
+        self.assertEqual(ret, 0)
+        self.assertEqual(subproc.returncode, ret)
+
+    @gen_test
+    def test_sigchild_future(self):
+        Subprocess.initialize()
+        self.addCleanup(Subprocess.uninitialize)
+        subproc = Subprocess([sys.executable, "-c", "pass"])
+        ret = yield subproc.wait_for_exit()
+        self.assertEqual(ret, 0)
+        self.assertEqual(subproc.returncode, ret)
+
+    def test_sigchild_signal(self):
+        Subprocess.initialize()
+        self.addCleanup(Subprocess.uninitialize)
+        subproc = Subprocess(
+            [sys.executable, "-c", "import time; time.sleep(30)"],
+            stdout=Subprocess.STREAM,
+        )
+        self.addCleanup(subproc.stdout.close)
+        subproc.set_exit_callback(self.stop)
+
+        # For unclear reasons, killing a process too soon after
+        # creating it can result in an exit status corresponding to
+        # SIGKILL instead of the actual signal involved. This has been
+        # observed on macOS 10.15 with Python 3.8 installed via brew,
+        # but not with the system-installed Python 3.7.
+        time.sleep(0.1)
+
+        os.kill(subproc.pid, signal.SIGTERM)
+        try:
+            ret = self.wait()
+        except AssertionError:
+            # We failed to get the termination signal. This test is
+            # occasionally flaky on pypy, so try to get a little more
+            # information: did the process close its stdout
+            # (indicating that the problem is in the parent process's
+            # signal handling) or did the child process somehow fail
+            # to terminate?
+            fut = subproc.stdout.read_until_close()
+            fut.add_done_callback(lambda f: self.stop())  # type: ignore
+            try:
+                self.wait()
+            except AssertionError:
+                raise AssertionError("subprocess failed to terminate")
+            else:
+                raise AssertionError(
+                    "subprocess closed stdout but failed to " "get termination signal"
+                )
+        self.assertEqual(subproc.returncode, ret)
+        self.assertEqual(ret, -signal.SIGTERM)
+
+    @gen_test
+    def test_wait_for_exit_raise(self):
+        Subprocess.initialize()
+        self.addCleanup(Subprocess.uninitialize)
+        subproc = Subprocess([sys.executable, "-c", "import sys; sys.exit(1)"])
+        with self.assertRaises(subprocess.CalledProcessError) as cm:
+            yield subproc.wait_for_exit()
+        self.assertEqual(cm.exception.returncode, 1)
+
+    @gen_test
+    def test_wait_for_exit_raise_disabled(self):
+        Subprocess.initialize()
+        self.addCleanup(Subprocess.uninitialize)
+        subproc = Subprocess([sys.executable, "-c", "import sys; sys.exit(1)"])
+        ret = yield subproc.wait_for_exit(raise_error=False)
+        self.assertEqual(ret, 1)

.venv/Lib/site-packages/tornado/test/queues_test.py

@@ -0,0 +1,431 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import asyncio
+from datetime import timedelta
+from random import random
+import unittest
+
+from tornado import gen, queues
+from tornado.gen import TimeoutError
+from tornado.testing import gen_test, AsyncTestCase
+
+
+class QueueBasicTest(AsyncTestCase):
+    def test_repr_and_str(self):
+        q = queues.Queue(maxsize=1)  # type: queues.Queue[None]
+        self.assertIn(hex(id(q)), repr(q))
+        self.assertNotIn(hex(id(q)), str(q))
+        q.get()
+
+        for q_str in repr(q), str(q):
+            self.assertTrue(q_str.startswith("<Queue"))
+            self.assertIn("maxsize=1", q_str)
+            self.assertIn("getters[1]", q_str)
+            self.assertNotIn("putters", q_str)
+            self.assertNotIn("tasks", q_str)
+
+        q.put(None)
+        q.put(None)
+        # Now the queue is full, this putter blocks.
+        q.put(None)
+
+        for q_str in repr(q), str(q):
+            self.assertNotIn("getters", q_str)
+            self.assertIn("putters[1]", q_str)
+            self.assertIn("tasks=2", q_str)
+
+    def test_order(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        for i in [1, 3, 2]:
+            q.put_nowait(i)
+
+        items = [q.get_nowait() for _ in range(3)]
+        self.assertEqual([1, 3, 2], items)
+
+    @gen_test
+    def test_maxsize(self):
+        self.assertRaises(TypeError, queues.Queue, maxsize=None)
+        self.assertRaises(ValueError, queues.Queue, maxsize=-1)
+
+        q = queues.Queue(maxsize=2)  # type: queues.Queue[int]
+        self.assertTrue(q.empty())
+        self.assertFalse(q.full())
+        self.assertEqual(2, q.maxsize)
+        self.assertTrue(q.put(0).done())
+        self.assertTrue(q.put(1).done())
+        self.assertFalse(q.empty())
+        self.assertTrue(q.full())
+        put2 = q.put(2)
+        self.assertFalse(put2.done())
+        self.assertEqual(0, (yield q.get()))  # Make room.
+        self.assertTrue(put2.done())
+        self.assertFalse(q.empty())
+        self.assertTrue(q.full())
+
+
+class QueueGetTest(AsyncTestCase):
+    @gen_test
+    def test_blocking_get(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        q.put_nowait(0)
+        self.assertEqual(0, (yield q.get()))
+
+    def test_nonblocking_get(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        q.put_nowait(0)
+        self.assertEqual(0, q.get_nowait())
+
+    def test_nonblocking_get_exception(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        self.assertRaises(queues.QueueEmpty, q.get_nowait)
+
+    @gen_test
+    def test_get_with_putters(self):
+        q = queues.Queue(1)  # type: queues.Queue[int]
+        q.put_nowait(0)
+        put = q.put(1)
+        self.assertEqual(0, (yield q.get()))
+        self.assertIsNone((yield put))
+
+    @gen_test
+    def test_blocking_get_wait(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        q.put(0)
+        self.io_loop.call_later(0.01, q.put_nowait, 1)
+        self.io_loop.call_later(0.02, q.put_nowait, 2)
+        self.assertEqual(0, (yield q.get(timeout=timedelta(seconds=1))))
+        self.assertEqual(1, (yield q.get(timeout=timedelta(seconds=1))))
+
+    @gen_test
+    def test_get_timeout(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        get_timeout = q.get(timeout=timedelta(seconds=0.01))
+        get = q.get()
+        with self.assertRaises(TimeoutError):
+            yield get_timeout
+
+        q.put_nowait(0)
+        self.assertEqual(0, (yield get))
+
+    @gen_test
+    def test_get_timeout_preempted(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        get = q.get(timeout=timedelta(seconds=0.01))
+        q.put(0)
+        yield gen.sleep(0.02)
+        self.assertEqual(0, (yield get))
+
+    @gen_test
+    def test_get_clears_timed_out_putters(self):
+        q = queues.Queue(1)  # type: queues.Queue[int]
+        # First putter succeeds, remainder block.
+        putters = [q.put(i, timedelta(seconds=0.01)) for i in range(10)]
+        put = q.put(10)
+        self.assertEqual(10, len(q._putters))
+        yield gen.sleep(0.02)
+        self.assertEqual(10, len(q._putters))
+        self.assertFalse(put.done())  # Final waiter is still active.
+        q.put(11)
+        self.assertEqual(0, (yield q.get()))  # get() clears the waiters.
+        self.assertEqual(1, len(q._putters))
+        for putter in putters[1:]:
+            self.assertRaises(TimeoutError, putter.result)
+
+    @gen_test
+    def test_get_clears_timed_out_getters(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        getters = [
+            asyncio.ensure_future(q.get(timedelta(seconds=0.01))) for _ in range(10)
+        ]
+        get = asyncio.ensure_future(q.get())
+        self.assertEqual(11, len(q._getters))
+        yield gen.sleep(0.02)
+        self.assertEqual(11, len(q._getters))
+        self.assertFalse(get.done())  # Final waiter is still active.
+        q.get()  # get() clears the waiters.
+        self.assertEqual(2, len(q._getters))
+        for getter in getters:
+            self.assertRaises(TimeoutError, getter.result)
+
+    @gen_test
+    def test_async_for(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        for i in range(5):
+            q.put(i)
+
+        async def f():
+            results = []
+            async for i in q:
+                results.append(i)
+                if i == 4:
+                    return results
+
+        results = yield f()
+        self.assertEqual(results, list(range(5)))
+
+
+class QueuePutTest(AsyncTestCase):
+    @gen_test
+    def test_blocking_put(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        q.put(0)
+        self.assertEqual(0, q.get_nowait())
+
+    def test_nonblocking_put_exception(self):
+        q = queues.Queue(1)  # type: queues.Queue[int]
+        q.put(0)
+        self.assertRaises(queues.QueueFull, q.put_nowait, 1)
+
+    @gen_test
+    def test_put_with_getters(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        get0 = q.get()
+        get1 = q.get()
+        yield q.put(0)
+        self.assertEqual(0, (yield get0))
+        yield q.put(1)
+        self.assertEqual(1, (yield get1))
+
+    @gen_test
+    def test_nonblocking_put_with_getters(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        get0 = q.get()
+        get1 = q.get()
+        q.put_nowait(0)
+        # put_nowait does *not* immediately unblock getters.
+        yield gen.moment
+        self.assertEqual(0, (yield get0))
+        q.put_nowait(1)
+        yield gen.moment
+        self.assertEqual(1, (yield get1))
+
+    @gen_test
+    def test_blocking_put_wait(self):
+        q = queues.Queue(1)  # type: queues.Queue[int]
+        q.put_nowait(0)
+
+        def get_and_discard():
+            q.get()
+
+        self.io_loop.call_later(0.01, get_and_discard)
+        self.io_loop.call_later(0.02, get_and_discard)
+        futures = [q.put(0), q.put(1)]
+        self.assertFalse(any(f.done() for f in futures))
+        yield futures
+
+    @gen_test
+    def test_put_timeout(self):
+        q = queues.Queue(1)  # type: queues.Queue[int]
+        q.put_nowait(0)  # Now it's full.
+        put_timeout = q.put(1, timeout=timedelta(seconds=0.01))
+        put = q.put(2)
+        with self.assertRaises(TimeoutError):
+            yield put_timeout
+
+        self.assertEqual(0, q.get_nowait())
+        # 1 was never put in the queue.
+        self.assertEqual(2, (yield q.get()))
+
+        # Final get() unblocked this putter.
+        yield put
+
+    @gen_test
+    def test_put_timeout_preempted(self):
+        q = queues.Queue(1)  # type: queues.Queue[int]
+        q.put_nowait(0)
+        put = q.put(1, timeout=timedelta(seconds=0.01))
+        q.get()
+        yield gen.sleep(0.02)
+        yield put  # No TimeoutError.
+
+    @gen_test
+    def test_put_clears_timed_out_putters(self):
+        q = queues.Queue(1)  # type: queues.Queue[int]
+        # First putter succeeds, remainder block.
+        putters = [q.put(i, timedelta(seconds=0.01)) for i in range(10)]
+        put = q.put(10)
+        self.assertEqual(10, len(q._putters))
+        yield gen.sleep(0.02)
+        self.assertEqual(10, len(q._putters))
+        self.assertFalse(put.done())  # Final waiter is still active.
+        q.put(11)  # put() clears the waiters.
+        self.assertEqual(2, len(q._putters))
+        for putter in putters[1:]:
+            self.assertRaises(TimeoutError, putter.result)
+
+    @gen_test
+    def test_put_clears_timed_out_getters(self):
+        q = queues.Queue()  # type: queues.Queue[int]
+        getters = [
+            asyncio.ensure_future(q.get(timedelta(seconds=0.01))) for _ in range(10)
+        ]
+        get = asyncio.ensure_future(q.get())
+        q.get()
+        self.assertEqual(12, len(q._getters))
+        yield gen.sleep(0.02)
+        self.assertEqual(12, len(q._getters))
+        self.assertFalse(get.done())  # Final waiters still active.
+        q.put(0)  # put() clears the waiters.
+        self.assertEqual(1, len(q._getters))
+        self.assertEqual(0, (yield get))
+        for getter in getters:
+            self.assertRaises(TimeoutError, getter.result)
+
+    @gen_test
+    def test_float_maxsize(self):
+        # If a float is passed for maxsize, a reasonable limit should
+        # be enforced, instead of being treated as unlimited.
+        # It happens to be rounded up.
+        # http://bugs.python.org/issue21723
+        q = queues.Queue(maxsize=1.3)  # type: ignore
+        self.assertTrue(q.empty())
+        self.assertFalse(q.full())
+        q.put_nowait(0)
+        q.put_nowait(1)
+        self.assertFalse(q.empty())
+        self.assertTrue(q.full())
+        self.assertRaises(queues.QueueFull, q.put_nowait, 2)
+        self.assertEqual(0, q.get_nowait())
+        self.assertFalse(q.empty())
+        self.assertFalse(q.full())
+
+        yield q.put(2)
+        put = q.put(3)
+        self.assertFalse(put.done())
+        self.assertEqual(1, (yield q.get()))
+        yield put
+        self.assertTrue(q.full())
+
+
+class QueueJoinTest(AsyncTestCase):
+    queue_class = queues.Queue
+
+    def test_task_done_underflow(self):
+        q = self.queue_class()  # type: queues.Queue
+        self.assertRaises(ValueError, q.task_done)
+
+    @gen_test
+    def test_task_done(self):
+        q = self.queue_class()  # type: queues.Queue
+        for i in range(100):
+            q.put_nowait(i)
+
+        self.accumulator = 0
+
+        @gen.coroutine
+        def worker():
+            while True:
+                item = yield q.get()
+                self.accumulator += item
+                q.task_done()
+                yield gen.sleep(random() * 0.01)
+
+        # Two coroutines share work.
+        worker()
+        worker()
+        yield q.join()
+        self.assertEqual(sum(range(100)), self.accumulator)
+
+    @gen_test
+    def test_task_done_delay(self):
+        # Verify it is task_done(), not get(), that unblocks join().
+        q = self.queue_class()  # type: queues.Queue
+        q.put_nowait(0)
+        join = asyncio.ensure_future(q.join())
+        self.assertFalse(join.done())
+        yield q.get()
+        self.assertFalse(join.done())
+        yield gen.moment
+        self.assertFalse(join.done())
+        q.task_done()
+        self.assertTrue(join.done())
+
+    @gen_test
+    def test_join_empty_queue(self):
+        q = self.queue_class()  # type: queues.Queue
+        yield q.join()
+        yield q.join()
+
+    @gen_test
+    def test_join_timeout(self):
+        q = self.queue_class()  # type: queues.Queue
+        q.put(0)
+        with self.assertRaises(TimeoutError):
+            yield q.join(timeout=timedelta(seconds=0.01))
+
+
+class PriorityQueueJoinTest(QueueJoinTest):
+    queue_class = queues.PriorityQueue
+
+    @gen_test
+    def test_order(self):
+        q = self.queue_class(maxsize=2)
+        q.put_nowait((1, "a"))
+        q.put_nowait((0, "b"))
+        self.assertTrue(q.full())
+        q.put((3, "c"))
+        q.put((2, "d"))
+        self.assertEqual((0, "b"), q.get_nowait())
+        self.assertEqual((1, "a"), (yield q.get()))
+        self.assertEqual((2, "d"), q.get_nowait())
+        self.assertEqual((3, "c"), (yield q.get()))
+        self.assertTrue(q.empty())
+
+
+class LifoQueueJoinTest(QueueJoinTest):
+    queue_class = queues.LifoQueue
+
+    @gen_test
+    def test_order(self):
+        q = self.queue_class(maxsize=2)
+        q.put_nowait(1)
+        q.put_nowait(0)
+        self.assertTrue(q.full())
+        q.put(3)
+        q.put(2)
+        self.assertEqual(3, q.get_nowait())
+        self.assertEqual(2, (yield q.get()))
+        self.assertEqual(0, q.get_nowait())
+        self.assertEqual(1, (yield q.get()))
+        self.assertTrue(q.empty())
+
+
+class ProducerConsumerTest(AsyncTestCase):
+    @gen_test
+    def test_producer_consumer(self):
+        q = queues.Queue(maxsize=3)  # type: queues.Queue[int]
+        history = []
+
+        # We don't yield between get() and task_done(), so get() must wait for
+        # the next tick. Otherwise we'd immediately call task_done and unblock
+        # join() before q.put() resumes, and we'd only process the first four
+        # items.
+        @gen.coroutine
+        def consumer():
+            while True:
+                history.append((yield q.get()))
+                q.task_done()
+
+        @gen.coroutine
+        def producer():
+            for item in range(10):
+                yield q.put(item)
+
+        consumer()
+        yield producer()
+        yield q.join()
+        self.assertEqual(list(range(10)), history)
+
+
+if __name__ == "__main__":
+    unittest.main()

.venv/Lib/site-packages/tornado/test/resolve_test_helper.py

@@ -0,0 +1,10 @@
+from tornado.ioloop import IOLoop
+from tornado.netutil import ThreadedResolver
+
+# When this module is imported, it runs getaddrinfo on a thread. Since
+# the hostname is unicode, getaddrinfo attempts to import encodings.idna
+# but blocks on the import lock. Verify that ThreadedResolver avoids
+# this deadlock.
+
+resolver = ThreadedResolver()
+IOLoop.current().run_sync(lambda: resolver.resolve(u"localhost", 80))

.venv/Lib/site-packages/tornado/test/routing_test.py

@@ -0,0 +1,276 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from tornado.httputil import (
+    HTTPHeaders,
+    HTTPMessageDelegate,
+    HTTPServerConnectionDelegate,
+    ResponseStartLine,
+)
+from tornado.routing import (
+    HostMatches,
+    PathMatches,
+    ReversibleRouter,
+    Router,
+    Rule,
+    RuleRouter,
+)
+from tornado.testing import AsyncHTTPTestCase
+from tornado.web import Application, HTTPError, RequestHandler
+from tornado.wsgi import WSGIContainer
+
+import typing  # noqa: F401
+
+
+class BasicRouter(Router):
+    def find_handler(self, request, **kwargs):
+        class MessageDelegate(HTTPMessageDelegate):
+            def __init__(self, connection):
+                self.connection = connection
+
+            def finish(self):
+                self.connection.write_headers(
+                    ResponseStartLine("HTTP/1.1", 200, "OK"),
+                    HTTPHeaders({"Content-Length": "2"}),
+                    b"OK",
+                )
+                self.connection.finish()
+
+        return MessageDelegate(request.connection)
+
+
+class BasicRouterTestCase(AsyncHTTPTestCase):
+    def get_app(self):
+        return BasicRouter()
+
+    def test_basic_router(self):
+        response = self.fetch("/any_request")
+        self.assertEqual(response.body, b"OK")
+
+
+resources = {}  # type: typing.Dict[str, bytes]
+
+
+class GetResource(RequestHandler):
+    def get(self, path):
+        if path not in resources:
+            raise HTTPError(404)
+
+        self.finish(resources[path])
+
+
+class PostResource(RequestHandler):
+    def post(self, path):
+        resources[path] = self.request.body
+
+
+class HTTPMethodRouter(Router):
+    def __init__(self, app):
+        self.app = app
+
+    def find_handler(self, request, **kwargs):
+        handler = GetResource if request.method == "GET" else PostResource
+        return self.app.get_handler_delegate(request, handler, path_args=[request.path])
+
+
+class HTTPMethodRouterTestCase(AsyncHTTPTestCase):
+    def get_app(self):
+        return HTTPMethodRouter(Application())
+
+    def test_http_method_router(self):
+        response = self.fetch("/post_resource", method="POST", body="data")
+        self.assertEqual(response.code, 200)
+
+        response = self.fetch("/get_resource")
+        self.assertEqual(response.code, 404)
+
+        response = self.fetch("/post_resource")
+        self.assertEqual(response.code, 200)
+        self.assertEqual(response.body, b"data")
+
+
+def _get_named_handler(handler_name):
+    class Handler(RequestHandler):
+        def get(self, *args, **kwargs):
+            if self.application.settings.get("app_name") is not None:
+                self.write(self.application.settings["app_name"] + ": ")
+
+            self.finish(handler_name + ": " + self.reverse_url(handler_name))
+
+    return Handler
+
+
+FirstHandler = _get_named_handler("first_handler")
+SecondHandler = _get_named_handler("second_handler")
+
+
+class CustomRouter(ReversibleRouter):
+    def __init__(self):
+        super().__init__()
+        self.routes = {}  # type: typing.Dict[str, typing.Any]
+
+    def add_routes(self, routes):
+        self.routes.update(routes)
+
+    def find_handler(self, request, **kwargs):
+        if request.path in self.routes:
+            app, handler = self.routes[request.path]
+            return app.get_handler_delegate(request, handler)
+
+    def reverse_url(self, name, *args):
+        handler_path = "/" + name
+        return handler_path if handler_path in self.routes else None
+
+
+class CustomRouterTestCase(AsyncHTTPTestCase):
+    def get_app(self):
+        router = CustomRouter()
+
+        class CustomApplication(Application):
+            def reverse_url(self, name, *args):
+                return router.reverse_url(name, *args)
+
+        app1 = CustomApplication(app_name="app1")
+        app2 = CustomApplication(app_name="app2")
+
+        router.add_routes(
+            {
+                "/first_handler": (app1, FirstHandler),
+                "/second_handler": (app2, SecondHandler),
+                "/first_handler_second_app": (app2, FirstHandler),
+            }
+        )
+
+        return router
+
+    def test_custom_router(self):
+        response = self.fetch("/first_handler")
+        self.assertEqual(response.body, b"app1: first_handler: /first_handler")
+        response = self.fetch("/second_handler")
+        self.assertEqual(response.body, b"app2: second_handler: /second_handler")
+        response = self.fetch("/first_handler_second_app")
+        self.assertEqual(response.body, b"app2: first_handler: /first_handler")
+
+
+class ConnectionDelegate(HTTPServerConnectionDelegate):
+    def start_request(self, server_conn, request_conn):
+        class MessageDelegate(HTTPMessageDelegate):
+            def __init__(self, connection):
+                self.connection = connection
+
+            def finish(self):
+                response_body = b"OK"
+                self.connection.write_headers(
+                    ResponseStartLine("HTTP/1.1", 200, "OK"),
+                    HTTPHeaders({"Content-Length": str(len(response_body))}),
+                )
+                self.connection.write(response_body)
+                self.connection.finish()
+
+        return MessageDelegate(request_conn)
+
+
+class RuleRouterTest(AsyncHTTPTestCase):
+    def get_app(self):
+        app = Application()
+
+        def request_callable(request):
+            request.connection.write_headers(
+                ResponseStartLine("HTTP/1.1", 200, "OK"),
+                HTTPHeaders({"Content-Length": "2"}),
+            )
+            request.connection.write(b"OK")
+            request.connection.finish()
+
+        router = CustomRouter()
+        router.add_routes(
+            {"/nested_handler": (app, _get_named_handler("nested_handler"))}
+        )
+
+        app.add_handlers(
+            ".*",
+            [
+                (
+                    HostMatches("www.example.com"),
+                    [
+                        (
+                            PathMatches("/first_handler"),
+                            "tornado.test.routing_test.SecondHandler",
+                            {},
+                            "second_handler",
+                        )
+                    ],
+                ),
+                Rule(PathMatches("/.*handler"), router),
+                Rule(PathMatches("/first_handler"), FirstHandler, name="first_handler"),
+                Rule(PathMatches("/request_callable"), request_callable),
+                ("/connection_delegate", ConnectionDelegate()),
+            ],
+        )
+
+        return app
+
+    def test_rule_based_router(self):
+        response = self.fetch("/first_handler")
+        self.assertEqual(response.body, b"first_handler: /first_handler")
+
+        response = self.fetch("/first_handler", headers={"Host": "www.example.com"})
+        self.assertEqual(response.body, b"second_handler: /first_handler")
+
+        response = self.fetch("/nested_handler")
+        self.assertEqual(response.body, b"nested_handler: /nested_handler")
+
+        response = self.fetch("/nested_not_found_handler")
+        self.assertEqual(response.code, 404)
+
+        response = self.fetch("/connection_delegate")
+        self.assertEqual(response.body, b"OK")
+
+        response = self.fetch("/request_callable")
+        self.assertEqual(response.body, b"OK")
+
+        response = self.fetch("/404")
+        self.assertEqual(response.code, 404)
+
+
+class WSGIContainerTestCase(AsyncHTTPTestCase):
+    def get_app(self):
+        wsgi_app = WSGIContainer(self.wsgi_app)
+
+        class Handler(RequestHandler):
+            def get(self, *args, **kwargs):
+                self.finish(self.reverse_url("tornado"))
+
+        return RuleRouter(
+            [
+                (
+                    PathMatches("/tornado.*"),
+                    Application([(r"/tornado/test", Handler, {}, "tornado")]),
+                ),
+                (PathMatches("/wsgi"), wsgi_app),
+            ]
+        )
+
+    def wsgi_app(self, environ, start_response):
+        start_response("200 OK", [])
+        return [b"WSGI"]
+
+    def test_wsgi_container(self):
+        response = self.fetch("/tornado/test")
+        self.assertEqual(response.body, b"/tornado/test")
+
+        response = self.fetch("/wsgi")
+        self.assertEqual(response.body, b"WSGI")
+
+    def test_delegate_not_found(self):
+        response = self.fetch("/404")
+        self.assertEqual(response.code, 404)

.venv/Lib/site-packages/tornado/test/runtests.py

@@ -0,0 +1,241 @@
+from functools import reduce
+import gc
+import io
+import locale  # system locale module, not tornado.locale
+import logging
+import operator
+import textwrap
+import sys
+import unittest
+import warnings
+
+from tornado.httpclient import AsyncHTTPClient
+from tornado.httpserver import HTTPServer
+from tornado.netutil import Resolver
+from tornado.options import define, add_parse_callback, options
+
+
+TEST_MODULES = [
+    "tornado.httputil.doctests",
+    "tornado.iostream.doctests",
+    "tornado.util.doctests",
+    "tornado.test.asyncio_test",
+    "tornado.test.auth_test",
+    "tornado.test.autoreload_test",
+    "tornado.test.concurrent_test",
+    "tornado.test.curl_httpclient_test",
+    "tornado.test.escape_test",
+    "tornado.test.gen_test",
+    "tornado.test.http1connection_test",
+    "tornado.test.httpclient_test",
+    "tornado.test.httpserver_test",
+    "tornado.test.httputil_test",
+    "tornado.test.import_test",
+    "tornado.test.ioloop_test",
+    "tornado.test.iostream_test",
+    "tornado.test.locale_test",
+    "tornado.test.locks_test",
+    "tornado.test.netutil_test",
+    "tornado.test.log_test",
+    "tornado.test.options_test",
+    "tornado.test.process_test",
+    "tornado.test.queues_test",
+    "tornado.test.routing_test",
+    "tornado.test.simple_httpclient_test",
+    "tornado.test.tcpclient_test",
+    "tornado.test.tcpserver_test",
+    "tornado.test.template_test",
+    "tornado.test.testing_test",
+    "tornado.test.twisted_test",
+    "tornado.test.util_test",
+    "tornado.test.web_test",
+    "tornado.test.websocket_test",
+    "tornado.test.wsgi_test",
+]
+
+
+def all():
+    return unittest.defaultTestLoader.loadTestsFromNames(TEST_MODULES)
+
+
+def test_runner_factory(stderr):
+    class TornadoTextTestRunner(unittest.TextTestRunner):
+        def __init__(self, *args, **kwargs):
+            kwargs["stream"] = stderr
+            super().__init__(*args, **kwargs)
+
+        def run(self, test):
+            result = super().run(test)
+            if result.skipped:
+                skip_reasons = set(reason for (test, reason) in result.skipped)
+                self.stream.write(  # type: ignore
+                    textwrap.fill(
+                        "Some tests were skipped because: %s"
+                        % ", ".join(sorted(skip_reasons))
+                    )
+                )
+                self.stream.write("\n")  # type: ignore
+            return result
+
+    return TornadoTextTestRunner
+
+
+class LogCounter(logging.Filter):
+    """Counts the number of WARNING or higher log records."""
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.info_count = self.warning_count = self.error_count = 0
+
+    def filter(self, record):
+        if record.levelno >= logging.ERROR:
+            self.error_count += 1
+        elif record.levelno >= logging.WARNING:
+            self.warning_count += 1
+        elif record.levelno >= logging.INFO:
+            self.info_count += 1
+        return True
+
+
+class CountingStderr(io.IOBase):
+    def __init__(self, real):
+        self.real = real
+        self.byte_count = 0
+
+    def write(self, data):
+        self.byte_count += len(data)
+        return self.real.write(data)
+
+    def flush(self):
+        return self.real.flush()
+
+
+def main():
+    # Be strict about most warnings (This is set in our test running
+    # scripts to catch import-time warnings, but set it again here to
+    # be sure). This also turns on warnings that are ignored by
+    # default, including DeprecationWarnings and python 3.2's
+    # ResourceWarnings.
+    warnings.filterwarnings("error")
+    # setuptools sometimes gives ImportWarnings about things that are on
+    # sys.path even if they're not being used.
+    warnings.filterwarnings("ignore", category=ImportWarning)
+    # Tornado generally shouldn't use anything deprecated, but some of
+    # our dependencies do (last match wins).
+    warnings.filterwarnings("ignore", category=DeprecationWarning)
+    warnings.filterwarnings("error", category=DeprecationWarning, module=r"tornado\..*")
+    warnings.filterwarnings("ignore", category=PendingDeprecationWarning)
+    warnings.filterwarnings(
+        "error", category=PendingDeprecationWarning, module=r"tornado\..*"
+    )
+    # The unittest module is aggressive about deprecating redundant methods,
+    # leaving some without non-deprecated spellings that work on both
+    # 2.7 and 3.2
+    warnings.filterwarnings(
+        "ignore", category=DeprecationWarning, message="Please use assert.* instead"
+    )
+    warnings.filterwarnings(
+        "ignore",
+        category=PendingDeprecationWarning,
+        message="Please use assert.* instead",
+    )
+    # Twisted 15.0.0 triggers some warnings on py3 with -bb.
+    warnings.filterwarnings("ignore", category=BytesWarning, module=r"twisted\..*")
+    if (3,) < sys.version_info < (3, 6):
+        # Prior to 3.6, async ResourceWarnings were rather noisy
+        # and even
+        # `python3.4 -W error -c 'import asyncio; asyncio.get_event_loop()'`
+        # would generate a warning.
+        warnings.filterwarnings(
+            "ignore", category=ResourceWarning, module=r"asyncio\..*"
+        )
+    # This deprecation warning is introduced in Python 3.8 and is
+    # triggered by pycurl. Unforunately, because it is raised in the C
+    # layer it can't be filtered by module and we must match the
+    # message text instead (Tornado's C module uses PY_SSIZE_T_CLEAN
+    # so it's not at risk of running into this issue).
+    warnings.filterwarnings(
+        "ignore",
+        category=DeprecationWarning,
+        message="PY_SSIZE_T_CLEAN will be required",
+    )
+
+    logging.getLogger("tornado.access").setLevel(logging.CRITICAL)
+
+    define(
+        "httpclient",
+        type=str,
+        default=None,
+        callback=lambda s: AsyncHTTPClient.configure(
+            s, defaults=dict(allow_ipv6=False)
+        ),
+    )
+    define("httpserver", type=str, default=None, callback=HTTPServer.configure)
+    define("resolver", type=str, default=None, callback=Resolver.configure)
+    define(
+        "debug_gc",
+        type=str,
+        multiple=True,
+        help="A comma-separated list of gc module debug constants, "
+        "e.g. DEBUG_STATS or DEBUG_COLLECTABLE,DEBUG_OBJECTS",
+        callback=lambda values: gc.set_debug(
+            reduce(operator.or_, (getattr(gc, v) for v in values))
+        ),
+    )
+    define(
+        "fail-if-logs",
+        default=True,
+        help="If true, fail the tests if any log output is produced (unless captured by ExpectLog)",
+    )
+
+    def set_locale(x):
+        locale.setlocale(locale.LC_ALL, x)
+
+    define("locale", type=str, default=None, callback=set_locale)
+
+    log_counter = LogCounter()
+    add_parse_callback(lambda: logging.getLogger().handlers[0].addFilter(log_counter))
+
+    # Certain errors (especially "unclosed resource" errors raised in
+    # destructors) go directly to stderr instead of logging. Count
+    # anything written by anything but the test runner as an error.
+    orig_stderr = sys.stderr
+    counting_stderr = CountingStderr(orig_stderr)
+    sys.stderr = counting_stderr  # type: ignore
+
+    import tornado.testing
+
+    kwargs = {}
+
+    # HACK:  unittest.main will make its own changes to the warning
+    # configuration, which may conflict with the settings above
+    # or command-line flags like -bb.  Passing warnings=False
+    # suppresses this behavior, although this looks like an implementation
+    # detail.  http://bugs.python.org/issue15626
+    kwargs["warnings"] = False
+
+    kwargs["testRunner"] = test_runner_factory(orig_stderr)
+    try:
+        tornado.testing.main(**kwargs)
+    finally:
+        # The tests should run clean; consider it a failure if they
+        # logged anything at info level or above.
+        if (
+            log_counter.info_count > 0
+            or log_counter.warning_count > 0
+            or log_counter.error_count > 0
+            or counting_stderr.byte_count > 0
+        ):
+            logging.error(
+                "logged %d infos, %d warnings, %d errors, and %d bytes to stderr",
+                log_counter.info_count,
+                log_counter.warning_count,
+                log_counter.error_count,
+                counting_stderr.byte_count,
+            )
+            if options.fail_if_logs:
+                sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()

.venv/Lib/site-packages/tornado/test/simple_httpclient_test.py

@@ -0,0 +1,834 @@
+import collections
+from contextlib import closing
+import errno
+import logging
+import os
+import re
+import socket
+import ssl
+import sys
+import typing  # noqa: F401
+
+from tornado.escape import to_unicode, utf8
+from tornado import gen, version
+from tornado.httpclient import AsyncHTTPClient
+from tornado.httputil import HTTPHeaders, ResponseStartLine
+from tornado.ioloop import IOLoop
+from tornado.iostream import UnsatisfiableReadError
+from tornado.locks import Event
+from tornado.log import gen_log
+from tornado.netutil import Resolver, bind_sockets
+from tornado.simple_httpclient import (
+    SimpleAsyncHTTPClient,
+    HTTPStreamClosedError,
+    HTTPTimeoutError,
+)
+from tornado.test.httpclient_test import (
+    ChunkHandler,
+    CountdownHandler,
+    HelloWorldHandler,
+    RedirectHandler,
+    UserAgentHandler,
+)
+from tornado.test import httpclient_test
+from tornado.testing import (
+    AsyncHTTPTestCase,
+    AsyncHTTPSTestCase,
+    AsyncTestCase,
+    ExpectLog,
+    gen_test,
+)
+from tornado.test.util import skipOnTravis, skipIfNoIPv6, refusing_port
+from tornado.web import RequestHandler, Application, url, stream_request_body
+
+
+class SimpleHTTPClientCommonTestCase(httpclient_test.HTTPClientCommonTestCase):
+    def get_http_client(self):
+        client = SimpleAsyncHTTPClient(force_instance=True)
+        self.assertTrue(isinstance(client, SimpleAsyncHTTPClient))
+        return client
+
+
+class TriggerHandler(RequestHandler):
+    def initialize(self, queue, wake_callback):
+        self.queue = queue
+        self.wake_callback = wake_callback
+
+    @gen.coroutine
+    def get(self):
+        logging.debug("queuing trigger")
+        event = Event()
+        self.queue.append(event.set)
+        if self.get_argument("wake", "true") == "true":
+            self.wake_callback()
+        yield event.wait()
+
+
+class ContentLengthHandler(RequestHandler):
+    def get(self):
+        self.stream = self.detach()
+        IOLoop.current().spawn_callback(self.write_response)
+
+    @gen.coroutine
+    def write_response(self):
+        yield self.stream.write(
+            utf8(
+                "HTTP/1.0 200 OK\r\nContent-Length: %s\r\n\r\nok"
+                % self.get_argument("value")
+            )
+        )
+        self.stream.close()
+
+
+class HeadHandler(RequestHandler):
+    def head(self):
+        self.set_header("Content-Length", "7")
+
+
+class OptionsHandler(RequestHandler):
+    def options(self):
+        self.set_header("Access-Control-Allow-Origin", "*")
+        self.write("ok")
+
+
+class NoContentHandler(RequestHandler):
+    def get(self):
+        self.set_status(204)
+        self.finish()
+
+
+class SeeOtherPostHandler(RequestHandler):
+    def post(self):
+        redirect_code = int(self.request.body)
+        assert redirect_code in (302, 303), "unexpected body %r" % self.request.body
+        self.set_header("Location", "/see_other_get")
+        self.set_status(redirect_code)
+
+
+class SeeOtherGetHandler(RequestHandler):
+    def get(self):
+        if self.request.body:
+            raise Exception("unexpected body %r" % self.request.body)
+        self.write("ok")
+
+
+class HostEchoHandler(RequestHandler):
+    def get(self):
+        self.write(self.request.headers["Host"])
+
+
+class NoContentLengthHandler(RequestHandler):
+    def get(self):
+        if self.request.version.startswith("HTTP/1"):
+            # Emulate the old HTTP/1.0 behavior of returning a body with no
+            # content-length.  Tornado handles content-length at the framework
+            # level so we have to go around it.
+            stream = self.detach()
+            stream.write(b"HTTP/1.0 200 OK\r\n\r\n" b"hello")
+            stream.close()
+        else:
+            self.finish("HTTP/1 required")
+
+
+class EchoPostHandler(RequestHandler):
+    def post(self):
+        self.write(self.request.body)
+
+
+@stream_request_body
+class RespondInPrepareHandler(RequestHandler):
+    def prepare(self):
+        self.set_status(403)
+        self.finish("forbidden")
+
+
+class SimpleHTTPClientTestMixin(object):
+    def create_client(self, **kwargs):
+        raise NotImplementedError()
+
+    def get_app(self: typing.Any):
+        # callable objects to finish pending /trigger requests
+        self.triggers = (
+            collections.deque()
+        )  # type: typing.Deque[typing.Callable[[], None]]
+        return Application(
+            [
+                url(
+                    "/trigger",
+                    TriggerHandler,
+                    dict(queue=self.triggers, wake_callback=self.stop),
+                ),
+                url("/chunk", ChunkHandler),
+                url("/countdown/([0-9]+)", CountdownHandler, name="countdown"),
+                url("/hello", HelloWorldHandler),
+                url("/content_length", ContentLengthHandler),
+                url("/head", HeadHandler),
+                url("/options", OptionsHandler),
+                url("/no_content", NoContentHandler),
+                url("/see_other_post", SeeOtherPostHandler),
+                url("/see_other_get", SeeOtherGetHandler),
+                url("/host_echo", HostEchoHandler),
+                url("/no_content_length", NoContentLengthHandler),
+                url("/echo_post", EchoPostHandler),
+                url("/respond_in_prepare", RespondInPrepareHandler),
+                url("/redirect", RedirectHandler),
+                url("/user_agent", UserAgentHandler),
+            ],
+            gzip=True,
+        )
+
+    def test_singleton(self: typing.Any):
+        # Class "constructor" reuses objects on the same IOLoop
+        self.assertTrue(SimpleAsyncHTTPClient() is SimpleAsyncHTTPClient())
+        # unless force_instance is used
+        self.assertTrue(
+            SimpleAsyncHTTPClient() is not SimpleAsyncHTTPClient(force_instance=True)
+        )
+        # different IOLoops use different objects
+        with closing(IOLoop()) as io_loop2:
+
+            async def make_client():
+                await gen.sleep(0)
+                return SimpleAsyncHTTPClient()
+
+            client1 = self.io_loop.run_sync(make_client)
+            client2 = io_loop2.run_sync(make_client)
+            self.assertTrue(client1 is not client2)
+
+    def test_connection_limit(self: typing.Any):
+        with closing(self.create_client(max_clients=2)) as client:
+            self.assertEqual(client.max_clients, 2)
+            seen = []
+            # Send 4 requests.  Two can be sent immediately, while the others
+            # will be queued
+            for i in range(4):
+
+                def cb(fut, i=i):
+                    seen.append(i)
+                    self.stop()
+
+                client.fetch(self.get_url("/trigger")).add_done_callback(cb)
+            self.wait(condition=lambda: len(self.triggers) == 2)
+            self.assertEqual(len(client.queue), 2)
+
+            # Finish the first two requests and let the next two through
+            self.triggers.popleft()()
+            self.triggers.popleft()()
+            self.wait(condition=lambda: (len(self.triggers) == 2 and len(seen) == 2))
+            self.assertEqual(set(seen), set([0, 1]))
+            self.assertEqual(len(client.queue), 0)
+
+            # Finish all the pending requests
+            self.triggers.popleft()()
+            self.triggers.popleft()()
+            self.wait(condition=lambda: len(seen) == 4)
+            self.assertEqual(set(seen), set([0, 1, 2, 3]))
+            self.assertEqual(len(self.triggers), 0)
+
+    @gen_test
+    def test_redirect_connection_limit(self: typing.Any):
+        # following redirects should not consume additional connections
+        with closing(self.create_client(max_clients=1)) as client:
+            response = yield client.fetch(self.get_url("/countdown/3"), max_redirects=3)
+            response.rethrow()
+
+    def test_max_redirects(self: typing.Any):
+        response = self.fetch("/countdown/5", max_redirects=3)
+        self.assertEqual(302, response.code)
+        # We requested 5, followed three redirects for 4, 3, 2, then the last
+        # unfollowed redirect is to 1.
+        self.assertTrue(response.request.url.endswith("/countdown/5"))
+        self.assertTrue(response.effective_url.endswith("/countdown/2"))
+        self.assertTrue(response.headers["Location"].endswith("/countdown/1"))
+
+    def test_header_reuse(self: typing.Any):
+        # Apps may reuse a headers object if they are only passing in constant
+        # headers like user-agent.  The header object should not be modified.
+        headers = HTTPHeaders({"User-Agent": "Foo"})
+        self.fetch("/hello", headers=headers)
+        self.assertEqual(list(headers.get_all()), [("User-Agent", "Foo")])
+
+    def test_default_user_agent(self: typing.Any):
+        response = self.fetch("/user_agent", method="GET")
+        self.assertEqual(200, response.code)
+        self.assertEqual(response.body.decode(), "Tornado/{}".format(version))
+
+    def test_see_other_redirect(self: typing.Any):
+        for code in (302, 303):
+            response = self.fetch("/see_other_post", method="POST", body="%d" % code)
+            self.assertEqual(200, response.code)
+            self.assertTrue(response.request.url.endswith("/see_other_post"))
+            self.assertTrue(response.effective_url.endswith("/see_other_get"))
+            # request is the original request, is a POST still
+            self.assertEqual("POST", response.request.method)
+
+    @skipOnTravis
+    @gen_test
+    def test_connect_timeout(self: typing.Any):
+        timeout = 0.1
+
+        cleanup_event = Event()
+        test = self
+
+        class TimeoutResolver(Resolver):
+            async def resolve(self, *args, **kwargs):
+                await cleanup_event.wait()
+                # Return something valid so the test doesn't raise during shutdown.
+                return [(socket.AF_INET, ("127.0.0.1", test.get_http_port()))]
+
+        with closing(self.create_client(resolver=TimeoutResolver())) as client:
+            with self.assertRaises(HTTPTimeoutError):
+                yield client.fetch(
+                    self.get_url("/hello"),
+                    connect_timeout=timeout,
+                    request_timeout=3600,
+                    raise_error=True,
+                )
+
+        # Let the hanging coroutine clean up after itself. We need to
+        # wait more than a single IOLoop iteration for the SSL case,
+        # which logs errors on unexpected EOF.
+        cleanup_event.set()
+        yield gen.sleep(0.2)
+
+    @skipOnTravis
+    def test_request_timeout(self: typing.Any):
+        timeout = 0.1
+        if os.name == "nt":
+            timeout = 0.5
+
+        with self.assertRaises(HTTPTimeoutError):
+            self.fetch("/trigger?wake=false", request_timeout=timeout, raise_error=True)
+        # trigger the hanging request to let it clean up after itself
+        self.triggers.popleft()()
+        self.io_loop.run_sync(lambda: gen.sleep(0))
+
+    @skipIfNoIPv6
+    def test_ipv6(self: typing.Any):
+        [sock] = bind_sockets(0, "::1", family=socket.AF_INET6)
+        port = sock.getsockname()[1]
+        self.http_server.add_socket(sock)
+        url = "%s://[::1]:%d/hello" % (self.get_protocol(), port)
+
+        # ipv6 is currently enabled by default but can be disabled
+        with self.assertRaises(Exception):
+            self.fetch(url, allow_ipv6=False, raise_error=True)
+
+        response = self.fetch(url)
+        self.assertEqual(response.body, b"Hello world!")
+
+    def test_multiple_content_length_accepted(self: typing.Any):
+        response = self.fetch("/content_length?value=2,2")
+        self.assertEqual(response.body, b"ok")
+        response = self.fetch("/content_length?value=2,%202,2")
+        self.assertEqual(response.body, b"ok")
+
+        with ExpectLog(
+            gen_log, ".*Multiple unequal Content-Lengths", level=logging.INFO
+        ):
+            with self.assertRaises(HTTPStreamClosedError):
+                self.fetch("/content_length?value=2,4", raise_error=True)
+            with self.assertRaises(HTTPStreamClosedError):
+                self.fetch("/content_length?value=2,%202,3", raise_error=True)
+
+    def test_head_request(self: typing.Any):
+        response = self.fetch("/head", method="HEAD")
+        self.assertEqual(response.code, 200)
+        self.assertEqual(response.headers["content-length"], "7")
+        self.assertFalse(response.body)
+
+    def test_options_request(self: typing.Any):
+        response = self.fetch("/options", method="OPTIONS")
+        self.assertEqual(response.code, 200)
+        self.assertEqual(response.headers["content-length"], "2")
+        self.assertEqual(response.headers["access-control-allow-origin"], "*")
+        self.assertEqual(response.body, b"ok")
+
+    def test_no_content(self: typing.Any):
+        response = self.fetch("/no_content")
+        self.assertEqual(response.code, 204)
+        # 204 status shouldn't have a content-length
+        #
+        # Tests with a content-length header are included below
+        # in HTTP204NoContentTestCase.
+        self.assertNotIn("Content-Length", response.headers)
+
+    def test_host_header(self: typing.Any):
+        host_re = re.compile(b"^127.0.0.1:[0-9]+$")
+        response = self.fetch("/host_echo")
+        self.assertTrue(host_re.match(response.body))
+
+        url = self.get_url("/host_echo").replace("http://", "http://me:secret@")
+        response = self.fetch(url)
+        self.assertTrue(host_re.match(response.body), response.body)
+
+    def test_connection_refused(self: typing.Any):
+        cleanup_func, port = refusing_port()
+        self.addCleanup(cleanup_func)
+        with ExpectLog(gen_log, ".*", required=False):
+            with self.assertRaises(socket.error) as cm:
+                self.fetch("http://127.0.0.1:%d/" % port, raise_error=True)
+
+        if sys.platform != "cygwin":
+            # cygwin returns EPERM instead of ECONNREFUSED here
+            contains_errno = str(errno.ECONNREFUSED) in str(cm.exception)
+            if not contains_errno and hasattr(errno, "WSAECONNREFUSED"):
+                contains_errno = str(errno.WSAECONNREFUSED) in str(  # type: ignore
+                    cm.exception
+                )
+            self.assertTrue(contains_errno, cm.exception)
+            # This is usually "Connection refused".
+            # On windows, strerror is broken and returns "Unknown error".
+            expected_message = os.strerror(errno.ECONNREFUSED)
+            self.assertTrue(expected_message in str(cm.exception), cm.exception)
+
+    def test_queue_timeout(self: typing.Any):
+        with closing(self.create_client(max_clients=1)) as client:
+            # Wait for the trigger request to block, not complete.
+            fut1 = client.fetch(self.get_url("/trigger"), request_timeout=10)
+            self.wait()
+            with self.assertRaises(HTTPTimeoutError) as cm:
+                self.io_loop.run_sync(
+                    lambda: client.fetch(
+                        self.get_url("/hello"), connect_timeout=0.1, raise_error=True
+                    )
+                )
+
+            self.assertEqual(str(cm.exception), "Timeout in request queue")
+            self.triggers.popleft()()
+            self.io_loop.run_sync(lambda: fut1)
+
+    def test_no_content_length(self: typing.Any):
+        response = self.fetch("/no_content_length")
+        if response.body == b"HTTP/1 required":
+            self.skipTest("requires HTTP/1.x")
+        else:
+            self.assertEqual(b"hello", response.body)
+
+    def sync_body_producer(self, write):
+        write(b"1234")
+        write(b"5678")
+
+    @gen.coroutine
+    def async_body_producer(self, write):
+        yield write(b"1234")
+        yield gen.moment
+        yield write(b"5678")
+
+    def test_sync_body_producer_chunked(self: typing.Any):
+        response = self.fetch(
+            "/echo_post", method="POST", body_producer=self.sync_body_producer
+        )
+        response.rethrow()
+        self.assertEqual(response.body, b"12345678")
+
+    def test_sync_body_producer_content_length(self: typing.Any):
+        response = self.fetch(
+            "/echo_post",
+            method="POST",
+            body_producer=self.sync_body_producer,
+            headers={"Content-Length": "8"},
+        )
+        response.rethrow()
+        self.assertEqual(response.body, b"12345678")
+
+    def test_async_body_producer_chunked(self: typing.Any):
+        response = self.fetch(
+            "/echo_post", method="POST", body_producer=self.async_body_producer
+        )
+        response.rethrow()
+        self.assertEqual(response.body, b"12345678")
+
+    def test_async_body_producer_content_length(self: typing.Any):
+        response = self.fetch(
+            "/echo_post",
+            method="POST",
+            body_producer=self.async_body_producer,
+            headers={"Content-Length": "8"},
+        )
+        response.rethrow()
+        self.assertEqual(response.body, b"12345678")
+
+    def test_native_body_producer_chunked(self: typing.Any):
+        async def body_producer(write):
+            await write(b"1234")
+            import asyncio
+
+            await asyncio.sleep(0)
+            await write(b"5678")
+
+        response = self.fetch("/echo_post", method="POST", body_producer=body_producer)
+        response.rethrow()
+        self.assertEqual(response.body, b"12345678")
+
+    def test_native_body_producer_content_length(self: typing.Any):
+        async def body_producer(write):
+            await write(b"1234")
+            import asyncio
+
+            await asyncio.sleep(0)
+            await write(b"5678")
+
+        response = self.fetch(
+            "/echo_post",
+            method="POST",
+            body_producer=body_producer,
+            headers={"Content-Length": "8"},
+        )
+        response.rethrow()
+        self.assertEqual(response.body, b"12345678")
+
+    def test_100_continue(self: typing.Any):
+        response = self.fetch(
+            "/echo_post", method="POST", body=b"1234", expect_100_continue=True
+        )
+        self.assertEqual(response.body, b"1234")
+
+    def test_100_continue_early_response(self: typing.Any):
+        def body_producer(write):
+            raise Exception("should not be called")
+
+        response = self.fetch(
+            "/respond_in_prepare",
+            method="POST",
+            body_producer=body_producer,
+            expect_100_continue=True,
+        )
+        self.assertEqual(response.code, 403)
+
+    def test_streaming_follow_redirects(self: typing.Any):
+        # When following redirects, header and streaming callbacks
+        # should only be called for the final result.
+        # TODO(bdarnell): this test belongs in httpclient_test instead of
+        # simple_httpclient_test, but it fails with the version of libcurl
+        # available on travis-ci. Move it when that has been upgraded
+        # or we have a better framework to skip tests based on curl version.
+        headers = []  # type: typing.List[str]
+        chunk_bytes = []  # type: typing.List[bytes]
+        self.fetch(
+            "/redirect?url=/hello",
+            header_callback=headers.append,
+            streaming_callback=chunk_bytes.append,
+        )
+        chunks = list(map(to_unicode, chunk_bytes))
+        self.assertEqual(chunks, ["Hello world!"])
+        # Make sure we only got one set of headers.
+        num_start_lines = len([h for h in headers if h.startswith("HTTP/")])
+        self.assertEqual(num_start_lines, 1)
+
+
+class SimpleHTTPClientTestCase(SimpleHTTPClientTestMixin, AsyncHTTPTestCase):
+    def setUp(self):
+        super().setUp()
+        self.http_client = self.create_client()
+
+    def create_client(self, **kwargs):
+        return SimpleAsyncHTTPClient(force_instance=True, **kwargs)
+
+
+class SimpleHTTPSClientTestCase(SimpleHTTPClientTestMixin, AsyncHTTPSTestCase):
+    def setUp(self):
+        super().setUp()
+        self.http_client = self.create_client()
+
+    def create_client(self, **kwargs):
+        return SimpleAsyncHTTPClient(
+            force_instance=True, defaults=dict(validate_cert=False), **kwargs
+        )
+
+    def test_ssl_options(self):
+        resp = self.fetch("/hello", ssl_options={})
+        self.assertEqual(resp.body, b"Hello world!")
+
+    def test_ssl_context(self):
+        resp = self.fetch("/hello", ssl_options=ssl.SSLContext(ssl.PROTOCOL_SSLv23))
+        self.assertEqual(resp.body, b"Hello world!")
+
+    def test_ssl_options_handshake_fail(self):
+        with ExpectLog(gen_log, "SSL Error|Uncaught exception", required=False):
+            with self.assertRaises(ssl.SSLError):
+                self.fetch(
+                    "/hello",
+                    ssl_options=dict(cert_reqs=ssl.CERT_REQUIRED),
+                    raise_error=True,
+                )
+
+    def test_ssl_context_handshake_fail(self):
+        with ExpectLog(gen_log, "SSL Error|Uncaught exception"):
+            ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
+            ctx.verify_mode = ssl.CERT_REQUIRED
+            with self.assertRaises(ssl.SSLError):
+                self.fetch("/hello", ssl_options=ctx, raise_error=True)
+
+    def test_error_logging(self):
+        # No stack traces are logged for SSL errors (in this case,
+        # failure to validate the testing self-signed cert).
+        # The SSLError is exposed through ssl.SSLError.
+        with ExpectLog(gen_log, ".*") as expect_log:
+            with self.assertRaises(ssl.SSLError):
+                self.fetch("/", validate_cert=True, raise_error=True)
+        self.assertFalse(expect_log.logged_stack)
+
+
+class CreateAsyncHTTPClientTestCase(AsyncTestCase):
+    def setUp(self):
+        super().setUp()
+        self.saved = AsyncHTTPClient._save_configuration()
+
+    def tearDown(self):
+        AsyncHTTPClient._restore_configuration(self.saved)
+        super().tearDown()
+
+    def test_max_clients(self):
+        AsyncHTTPClient.configure(SimpleAsyncHTTPClient)
+        with closing(AsyncHTTPClient(force_instance=True)) as client:
+            self.assertEqual(client.max_clients, 10)  # type: ignore
+        with closing(AsyncHTTPClient(max_clients=11, force_instance=True)) as client:
+            self.assertEqual(client.max_clients, 11)  # type: ignore
+
+        # Now configure max_clients statically and try overriding it
+        # with each way max_clients can be passed
+        AsyncHTTPClient.configure(SimpleAsyncHTTPClient, max_clients=12)
+        with closing(AsyncHTTPClient(force_instance=True)) as client:
+            self.assertEqual(client.max_clients, 12)  # type: ignore
+        with closing(AsyncHTTPClient(max_clients=13, force_instance=True)) as client:
+            self.assertEqual(client.max_clients, 13)  # type: ignore
+        with closing(AsyncHTTPClient(max_clients=14, force_instance=True)) as client:
+            self.assertEqual(client.max_clients, 14)  # type: ignore
+
+
+class HTTP100ContinueTestCase(AsyncHTTPTestCase):
+    def respond_100(self, request):
+        self.http1 = request.version.startswith("HTTP/1.")
+        if not self.http1:
+            request.connection.write_headers(
+                ResponseStartLine("", 200, "OK"), HTTPHeaders()
+            )
+            request.connection.finish()
+            return
+        self.request = request
+        fut = self.request.connection.stream.write(b"HTTP/1.1 100 CONTINUE\r\n\r\n")
+        fut.add_done_callback(self.respond_200)
+
+    def respond_200(self, fut):
+        fut.result()
+        fut = self.request.connection.stream.write(
+            b"HTTP/1.1 200 OK\r\nContent-Length: 1\r\n\r\nA"
+        )
+        fut.add_done_callback(lambda f: self.request.connection.stream.close())
+
+    def get_app(self):
+        # Not a full Application, but works as an HTTPServer callback
+        return self.respond_100
+
+    def test_100_continue(self):
+        res = self.fetch("/")
+        if not self.http1:
+            self.skipTest("requires HTTP/1.x")
+        self.assertEqual(res.body, b"A")
+
+
+class HTTP204NoContentTestCase(AsyncHTTPTestCase):
+    def respond_204(self, request):
+        self.http1 = request.version.startswith("HTTP/1.")
+        if not self.http1:
+            # Close the request cleanly in HTTP/2; it will be skipped anyway.
+            request.connection.write_headers(
+                ResponseStartLine("", 200, "OK"), HTTPHeaders()
+            )
+            request.connection.finish()
+            return
+
+        # A 204 response never has a body, even if doesn't have a content-length
+        # (which would otherwise mean read-until-close).  We simulate here a
+        # server that sends no content length and does not close the connection.
+        #
+        # Tests of a 204 response with no Content-Length header are included
+        # in SimpleHTTPClientTestMixin.
+        stream = request.connection.detach()
+        stream.write(b"HTTP/1.1 204 No content\r\n")
+        if request.arguments.get("error", [False])[-1]:
+            stream.write(b"Content-Length: 5\r\n")
+        else:
+            stream.write(b"Content-Length: 0\r\n")
+        stream.write(b"\r\n")
+        stream.close()
+
+    def get_app(self):
+        return self.respond_204
+
+    def test_204_no_content(self):
+        resp = self.fetch("/")
+        if not self.http1:
+            self.skipTest("requires HTTP/1.x")
+        self.assertEqual(resp.code, 204)
+        self.assertEqual(resp.body, b"")
+
+    def test_204_invalid_content_length(self):
+        # 204 status with non-zero content length is malformed
+        with ExpectLog(
+            gen_log, ".*Response with code 204 should not have body", level=logging.INFO
+        ):
+            with self.assertRaises(HTTPStreamClosedError):
+                self.fetch("/?error=1", raise_error=True)
+                if not self.http1:
+                    self.skipTest("requires HTTP/1.x")
+                if self.http_client.configured_class != SimpleAsyncHTTPClient:
+                    self.skipTest("curl client accepts invalid headers")
+
+
+class HostnameMappingTestCase(AsyncHTTPTestCase):
+    def setUp(self):
+        super().setUp()
+        self.http_client = SimpleAsyncHTTPClient(
+            hostname_mapping={
+                "www.example.com": "127.0.0.1",
+                ("foo.example.com", 8000): ("127.0.0.1", self.get_http_port()),
+            }
+        )
+
+    def get_app(self):
+        return Application([url("/hello", HelloWorldHandler)])
+
+    def test_hostname_mapping(self):
+        response = self.fetch("http://www.example.com:%d/hello" % self.get_http_port())
+        response.rethrow()
+        self.assertEqual(response.body, b"Hello world!")
+
+    def test_port_mapping(self):
+        response = self.fetch("http://foo.example.com:8000/hello")
+        response.rethrow()
+        self.assertEqual(response.body, b"Hello world!")
+
+
+class ResolveTimeoutTestCase(AsyncHTTPTestCase):
+    def setUp(self):
+        self.cleanup_event = Event()
+        test = self
+
+        # Dummy Resolver subclass that never finishes.
+        class BadResolver(Resolver):
+            @gen.coroutine
+            def resolve(self, *args, **kwargs):
+                yield test.cleanup_event.wait()
+                # Return something valid so the test doesn't raise during cleanup.
+                return [(socket.AF_INET, ("127.0.0.1", test.get_http_port()))]
+
+        super().setUp()
+        self.http_client = SimpleAsyncHTTPClient(resolver=BadResolver())
+
+    def get_app(self):
+        return Application([url("/hello", HelloWorldHandler)])
+
+    def test_resolve_timeout(self):
+        with self.assertRaises(HTTPTimeoutError):
+            self.fetch("/hello", connect_timeout=0.1, raise_error=True)
+
+        # Let the hanging coroutine clean up after itself
+        self.cleanup_event.set()
+        self.io_loop.run_sync(lambda: gen.sleep(0))
+
+
+class MaxHeaderSizeTest(AsyncHTTPTestCase):
+    def get_app(self):
+        class SmallHeaders(RequestHandler):
+            def get(self):
+                self.set_header("X-Filler", "a" * 100)
+                self.write("ok")
+
+        class LargeHeaders(RequestHandler):
+            def get(self):
+                self.set_header("X-Filler", "a" * 1000)
+                self.write("ok")
+
+        return Application([("/small", SmallHeaders), ("/large", LargeHeaders)])
+
+    def get_http_client(self):
+        return SimpleAsyncHTTPClient(max_header_size=1024)
+
+    def test_small_headers(self):
+        response = self.fetch("/small")
+        response.rethrow()
+        self.assertEqual(response.body, b"ok")
+
+    def test_large_headers(self):
+        with ExpectLog(gen_log, "Unsatisfiable read", level=logging.INFO):
+            with self.assertRaises(UnsatisfiableReadError):
+                self.fetch("/large", raise_error=True)
+
+
+class MaxBodySizeTest(AsyncHTTPTestCase):
+    def get_app(self):
+        class SmallBody(RequestHandler):
+            def get(self):
+                self.write("a" * 1024 * 64)
+
+        class LargeBody(RequestHandler):
+            def get(self):
+                self.write("a" * 1024 * 100)
+
+        return Application([("/small", SmallBody), ("/large", LargeBody)])
+
+    def get_http_client(self):
+        return SimpleAsyncHTTPClient(max_body_size=1024 * 64)
+
+    def test_small_body(self):
+        response = self.fetch("/small")
+        response.rethrow()
+        self.assertEqual(response.body, b"a" * 1024 * 64)
+
+    def test_large_body(self):
+        with ExpectLog(
+            gen_log,
+            "Malformed HTTP message from None: Content-Length too long",
+            level=logging.INFO,
+        ):
+            with self.assertRaises(HTTPStreamClosedError):
+                self.fetch("/large", raise_error=True)
+
+
+class MaxBufferSizeTest(AsyncHTTPTestCase):
+    def get_app(self):
+        class LargeBody(RequestHandler):
+            def get(self):
+                self.write("a" * 1024 * 100)
+
+        return Application([("/large", LargeBody)])
+
+    def get_http_client(self):
+        # 100KB body with 64KB buffer
+        return SimpleAsyncHTTPClient(
+            max_body_size=1024 * 100, max_buffer_size=1024 * 64
+        )
+
+    def test_large_body(self):
+        response = self.fetch("/large")
+        response.rethrow()
+        self.assertEqual(response.body, b"a" * 1024 * 100)
+
+
+class ChunkedWithContentLengthTest(AsyncHTTPTestCase):
+    def get_app(self):
+        class ChunkedWithContentLength(RequestHandler):
+            def get(self):
+                # Add an invalid Transfer-Encoding to the response
+                self.set_header("Transfer-Encoding", "chunked")
+                self.write("Hello world")
+
+        return Application([("/chunkwithcl", ChunkedWithContentLength)])
+
+    def get_http_client(self):
+        return SimpleAsyncHTTPClient()
+
+    def test_chunked_with_content_length(self):
+        # Make sure the invalid headers are detected
+        with ExpectLog(
+            gen_log,
+            (
+                "Malformed HTTP message from None: Response "
+                "with both Transfer-Encoding and Content-Length"
+            ),
+            level=logging.INFO,
+        ):
+            with self.assertRaises(HTTPStreamClosedError):
+                self.fetch("/chunkwithcl", raise_error=True)

.venv/Lib/site-packages/tornado/test/static/dir/index.html

@@ -0,0 +1 @@
+this is the index

.venv/Lib/site-packages/tornado/test/static/robots.txt

@@ -0,0 +1,2 @@
+User-agent: *
+Disallow: /

.venv/Lib/site-packages/tornado/test/static/sample.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0"?>
+<data>
+    <country name="Liechtenstein">
+        <rank>1</rank>
+        <year>2008</year>
+        <gdppc>141100</gdppc>
+        <neighbor name="Austria" direction="E"/>
+        <neighbor name="Switzerland" direction="W"/>
+    </country>
+    <country name="Singapore">
+        <rank>4</rank>
+        <year>2011</year>
+        <gdppc>59900</gdppc>
+        <neighbor name="Malaysia" direction="N"/>
+    </country>
+    <country name="Panama">
+        <rank>68</rank>
+        <year>2011</year>
+        <gdppc>13600</gdppc>
+        <neighbor name="Costa Rica" direction="W"/>
+        <neighbor name="Colombia" direction="E"/>
+    </country>
+</data>

.venv/Lib/site-packages/tornado/test/static_foo.txt

@@ -0,0 +1,2 @@
+This file should not be served by StaticFileHandler even though
+its name starts with "static".

.venv/Lib/site-packages/tornado/test/tcpclient_test.py

@@ -0,0 +1,438 @@
+#
+# Copyright 2014 Facebook
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+from contextlib import closing
+import getpass
+import os
+import socket
+import unittest
+
+from tornado.concurrent import Future
+from tornado.netutil import bind_sockets, Resolver
+from tornado.queues import Queue
+from tornado.tcpclient import TCPClient, _Connector
+from tornado.tcpserver import TCPServer
+from tornado.testing import AsyncTestCase, gen_test
+from tornado.test.util import skipIfNoIPv6, refusing_port, skipIfNonUnix
+from tornado.gen import TimeoutError
+
+import typing
+
+if typing.TYPE_CHECKING:
+    from tornado.iostream import IOStream  # noqa: F401
+    from typing import List, Dict, Tuple  # noqa: F401
+
+# Fake address families for testing.  Used in place of AF_INET
+# and AF_INET6 because some installations do not have AF_INET6.
+AF1, AF2 = 1, 2
+
+
+class TestTCPServer(TCPServer):
+    def __init__(self, family):
+        super().__init__()
+        self.streams = []  # type: List[IOStream]
+        self.queue = Queue()  # type: Queue[IOStream]
+        sockets = bind_sockets(0, "localhost", family)
+        self.add_sockets(sockets)
+        self.port = sockets[0].getsockname()[1]
+
+    def handle_stream(self, stream, address):
+        self.streams.append(stream)
+        self.queue.put(stream)
+
+    def stop(self):
+        super().stop()
+        for stream in self.streams:
+            stream.close()
+
+
+class TCPClientTest(AsyncTestCase):
+    def setUp(self):
+        super().setUp()
+        self.server = None
+        self.client = TCPClient()
+
+    def start_server(self, family):
+        if family == socket.AF_UNSPEC and "TRAVIS" in os.environ:
+            self.skipTest("dual-stack servers often have port conflicts on travis")
+        self.server = TestTCPServer(family)
+        return self.server.port
+
+    def stop_server(self):
+        if self.server is not None:
+            self.server.stop()
+            self.server = None
+
+    def tearDown(self):
+        self.client.close()
+        self.stop_server()
+        super().tearDown()
+
+    def skipIfLocalhostV4(self):
+        # The port used here doesn't matter, but some systems require it
+        # to be non-zero if we do not also pass AI_PASSIVE.
+        addrinfo = self.io_loop.run_sync(lambda: Resolver().resolve("localhost", 80))
+        families = set(addr[0] for addr in addrinfo)
+        if socket.AF_INET6 not in families:
+            self.skipTest("localhost does not resolve to ipv6")
+
+    @gen_test
+    def do_test_connect(self, family, host, source_ip=None, source_port=None):
+        port = self.start_server(family)
+        stream = yield self.client.connect(
+            host, port, source_ip=source_ip, source_port=source_port
+        )
+        assert self.server is not None
+        server_stream = yield self.server.queue.get()
+        with closing(stream):
+            stream.write(b"hello")
+            data = yield server_stream.read_bytes(5)
+            self.assertEqual(data, b"hello")
+
+    def test_connect_ipv4_ipv4(self):
+        self.do_test_connect(socket.AF_INET, "127.0.0.1")
+
+    def test_connect_ipv4_dual(self):
+        self.do_test_connect(socket.AF_INET, "localhost")
+
+    @skipIfNoIPv6
+    def test_connect_ipv6_ipv6(self):
+        self.skipIfLocalhostV4()
+        self.do_test_connect(socket.AF_INET6, "::1")
+
+    @skipIfNoIPv6
+    def test_connect_ipv6_dual(self):
+        self.skipIfLocalhostV4()
+        if Resolver.configured_class().__name__.endswith("TwistedResolver"):
+            self.skipTest("TwistedResolver does not support multiple addresses")
+        self.do_test_connect(socket.AF_INET6, "localhost")
+
+    def test_connect_unspec_ipv4(self):
+        self.do_test_connect(socket.AF_UNSPEC, "127.0.0.1")
+
+    @skipIfNoIPv6
+    def test_connect_unspec_ipv6(self):
+        self.skipIfLocalhostV4()
+        self.do_test_connect(socket.AF_UNSPEC, "::1")
+
+    def test_connect_unspec_dual(self):
+        self.do_test_connect(socket.AF_UNSPEC, "localhost")
+
+    @gen_test
+    def test_refused_ipv4(self):
+        cleanup_func, port = refusing_port()
+        self.addCleanup(cleanup_func)
+        with self.assertRaises(IOError):
+            yield self.client.connect("127.0.0.1", port)
+
+    def test_source_ip_fail(self):
+        """Fail when trying to use the source IP Address '8.8.8.8'.
+        """
+        self.assertRaises(
+            socket.error,
+            self.do_test_connect,
+            socket.AF_INET,
+            "127.0.0.1",
+            source_ip="8.8.8.8",
+        )
+
+    def test_source_ip_success(self):
+        """Success when trying to use the source IP Address '127.0.0.1'.
+        """
+        self.do_test_connect(socket.AF_INET, "127.0.0.1", source_ip="127.0.0.1")
+
+    @skipIfNonUnix
+    def test_source_port_fail(self):
+        """Fail when trying to use source port 1.
+        """
+        if getpass.getuser() == "root":
+            # Root can use any port so we can't easily force this to fail.
+            # This is mainly relevant for docker.
+            self.skipTest("running as root")
+        self.assertRaises(
+            socket.error,
+            self.do_test_connect,
+            socket.AF_INET,
+            "127.0.0.1",
+            source_port=1,
+        )
+
+    @gen_test
+    def test_connect_timeout(self):
+        timeout = 0.05
+
+        class TimeoutResolver(Resolver):
+            def resolve(self, *args, **kwargs):
+                return Future()  # never completes
+
+        with self.assertRaises(TimeoutError):
+            yield TCPClient(resolver=TimeoutResolver()).connect(
+                "1.2.3.4", 12345, timeout=timeout
+            )
+
+
+class TestConnectorSplit(unittest.TestCase):
+    def test_one_family(self):
+        # These addresses aren't in the right format, but split doesn't care.
+        primary, secondary = _Connector.split([(AF1, "a"), (AF1, "b")])
+        self.assertEqual(primary, [(AF1, "a"), (AF1, "b")])
+        self.assertEqual(secondary, [])
+
+    def test_mixed(self):
+        primary, secondary = _Connector.split(
+            [(AF1, "a"), (AF2, "b"), (AF1, "c"), (AF2, "d")]
+        )
+        self.assertEqual(primary, [(AF1, "a"), (AF1, "c")])
+        self.assertEqual(secondary, [(AF2, "b"), (AF2, "d")])
+
+
+class ConnectorTest(AsyncTestCase):
+    class FakeStream(object):
+        def __init__(self):
+            self.closed = False
+
+        def close(self):
+            self.closed = True
+
+    def setUp(self):
+        super().setUp()
+        self.connect_futures = (
+            {}
+        )  # type: Dict[Tuple[int, typing.Any], Future[ConnectorTest.FakeStream]]
+        self.streams = {}  # type: Dict[typing.Any, ConnectorTest.FakeStream]
+        self.addrinfo = [(AF1, "a"), (AF1, "b"), (AF2, "c"), (AF2, "d")]
+
+    def tearDown(self):
+        # Unless explicitly checked (and popped) in the test, we shouldn't
+        # be closing any streams
+        for stream in self.streams.values():
+            self.assertFalse(stream.closed)
+        super().tearDown()
+
+    def create_stream(self, af, addr):
+        stream = ConnectorTest.FakeStream()
+        self.streams[addr] = stream
+        future = Future()  # type: Future[ConnectorTest.FakeStream]
+        self.connect_futures[(af, addr)] = future
+        return stream, future
+
+    def assert_pending(self, *keys):
+        self.assertEqual(sorted(self.connect_futures.keys()), sorted(keys))
+
+    def resolve_connect(self, af, addr, success):
+        future = self.connect_futures.pop((af, addr))
+        if success:
+            future.set_result(self.streams[addr])
+        else:
+            self.streams.pop(addr)
+            future.set_exception(IOError())
+        # Run the loop to allow callbacks to be run.
+        self.io_loop.add_callback(self.stop)
+        self.wait()
+
+    def assert_connector_streams_closed(self, conn):
+        for stream in conn.streams:
+            self.assertTrue(stream.closed)
+
+    def start_connect(self, addrinfo):
+        conn = _Connector(addrinfo, self.create_stream)
+        # Give it a huge timeout; we'll trigger timeouts manually.
+        future = conn.start(3600, connect_timeout=self.io_loop.time() + 3600)
+        return conn, future
+
+    def test_immediate_success(self):
+        conn, future = self.start_connect(self.addrinfo)
+        self.assertEqual(list(self.connect_futures.keys()), [(AF1, "a")])
+        self.resolve_connect(AF1, "a", True)
+        self.assertEqual(future.result(), (AF1, "a", self.streams["a"]))
+
+    def test_immediate_failure(self):
+        # Fail with just one address.
+        conn, future = self.start_connect([(AF1, "a")])
+        self.assert_pending((AF1, "a"))
+        self.resolve_connect(AF1, "a", False)
+        self.assertRaises(IOError, future.result)
+
+    def test_one_family_second_try(self):
+        conn, future = self.start_connect([(AF1, "a"), (AF1, "b")])
+        self.assert_pending((AF1, "a"))
+        self.resolve_connect(AF1, "a", False)
+        self.assert_pending((AF1, "b"))
+        self.resolve_connect(AF1, "b", True)
+        self.assertEqual(future.result(), (AF1, "b", self.streams["b"]))
+
+    def test_one_family_second_try_failure(self):
+        conn, future = self.start_connect([(AF1, "a"), (AF1, "b")])
+        self.assert_pending((AF1, "a"))
+        self.resolve_connect(AF1, "a", False)
+        self.assert_pending((AF1, "b"))
+        self.resolve_connect(AF1, "b", False)
+        self.assertRaises(IOError, future.result)
+
+    def test_one_family_second_try_timeout(self):
+        conn, future = self.start_connect([(AF1, "a"), (AF1, "b")])
+        self.assert_pending((AF1, "a"))
+        # trigger the timeout while the first lookup is pending;
+        # nothing happens.
+        conn.on_timeout()
+        self.assert_pending((AF1, "a"))
+        self.resolve_connect(AF1, "a", False)
+        self.assert_pending((AF1, "b"))
+        self.resolve_connect(AF1, "b", True)
+        self.assertEqual(future.result(), (AF1, "b", self.streams["b"]))
+
+    def test_two_families_immediate_failure(self):
+        conn, future = self.start_connect(self.addrinfo)
+        self.assert_pending((AF1, "a"))
+        self.resolve_connect(AF1, "a", False)
+        self.assert_pending((AF1, "b"), (AF2, "c"))
+        self.resolve_connect(AF1, "b", False)
+        self.resolve_connect(AF2, "c", True)
+        self.assertEqual(future.result(), (AF2, "c", self.streams["c"]))
+
+    def test_two_families_timeout(self):
+        conn, future = self.start_connect(self.addrinfo)
+        self.assert_pending((AF1, "a"))
+        conn.on_timeout()
+        self.assert_pending((AF1, "a"), (AF2, "c"))
+        self.resolve_connect(AF2, "c", True)
+        self.assertEqual(future.result(), (AF2, "c", self.streams["c"]))
+        # resolving 'a' after the connection has completed doesn't start 'b'
+        self.resolve_connect(AF1, "a", False)
+        self.assert_pending()
+
+    def test_success_after_timeout(self):
+        conn, future = self.start_connect(self.addrinfo)
+        self.assert_pending((AF1, "a"))
+        conn.on_timeout()
+        self.assert_pending((AF1, "a"), (AF2, "c"))
+        self.resolve_connect(AF1, "a", True)
+        self.assertEqual(future.result(), (AF1, "a", self.streams["a"]))
+        # resolving 'c' after completion closes the connection.
+        self.resolve_connect(AF2, "c", True)
+        self.assertTrue(self.streams.pop("c").closed)
+
+    def test_all_fail(self):
+        conn, future = self.start_connect(self.addrinfo)
+        self.assert_pending((AF1, "a"))
+        conn.on_timeout()
+        self.assert_pending((AF1, "a"), (AF2, "c"))
+        self.resolve_connect(AF2, "c", False)
+        self.assert_pending((AF1, "a"), (AF2, "d"))
+        self.resolve_connect(AF2, "d", False)
+        # one queue is now empty
+        self.assert_pending((AF1, "a"))
+        self.resolve_connect(AF1, "a", False)
+        self.assert_pending((AF1, "b"))
+        self.assertFalse(future.done())
+        self.resolve_connect(AF1, "b", False)
+        self.assertRaises(IOError, future.result)
+
+    def test_one_family_timeout_after_connect_timeout(self):
+        conn, future = self.start_connect([(AF1, "a"), (AF1, "b")])
+        self.assert_pending((AF1, "a"))
+        conn.on_connect_timeout()
+        # the connector will close all streams on connect timeout, we
+        # should explicitly pop the connect_future.
+        self.connect_futures.pop((AF1, "a"))
+        self.assertTrue(self.streams.pop("a").closed)
+        conn.on_timeout()
+        # if the future is set with TimeoutError, we will not iterate next
+        # possible address.
+        self.assert_pending()
+        self.assertEqual(len(conn.streams), 1)
+        self.assert_connector_streams_closed(conn)
+        self.assertRaises(TimeoutError, future.result)
+
+    def test_one_family_success_before_connect_timeout(self):
+        conn, future = self.start_connect([(AF1, "a"), (AF1, "b")])
+        self.assert_pending((AF1, "a"))
+        self.resolve_connect(AF1, "a", True)
+        conn.on_connect_timeout()
+        self.assert_pending()
+        self.assertEqual(self.streams["a"].closed, False)
+        # success stream will be pop
+        self.assertEqual(len(conn.streams), 0)
+        # streams in connector should be closed after connect timeout
+        self.assert_connector_streams_closed(conn)
+        self.assertEqual(future.result(), (AF1, "a", self.streams["a"]))
+
+    def test_one_family_second_try_after_connect_timeout(self):
+        conn, future = self.start_connect([(AF1, "a"), (AF1, "b")])
+        self.assert_pending((AF1, "a"))
+        self.resolve_connect(AF1, "a", False)
+        self.assert_pending((AF1, "b"))
+        conn.on_connect_timeout()
+        self.connect_futures.pop((AF1, "b"))
+        self.assertTrue(self.streams.pop("b").closed)
+        self.assert_pending()
+        self.assertEqual(len(conn.streams), 2)
+        self.assert_connector_streams_closed(conn)
+        self.assertRaises(TimeoutError, future.result)
+
+    def test_one_family_second_try_failure_before_connect_timeout(self):
+        conn, future = self.start_connect([(AF1, "a"), (AF1, "b")])
+        self.assert_pending((AF1, "a"))
+        self.resolve_connect(AF1, "a", False)
+        self.assert_pending((AF1, "b"))
+        self.resolve_connect(AF1, "b", False)
+        conn.on_connect_timeout()
+        self.assert_pending()
+        self.assertEqual(len(conn.streams), 2)
+        self.assert_connector_streams_closed(conn)
+        self.assertRaises(IOError, future.result)
+
+    def test_two_family_timeout_before_connect_timeout(self):
+        conn, future = self.start_connect(self.addrinfo)
+        self.assert_pending((AF1, "a"))
+        conn.on_timeout()
+        self.assert_pending((AF1, "a"), (AF2, "c"))
+        conn.on_connect_timeout()
+        self.connect_futures.pop((AF1, "a"))
+        self.assertTrue(self.streams.pop("a").closed)
+        self.connect_futures.pop((AF2, "c"))
+        self.assertTrue(self.streams.pop("c").closed)
+        self.assert_pending()
+        self.assertEqual(len(conn.streams), 2)
+        self.assert_connector_streams_closed(conn)
+        self.assertRaises(TimeoutError, future.result)
+
+    def test_two_family_success_after_timeout(self):
+        conn, future = self.start_connect(self.addrinfo)
+        self.assert_pending((AF1, "a"))
+        conn.on_timeout()
+        self.assert_pending((AF1, "a"), (AF2, "c"))
+        self.resolve_connect(AF1, "a", True)
+        # if one of streams succeed, connector will close all other streams
+        self.connect_futures.pop((AF2, "c"))
+        self.assertTrue(self.streams.pop("c").closed)
+        self.assert_pending()
+        self.assertEqual(len(conn.streams), 1)
+        self.assert_connector_streams_closed(conn)
+        self.assertEqual(future.result(), (AF1, "a", self.streams["a"]))
+
+    def test_two_family_timeout_after_connect_timeout(self):
+        conn, future = self.start_connect(self.addrinfo)
+        self.assert_pending((AF1, "a"))
+        conn.on_connect_timeout()
+        self.connect_futures.pop((AF1, "a"))
+        self.assertTrue(self.streams.pop("a").closed)
+        self.assert_pending()
+        conn.on_timeout()
+        # if the future is set with TimeoutError, connector will not
+        # trigger secondary address.
+        self.assert_pending()
+        self.assertEqual(len(conn.streams), 1)
+        self.assert_connector_streams_closed(conn)
+        self.assertRaises(TimeoutError, future.result)

.venv/Lib/site-packages/tornado/test/tcpserver_test.py

@@ -0,0 +1,192 @@
+import socket
+import subprocess
+import sys
+import textwrap
+import unittest
+
+from tornado.escape import utf8, to_unicode
+from tornado import gen
+from tornado.iostream import IOStream
+from tornado.log import app_log
+from tornado.tcpserver import TCPServer
+from tornado.test.util import skipIfNonUnix
+from tornado.testing import AsyncTestCase, ExpectLog, bind_unused_port, gen_test
+
+
+class TCPServerTest(AsyncTestCase):
+    @gen_test
+    def test_handle_stream_coroutine_logging(self):
+        # handle_stream may be a coroutine and any exception in its
+        # Future will be logged.
+        class TestServer(TCPServer):
+            @gen.coroutine
+            def handle_stream(self, stream, address):
+                yield stream.read_bytes(len(b"hello"))
+                stream.close()
+                1 / 0
+
+        server = client = None
+        try:
+            sock, port = bind_unused_port()
+            server = TestServer()
+            server.add_socket(sock)
+            client = IOStream(socket.socket())
+            with ExpectLog(app_log, "Exception in callback"):
+                yield client.connect(("localhost", port))
+                yield client.write(b"hello")
+                yield client.read_until_close()
+                yield gen.moment
+        finally:
+            if server is not None:
+                server.stop()
+            if client is not None:
+                client.close()
+
+    @gen_test
+    def test_handle_stream_native_coroutine(self):
+        # handle_stream may be a native coroutine.
+
+        class TestServer(TCPServer):
+            async def handle_stream(self, stream, address):
+                stream.write(b"data")
+                stream.close()
+
+        sock, port = bind_unused_port()
+        server = TestServer()
+        server.add_socket(sock)
+        client = IOStream(socket.socket())
+        yield client.connect(("localhost", port))
+        result = yield client.read_until_close()
+        self.assertEqual(result, b"data")
+        server.stop()
+        client.close()
+
+    def test_stop_twice(self):
+        sock, port = bind_unused_port()
+        server = TCPServer()
+        server.add_socket(sock)
+        server.stop()
+        server.stop()
+
+    @gen_test
+    def test_stop_in_callback(self):
+        # Issue #2069: calling server.stop() in a loop callback should not
+        # raise EBADF when the loop handles other server connection
+        # requests in the same loop iteration
+
+        class TestServer(TCPServer):
+            @gen.coroutine
+            def handle_stream(self, stream, address):
+                server.stop()  # type: ignore
+                yield stream.read_until_close()
+
+        sock, port = bind_unused_port()
+        server = TestServer()
+        server.add_socket(sock)
+        server_addr = ("localhost", port)
+        N = 40
+        clients = [IOStream(socket.socket()) for i in range(N)]
+        connected_clients = []
+
+        @gen.coroutine
+        def connect(c):
+            try:
+                yield c.connect(server_addr)
+            except EnvironmentError:
+                pass
+            else:
+                connected_clients.append(c)
+
+        yield [connect(c) for c in clients]
+
+        self.assertGreater(len(connected_clients), 0, "all clients failed connecting")
+        try:
+            if len(connected_clients) == N:
+                # Ideally we'd make the test deterministic, but we're testing
+                # for a race condition in combination with the system's TCP stack...
+                self.skipTest(
+                    "at least one client should fail connecting "
+                    "for the test to be meaningful"
+                )
+        finally:
+            for c in connected_clients:
+                c.close()
+
+        # Here tearDown() would re-raise the EBADF encountered in the IO loop
+
+
+@skipIfNonUnix
+class TestMultiprocess(unittest.TestCase):
+    # These tests verify that the two multiprocess examples from the
+    # TCPServer docs work. Both tests start a server with three worker
+    # processes, each of which prints its task id to stdout (a single
+    # byte, so we don't have to worry about atomicity of the shared
+    # stdout stream) and then exits.
+    def run_subproc(self, code):
+        proc = subprocess.Popen(
+            sys.executable, stdin=subprocess.PIPE, stdout=subprocess.PIPE
+        )
+        proc.stdin.write(utf8(code))
+        proc.stdin.close()
+        proc.wait()
+        stdout = proc.stdout.read()
+        proc.stdout.close()
+        if proc.returncode != 0:
+            raise RuntimeError(
+                "Process returned %d. stdout=%r" % (proc.returncode, stdout)
+            )
+        return to_unicode(stdout)
+
+    def test_single(self):
+        # As a sanity check, run the single-process version through this test
+        # harness too.
+        code = textwrap.dedent(
+            """
+            from tornado.ioloop import IOLoop
+            from tornado.tcpserver import TCPServer
+
+            server = TCPServer()
+            server.listen(0, address='127.0.0.1')
+            IOLoop.current().run_sync(lambda: None)
+            print('012', end='')
+        """
+        )
+        out = self.run_subproc(code)
+        self.assertEqual("".join(sorted(out)), "012")
+
+    def test_simple(self):
+        code = textwrap.dedent(
+            """
+            from tornado.ioloop import IOLoop
+            from tornado.process import task_id
+            from tornado.tcpserver import TCPServer
+
+            server = TCPServer()
+            server.bind(0, address='127.0.0.1')
+            server.start(3)
+            IOLoop.current().run_sync(lambda: None)
+            print(task_id(), end='')
+        """
+        )
+        out = self.run_subproc(code)
+        self.assertEqual("".join(sorted(out)), "012")
+
+    def test_advanced(self):
+        code = textwrap.dedent(
+            """
+            from tornado.ioloop import IOLoop
+            from tornado.netutil import bind_sockets
+            from tornado.process import fork_processes, task_id
+            from tornado.ioloop import IOLoop
+            from tornado.tcpserver import TCPServer
+
+            sockets = bind_sockets(0, address='127.0.0.1')
+            fork_processes(3)
+            server = TCPServer()
+            server.add_sockets(sockets)
+            IOLoop.current().run_sync(lambda: None)
+            print(task_id(), end='')
+        """
+        )
+        out = self.run_subproc(code)
+        self.assertEqual("".join(sorted(out)), "012")

.venv/Lib/site-packages/tornado/test/template_test.py

@@ -0,0 +1,536 @@
+import os
+import traceback
+import unittest
+
+from tornado.escape import utf8, native_str, to_unicode
+from tornado.template import Template, DictLoader, ParseError, Loader
+from tornado.util import ObjectDict
+
+import typing  # noqa: F401
+
+
+class TemplateTest(unittest.TestCase):
+    def test_simple(self):
+        template = Template("Hello {{ name }}!")
+        self.assertEqual(template.generate(name="Ben"), b"Hello Ben!")
+
+    def test_bytes(self):
+        template = Template("Hello {{ name }}!")
+        self.assertEqual(template.generate(name=utf8("Ben")), b"Hello Ben!")
+
+    def test_expressions(self):
+        template = Template("2 + 2 = {{ 2 + 2 }}")
+        self.assertEqual(template.generate(), b"2 + 2 = 4")
+
+    def test_comment(self):
+        template = Template("Hello{# TODO i18n #} {{ name }}!")
+        self.assertEqual(template.generate(name=utf8("Ben")), b"Hello Ben!")
+
+    def test_include(self):
+        loader = DictLoader(
+            {
+                "index.html": '{% include "header.html" %}\nbody text',
+                "header.html": "header text",
+            }
+        )
+        self.assertEqual(
+            loader.load("index.html").generate(), b"header text\nbody text"
+        )
+
+    def test_extends(self):
+        loader = DictLoader(
+            {
+                "base.html": """\
+<title>{% block title %}default title{% end %}</title>
+<body>{% block body %}default body{% end %}</body>
+""",
+                "page.html": """\
+{% extends "base.html" %}
+{% block title %}page title{% end %}
+{% block body %}page body{% end %}
+""",
+            }
+        )
+        self.assertEqual(
+            loader.load("page.html").generate(),
+            b"<title>page title</title>\n<body>page body</body>\n",
+        )
+
+    def test_relative_load(self):
+        loader = DictLoader(
+            {
+                "a/1.html": "{% include '2.html' %}",
+                "a/2.html": "{% include '../b/3.html' %}",
+                "b/3.html": "ok",
+            }
+        )
+        self.assertEqual(loader.load("a/1.html").generate(), b"ok")
+
+    def test_escaping(self):
+        self.assertRaises(ParseError, lambda: Template("{{"))
+        self.assertRaises(ParseError, lambda: Template("{%"))
+        self.assertEqual(Template("{{!").generate(), b"{{")
+        self.assertEqual(Template("{%!").generate(), b"{%")
+        self.assertEqual(Template("{#!").generate(), b"{#")
+        self.assertEqual(
+            Template("{{ 'expr' }} {{!jquery expr}}").generate(),
+            b"expr {{jquery expr}}",
+        )
+
+    def test_unicode_template(self):
+        template = Template(utf8(u"\u00e9"))
+        self.assertEqual(template.generate(), utf8(u"\u00e9"))
+
+    def test_unicode_literal_expression(self):
+        # Unicode literals should be usable in templates.  Note that this
+        # test simulates unicode characters appearing directly in the
+        # template file (with utf8 encoding), i.e. \u escapes would not
+        # be used in the template file itself.
+        template = Template(utf8(u'{{ "\u00e9" }}'))
+        self.assertEqual(template.generate(), utf8(u"\u00e9"))
+
+    def test_custom_namespace(self):
+        loader = DictLoader(
+            {"test.html": "{{ inc(5) }}"}, namespace={"inc": lambda x: x + 1}
+        )
+        self.assertEqual(loader.load("test.html").generate(), b"6")
+
+    def test_apply(self):
+        def upper(s):
+            return s.upper()
+
+        template = Template(utf8("{% apply upper %}foo{% end %}"))
+        self.assertEqual(template.generate(upper=upper), b"FOO")
+
+    def test_unicode_apply(self):
+        def upper(s):
+            return to_unicode(s).upper()
+
+        template = Template(utf8(u"{% apply upper %}foo \u00e9{% end %}"))
+        self.assertEqual(template.generate(upper=upper), utf8(u"FOO \u00c9"))
+
+    def test_bytes_apply(self):
+        def upper(s):
+            return utf8(to_unicode(s).upper())
+
+        template = Template(utf8(u"{% apply upper %}foo \u00e9{% end %}"))
+        self.assertEqual(template.generate(upper=upper), utf8(u"FOO \u00c9"))
+
+    def test_if(self):
+        template = Template(utf8("{% if x > 4 %}yes{% else %}no{% end %}"))
+        self.assertEqual(template.generate(x=5), b"yes")
+        self.assertEqual(template.generate(x=3), b"no")
+
+    def test_if_empty_body(self):
+        template = Template(utf8("{% if True %}{% else %}{% end %}"))
+        self.assertEqual(template.generate(), b"")
+
+    def test_try(self):
+        template = Template(
+            utf8(
+                """{% try %}
+try{% set y = 1/x %}
+{% except %}-except
+{% else %}-else
+{% finally %}-finally
+{% end %}"""
+            )
+        )
+        self.assertEqual(template.generate(x=1), b"\ntry\n-else\n-finally\n")
+        self.assertEqual(template.generate(x=0), b"\ntry-except\n-finally\n")
+
+    def test_comment_directive(self):
+        template = Template(utf8("{% comment blah blah %}foo"))
+        self.assertEqual(template.generate(), b"foo")
+
+    def test_break_continue(self):
+        template = Template(
+            utf8(
+                """\
+{% for i in range(10) %}
+    {% if i == 2 %}
+        {% continue %}
+    {% end %}
+    {{ i }}
+    {% if i == 6 %}
+        {% break %}
+    {% end %}
+{% end %}"""
+            )
+        )
+        result = template.generate()
+        # remove extraneous whitespace
+        result = b"".join(result.split())
+        self.assertEqual(result, b"013456")
+
+    def test_break_outside_loop(self):
+        try:
+            Template(utf8("{% break %}"))
+            raise Exception("Did not get expected exception")
+        except ParseError:
+            pass
+
+    def test_break_in_apply(self):
+        # This test verifies current behavior, although of course it would
+        # be nice if apply didn't cause seemingly unrelated breakage
+        try:
+            Template(
+                utf8("{% for i in [] %}{% apply foo %}{% break %}{% end %}{% end %}")
+            )
+            raise Exception("Did not get expected exception")
+        except ParseError:
+            pass
+
+    @unittest.skip("no testable future imports")
+    def test_no_inherit_future(self):
+        # TODO(bdarnell): make a test like this for one of the future
+        # imports available in python 3. Unfortunately they're harder
+        # to use in a template than division was.
+
+        # This file has from __future__ import division...
+        self.assertEqual(1 / 2, 0.5)
+        # ...but the template doesn't
+        template = Template("{{ 1 / 2 }}")
+        self.assertEqual(template.generate(), "0")
+
+    def test_non_ascii_name(self):
+        loader = DictLoader({u"t\u00e9st.html": "hello"})
+        self.assertEqual(loader.load(u"t\u00e9st.html").generate(), b"hello")
+
+
+class StackTraceTest(unittest.TestCase):
+    def test_error_line_number_expression(self):
+        loader = DictLoader(
+            {
+                "test.html": """one
+two{{1/0}}
+three
+        """
+            }
+        )
+        try:
+            loader.load("test.html").generate()
+            self.fail("did not get expected exception")
+        except ZeroDivisionError:
+            self.assertTrue("# test.html:2" in traceback.format_exc())
+
+    def test_error_line_number_directive(self):
+        loader = DictLoader(
+            {
+                "test.html": """one
+two{%if 1/0%}
+three{%end%}
+        """
+            }
+        )
+        try:
+            loader.load("test.html").generate()
+            self.fail("did not get expected exception")
+        except ZeroDivisionError:
+            self.assertTrue("# test.html:2" in traceback.format_exc())
+
+    def test_error_line_number_module(self):
+        loader = None  # type: typing.Optional[DictLoader]
+
+        def load_generate(path, **kwargs):
+            assert loader is not None
+            return loader.load(path).generate(**kwargs)
+
+        loader = DictLoader(
+            {"base.html": "{% module Template('sub.html') %}", "sub.html": "{{1/0}}"},
+            namespace={"_tt_modules": ObjectDict(Template=load_generate)},
+        )
+        try:
+            loader.load("base.html").generate()
+            self.fail("did not get expected exception")
+        except ZeroDivisionError:
+            exc_stack = traceback.format_exc()
+            self.assertTrue("# base.html:1" in exc_stack)
+            self.assertTrue("# sub.html:1" in exc_stack)
+
+    def test_error_line_number_include(self):
+        loader = DictLoader(
+            {"base.html": "{% include 'sub.html' %}", "sub.html": "{{1/0}}"}
+        )
+        try:
+            loader.load("base.html").generate()
+            self.fail("did not get expected exception")
+        except ZeroDivisionError:
+            self.assertTrue("# sub.html:1 (via base.html:1)" in traceback.format_exc())
+
+    def test_error_line_number_extends_base_error(self):
+        loader = DictLoader(
+            {"base.html": "{{1/0}}", "sub.html": "{% extends 'base.html' %}"}
+        )
+        try:
+            loader.load("sub.html").generate()
+            self.fail("did not get expected exception")
+        except ZeroDivisionError:
+            exc_stack = traceback.format_exc()
+        self.assertTrue("# base.html:1" in exc_stack)
+
+    def test_error_line_number_extends_sub_error(self):
+        loader = DictLoader(
+            {
+                "base.html": "{% block 'block' %}{% end %}",
+                "sub.html": """
+{% extends 'base.html' %}
+{% block 'block' %}
+{{1/0}}
+{% end %}
+            """,
+            }
+        )
+        try:
+            loader.load("sub.html").generate()
+            self.fail("did not get expected exception")
+        except ZeroDivisionError:
+            self.assertTrue("# sub.html:4 (via base.html:1)" in traceback.format_exc())
+
+    def test_multi_includes(self):
+        loader = DictLoader(
+            {
+                "a.html": "{% include 'b.html' %}",
+                "b.html": "{% include 'c.html' %}",
+                "c.html": "{{1/0}}",
+            }
+        )
+        try:
+            loader.load("a.html").generate()
+            self.fail("did not get expected exception")
+        except ZeroDivisionError:
+            self.assertTrue(
+                "# c.html:1 (via b.html:1, a.html:1)" in traceback.format_exc()
+            )
+
+
+class ParseErrorDetailTest(unittest.TestCase):
+    def test_details(self):
+        loader = DictLoader({"foo.html": "\n\n{{"})
+        with self.assertRaises(ParseError) as cm:
+            loader.load("foo.html")
+        self.assertEqual("Missing end expression }} at foo.html:3", str(cm.exception))
+        self.assertEqual("foo.html", cm.exception.filename)
+        self.assertEqual(3, cm.exception.lineno)
+
+    def test_custom_parse_error(self):
+        # Make sure that ParseErrors remain compatible with their
+        # pre-4.3 signature.
+        self.assertEqual("asdf at None:0", str(ParseError("asdf")))
+
+
+class AutoEscapeTest(unittest.TestCase):
+    def setUp(self):
+        self.templates = {
+            "escaped.html": "{% autoescape xhtml_escape %}{{ name }}",
+            "unescaped.html": "{% autoescape None %}{{ name }}",
+            "default.html": "{{ name }}",
+            "include.html": """\
+escaped: {% include 'escaped.html' %}
+unescaped: {% include 'unescaped.html' %}
+default: {% include 'default.html' %}
+""",
+            "escaped_block.html": """\
+{% autoescape xhtml_escape %}\
+{% block name %}base: {{ name }}{% end %}""",
+            "unescaped_block.html": """\
+{% autoescape None %}\
+{% block name %}base: {{ name }}{% end %}""",
+            # Extend a base template with different autoescape policy,
+            # with and without overriding the base's blocks
+            "escaped_extends_unescaped.html": """\
+{% autoescape xhtml_escape %}\
+{% extends "unescaped_block.html" %}""",
+            "escaped_overrides_unescaped.html": """\
+{% autoescape xhtml_escape %}\
+{% extends "unescaped_block.html" %}\
+{% block name %}extended: {{ name }}{% end %}""",
+            "unescaped_extends_escaped.html": """\
+{% autoescape None %}\
+{% extends "escaped_block.html" %}""",
+            "unescaped_overrides_escaped.html": """\
+{% autoescape None %}\
+{% extends "escaped_block.html" %}\
+{% block name %}extended: {{ name }}{% end %}""",
+            "raw_expression.html": """\
+{% autoescape xhtml_escape %}\
+expr: {{ name }}
+raw: {% raw name %}""",
+        }
+
+    def test_default_off(self):
+        loader = DictLoader(self.templates, autoescape=None)
+        name = "Bobby <table>s"
+        self.assertEqual(
+            loader.load("escaped.html").generate(name=name), b"Bobby &lt;table&gt;s"
+        )
+        self.assertEqual(
+            loader.load("unescaped.html").generate(name=name), b"Bobby <table>s"
+        )
+        self.assertEqual(
+            loader.load("default.html").generate(name=name), b"Bobby <table>s"
+        )
+
+        self.assertEqual(
+            loader.load("include.html").generate(name=name),
+            b"escaped: Bobby &lt;table&gt;s\n"
+            b"unescaped: Bobby <table>s\n"
+            b"default: Bobby <table>s\n",
+        )
+
+    def test_default_on(self):
+        loader = DictLoader(self.templates, autoescape="xhtml_escape")
+        name = "Bobby <table>s"
+        self.assertEqual(
+            loader.load("escaped.html").generate(name=name), b"Bobby &lt;table&gt;s"
+        )
+        self.assertEqual(
+            loader.load("unescaped.html").generate(name=name), b"Bobby <table>s"
+        )
+        self.assertEqual(
+            loader.load("default.html").generate(name=name), b"Bobby &lt;table&gt;s"
+        )
+
+        self.assertEqual(
+            loader.load("include.html").generate(name=name),
+            b"escaped: Bobby &lt;table&gt;s\n"
+            b"unescaped: Bobby <table>s\n"
+            b"default: Bobby &lt;table&gt;s\n",
+        )
+
+    def test_unextended_block(self):
+        loader = DictLoader(self.templates)
+        name = "<script>"
+        self.assertEqual(
+            loader.load("escaped_block.html").generate(name=name),
+            b"base: &lt;script&gt;",
+        )
+        self.assertEqual(
+            loader.load("unescaped_block.html").generate(name=name), b"base: <script>"
+        )
+
+    def test_extended_block(self):
+        loader = DictLoader(self.templates)
+
+        def render(name):
+            return loader.load(name).generate(name="<script>")
+
+        self.assertEqual(render("escaped_extends_unescaped.html"), b"base: <script>")
+        self.assertEqual(
+            render("escaped_overrides_unescaped.html"), b"extended: &lt;script&gt;"
+        )
+
+        self.assertEqual(
+            render("unescaped_extends_escaped.html"), b"base: &lt;script&gt;"
+        )
+        self.assertEqual(
+            render("unescaped_overrides_escaped.html"), b"extended: <script>"
+        )
+
+    def test_raw_expression(self):
+        loader = DictLoader(self.templates)
+
+        def render(name):
+            return loader.load(name).generate(name='<>&"')
+
+        self.assertEqual(
+            render("raw_expression.html"), b"expr: &lt;&gt;&amp;&quot;\n" b'raw: <>&"'
+        )
+
+    def test_custom_escape(self):
+        loader = DictLoader({"foo.py": "{% autoescape py_escape %}s = {{ name }}\n"})
+
+        def py_escape(s):
+            self.assertEqual(type(s), bytes)
+            return repr(native_str(s))
+
+        def render(template, name):
+            return loader.load(template).generate(py_escape=py_escape, name=name)
+
+        self.assertEqual(render("foo.py", "<html>"), b"s = '<html>'\n")
+        self.assertEqual(render("foo.py", "';sys.exit()"), b"""s = "';sys.exit()"\n""")
+        self.assertEqual(
+            render("foo.py", ["not a string"]), b"""s = "['not a string']"\n"""
+        )
+
+    def test_manual_minimize_whitespace(self):
+        # Whitespace including newlines is allowed within template tags
+        # and directives, and this is one way to avoid long lines while
+        # keeping extra whitespace out of the rendered output.
+        loader = DictLoader(
+            {
+                "foo.txt": """\
+{% for i in items
+  %}{% if i > 0 %}, {% end %}{#
+  #}{{i
+  }}{% end
+%}"""
+            }
+        )
+        self.assertEqual(
+            loader.load("foo.txt").generate(items=range(5)), b"0, 1, 2, 3, 4"
+        )
+
+    def test_whitespace_by_filename(self):
+        # Default whitespace handling depends on the template filename.
+        loader = DictLoader(
+            {
+                "foo.html": "   \n\t\n asdf\t   ",
+                "bar.js": " \n\n\n\t qwer     ",
+                "baz.txt": "\t    zxcv\n\n",
+                "include.html": "  {% include baz.txt %} \n ",
+                "include.txt": "\t\t{% include foo.html %}    ",
+            }
+        )
+
+        # HTML and JS files have whitespace compressed by default.
+        self.assertEqual(loader.load("foo.html").generate(), b"\nasdf ")
+        self.assertEqual(loader.load("bar.js").generate(), b"\nqwer ")
+        # TXT files do not.
+        self.assertEqual(loader.load("baz.txt").generate(), b"\t    zxcv\n\n")
+
+        # Each file maintains its own status even when included in
+        # a file of the other type.
+        self.assertEqual(loader.load("include.html").generate(), b" \t    zxcv\n\n\n")
+        self.assertEqual(loader.load("include.txt").generate(), b"\t\t\nasdf     ")
+
+    def test_whitespace_by_loader(self):
+        templates = {"foo.html": "\t\tfoo\n\n", "bar.txt": "\t\tbar\n\n"}
+        loader = DictLoader(templates, whitespace="all")
+        self.assertEqual(loader.load("foo.html").generate(), b"\t\tfoo\n\n")
+        self.assertEqual(loader.load("bar.txt").generate(), b"\t\tbar\n\n")
+
+        loader = DictLoader(templates, whitespace="single")
+        self.assertEqual(loader.load("foo.html").generate(), b" foo\n")
+        self.assertEqual(loader.load("bar.txt").generate(), b" bar\n")
+
+        loader = DictLoader(templates, whitespace="oneline")
+        self.assertEqual(loader.load("foo.html").generate(), b" foo ")
+        self.assertEqual(loader.load("bar.txt").generate(), b" bar ")
+
+    def test_whitespace_directive(self):
+        loader = DictLoader(
+            {
+                "foo.html": """\
+{% whitespace oneline %}
+    {% for i in range(3) %}
+        {{ i }}
+    {% end %}
+{% whitespace all %}
+    pre\tformatted
+"""
+            }
+        )
+        self.assertEqual(
+            loader.load("foo.html").generate(), b"  0  1  2  \n    pre\tformatted\n"
+        )
+
+
+class TemplateLoaderTest(unittest.TestCase):
+    def setUp(self):
+        self.loader = Loader(os.path.join(os.path.dirname(__file__), "templates"))
+
+    def test_utf8_in_file(self):
+        tmpl = self.loader.load("utf8.html")
+        result = tmpl.generate()
+        self.assertEqual(to_unicode(result).strip(), u"H\u00e9llo")

.venv/Lib/site-packages/tornado/test/templates/utf8.html

@@ -0,0 +1 @@
+Héllo

.venv/Lib/site-packages/tornado/test/test.crt

@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----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=
+-----END CERTIFICATE-----

.venv/Lib/site-packages/tornado/test/test.key

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----

.venv/Lib/site-packages/tornado/test/testing_test.py

@@ -0,0 +1,353 @@
+from tornado import gen, ioloop
+from tornado.httpserver import HTTPServer
+from tornado.locks import Event
+from tornado.testing import AsyncHTTPTestCase, AsyncTestCase, bind_unused_port, gen_test
+from tornado.web import Application
+import asyncio
+import contextlib
+import gc
+import os
+import platform
+import traceback
+import unittest
+import warnings
+
+
+@contextlib.contextmanager
+def set_environ(name, value):
+    old_value = os.environ.get(name)
+    os.environ[name] = value
+
+    try:
+        yield
+    finally:
+        if old_value is None:
+            del os.environ[name]
+        else:
+            os.environ[name] = old_value
+
+
+class AsyncTestCaseTest(AsyncTestCase):
+    def test_wait_timeout(self):
+        time = self.io_loop.time
+
+        # Accept default 5-second timeout, no error
+        self.io_loop.add_timeout(time() + 0.01, self.stop)
+        self.wait()
+
+        # Timeout passed to wait()
+        self.io_loop.add_timeout(time() + 1, self.stop)
+        with self.assertRaises(self.failureException):
+            self.wait(timeout=0.01)
+
+        # Timeout set with environment variable
+        self.io_loop.add_timeout(time() + 1, self.stop)
+        with set_environ("ASYNC_TEST_TIMEOUT", "0.01"):
+            with self.assertRaises(self.failureException):
+                self.wait()
+
+    def test_subsequent_wait_calls(self):
+        """
+        This test makes sure that a second call to wait()
+        clears the first timeout.
+        """
+        # The first wait ends with time left on the clock
+        self.io_loop.add_timeout(self.io_loop.time() + 0.00, self.stop)
+        self.wait(timeout=0.1)
+        # The second wait has enough time for itself but would fail if the
+        # first wait's deadline were still in effect.
+        self.io_loop.add_timeout(self.io_loop.time() + 0.2, self.stop)
+        self.wait(timeout=0.4)
+
+
+class LeakTest(AsyncTestCase):
+    def tearDown(self):
+        super().tearDown()
+        # Trigger a gc to make warnings more deterministic.
+        gc.collect()
+
+    def test_leaked_coroutine(self):
+        # This test verifies that "leaked" coroutines are shut down
+        # without triggering warnings like "task was destroyed but it
+        # is pending". If this test were to fail, it would fail
+        # because runtests.py detected unexpected output to stderr.
+        event = Event()
+
+        async def callback():
+            try:
+                await event.wait()
+            except asyncio.CancelledError:
+                pass
+
+        self.io_loop.add_callback(callback)
+        self.io_loop.add_callback(self.stop)
+        self.wait()
+
+
+class AsyncHTTPTestCaseTest(AsyncHTTPTestCase):
+    def setUp(self):
+        super().setUp()
+        # Bind a second port.
+        sock, port = bind_unused_port()
+        app = Application()
+        server = HTTPServer(app, **self.get_httpserver_options())
+        server.add_socket(sock)
+        self.second_port = port
+        self.second_server = server
+
+    def get_app(self):
+        return Application()
+
+    def test_fetch_segment(self):
+        path = "/path"
+        response = self.fetch(path)
+        self.assertEqual(response.request.url, self.get_url(path))
+
+    def test_fetch_full_http_url(self):
+        # Ensure that self.fetch() recognizes absolute urls and does
+        # not transform them into references to our main test server.
+        path = "http://localhost:%d/path" % self.second_port
+
+        response = self.fetch(path)
+        self.assertEqual(response.request.url, path)
+
+    def tearDown(self):
+        self.second_server.stop()
+        super().tearDown()
+
+
+class AsyncTestCaseWrapperTest(unittest.TestCase):
+    def test_undecorated_generator(self):
+        class Test(AsyncTestCase):
+            def test_gen(self):
+                yield
+
+        test = Test("test_gen")
+        result = unittest.TestResult()
+        test.run(result)
+        self.assertEqual(len(result.errors), 1)
+        self.assertIn("should be decorated", result.errors[0][1])
+
+    @unittest.skipIf(
+        platform.python_implementation() == "PyPy",
+        "pypy destructor warnings cannot be silenced",
+    )
+    def test_undecorated_coroutine(self):
+        class Test(AsyncTestCase):
+            async def test_coro(self):
+                pass
+
+        test = Test("test_coro")
+        result = unittest.TestResult()
+
+        # Silence "RuntimeWarning: coroutine 'test_coro' was never awaited".
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore")
+            test.run(result)
+
+        self.assertEqual(len(result.errors), 1)
+        self.assertIn("should be decorated", result.errors[0][1])
+
+    def test_undecorated_generator_with_skip(self):
+        class Test(AsyncTestCase):
+            @unittest.skip("don't run this")
+            def test_gen(self):
+                yield
+
+        test = Test("test_gen")
+        result = unittest.TestResult()
+        test.run(result)
+        self.assertEqual(len(result.errors), 0)
+        self.assertEqual(len(result.skipped), 1)
+
+    def test_other_return(self):
+        class Test(AsyncTestCase):
+            def test_other_return(self):
+                return 42
+
+        test = Test("test_other_return")
+        result = unittest.TestResult()
+        test.run(result)
+        self.assertEqual(len(result.errors), 1)
+        self.assertIn("Return value from test method ignored", result.errors[0][1])
+
+
+class SetUpTearDownTest(unittest.TestCase):
+    def test_set_up_tear_down(self):
+        """
+        This test makes sure that AsyncTestCase calls super methods for
+        setUp and tearDown.
+
+        InheritBoth is a subclass of both AsyncTestCase and
+        SetUpTearDown, with the ordering so that the super of
+        AsyncTestCase will be SetUpTearDown.
+        """
+        events = []
+        result = unittest.TestResult()
+
+        class SetUpTearDown(unittest.TestCase):
+            def setUp(self):
+                events.append("setUp")
+
+            def tearDown(self):
+                events.append("tearDown")
+
+        class InheritBoth(AsyncTestCase, SetUpTearDown):
+            def test(self):
+                events.append("test")
+
+        InheritBoth("test").run(result)
+        expected = ["setUp", "test", "tearDown"]
+        self.assertEqual(expected, events)
+
+
+class AsyncHTTPTestCaseSetUpTearDownTest(unittest.TestCase):
+    def test_tear_down_releases_app_and_http_server(self):
+        result = unittest.TestResult()
+
+        class SetUpTearDown(AsyncHTTPTestCase):
+            def get_app(self):
+                return Application()
+
+            def test(self):
+                self.assertTrue(hasattr(self, "_app"))
+                self.assertTrue(hasattr(self, "http_server"))
+
+        test = SetUpTearDown("test")
+        test.run(result)
+        self.assertFalse(hasattr(test, "_app"))
+        self.assertFalse(hasattr(test, "http_server"))
+
+
+class GenTest(AsyncTestCase):
+    def setUp(self):
+        super().setUp()
+        self.finished = False
+
+    def tearDown(self):
+        self.assertTrue(self.finished)
+        super().tearDown()
+
+    @gen_test
+    def test_sync(self):
+        self.finished = True
+
+    @gen_test
+    def test_async(self):
+        yield gen.moment
+        self.finished = True
+
+    def test_timeout(self):
+        # Set a short timeout and exceed it.
+        @gen_test(timeout=0.1)
+        def test(self):
+            yield gen.sleep(1)
+
+        # This can't use assertRaises because we need to inspect the
+        # exc_info triple (and not just the exception object)
+        try:
+            test(self)
+            self.fail("did not get expected exception")
+        except ioloop.TimeoutError:
+            # The stack trace should blame the add_timeout line, not just
+            # unrelated IOLoop/testing internals.
+            self.assertIn("gen.sleep(1)", traceback.format_exc())
+
+        self.finished = True
+
+    def test_no_timeout(self):
+        # A test that does not exceed its timeout should succeed.
+        @gen_test(timeout=1)
+        def test(self):
+            yield gen.sleep(0.1)
+
+        test(self)
+        self.finished = True
+
+    def test_timeout_environment_variable(self):
+        @gen_test(timeout=0.5)
+        def test_long_timeout(self):
+            yield gen.sleep(0.25)
+
+        # Uses provided timeout of 0.5 seconds, doesn't time out.
+        with set_environ("ASYNC_TEST_TIMEOUT", "0.1"):
+            test_long_timeout(self)
+
+        self.finished = True
+
+    def test_no_timeout_environment_variable(self):
+        @gen_test(timeout=0.01)
+        def test_short_timeout(self):
+            yield gen.sleep(1)
+
+        # Uses environment-variable timeout of 0.1, times out.
+        with set_environ("ASYNC_TEST_TIMEOUT", "0.1"):
+            with self.assertRaises(ioloop.TimeoutError):
+                test_short_timeout(self)
+
+        self.finished = True
+
+    def test_with_method_args(self):
+        @gen_test
+        def test_with_args(self, *args):
+            self.assertEqual(args, ("test",))
+            yield gen.moment
+
+        test_with_args(self, "test")
+        self.finished = True
+
+    def test_with_method_kwargs(self):
+        @gen_test
+        def test_with_kwargs(self, **kwargs):
+            self.assertDictEqual(kwargs, {"test": "test"})
+            yield gen.moment
+
+        test_with_kwargs(self, test="test")
+        self.finished = True
+
+    def test_native_coroutine(self):
+        @gen_test
+        async def test(self):
+            self.finished = True
+
+        test(self)
+
+    def test_native_coroutine_timeout(self):
+        # Set a short timeout and exceed it.
+        @gen_test(timeout=0.1)
+        async def test(self):
+            await gen.sleep(1)
+
+        try:
+            test(self)
+            self.fail("did not get expected exception")
+        except ioloop.TimeoutError:
+            self.finished = True
+
+
+class GetNewIOLoopTest(AsyncTestCase):
+    def get_new_ioloop(self):
+        # Use the current loop instead of creating a new one here.
+        return ioloop.IOLoop.current()
+
+    def setUp(self):
+        # This simulates the effect of an asyncio test harness like
+        # pytest-asyncio.
+        self.orig_loop = asyncio.get_event_loop()
+        self.new_loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(self.new_loop)
+        super().setUp()
+
+    def tearDown(self):
+        super().tearDown()
+        # AsyncTestCase must not affect the existing asyncio loop.
+        self.assertFalse(asyncio.get_event_loop().is_closed())
+        asyncio.set_event_loop(self.orig_loop)
+        self.new_loop.close()
+
+    def test_loop(self):
+        self.assertIs(self.io_loop.asyncio_loop, self.new_loop)  # type: ignore
+
+
+if __name__ == "__main__":
+    unittest.main()

.venv/Lib/site-packages/tornado/test/twisted_test.py

@@ -0,0 +1,247 @@
+# Author: Ovidiu Predescu
+# Date: July 2011
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import asyncio
+import logging
+import signal
+import unittest
+import warnings
+
+from tornado.escape import utf8
+from tornado import gen
+from tornado.httpclient import AsyncHTTPClient
+from tornado.httpserver import HTTPServer
+from tornado.ioloop import IOLoop
+from tornado.testing import bind_unused_port, AsyncTestCase, gen_test
+from tornado.web import RequestHandler, Application
+
+try:
+    from twisted.internet.defer import (  # type: ignore
+        Deferred,
+        inlineCallbacks,
+        returnValue,
+    )
+    from twisted.internet.protocol import Protocol  # type: ignore
+    from twisted.internet.asyncioreactor import AsyncioSelectorReactor  # type: ignore
+    from twisted.web.client import Agent, readBody  # type: ignore
+    from twisted.web.resource import Resource  # type: ignore
+    from twisted.web.server import Site  # type: ignore
+
+    have_twisted = True
+except ImportError:
+    have_twisted = False
+else:
+    # Not used directly but needed for `yield deferred` to work.
+    import tornado.platform.twisted  # noqa: F401
+
+skipIfNoTwisted = unittest.skipUnless(have_twisted, "twisted module not present")
+
+
+def save_signal_handlers():
+    saved = {}
+    signals = [signal.SIGINT, signal.SIGTERM]
+    if hasattr(signal, "SIGCHLD"):
+        signals.append(signal.SIGCHLD)
+    for sig in signals:
+        saved[sig] = signal.getsignal(sig)
+    if "twisted" in repr(saved):
+        # This indicates we're not cleaning up after ourselves properly.
+        raise Exception("twisted signal handlers already installed")
+    return saved
+
+
+def restore_signal_handlers(saved):
+    for sig, handler in saved.items():
+        signal.signal(sig, handler)
+
+
+# Test various combinations of twisted and tornado http servers,
+# http clients, and event loop interfaces.
+
+
+@skipIfNoTwisted
+class CompatibilityTests(unittest.TestCase):
+    def setUp(self):
+        self.saved_signals = save_signal_handlers()
+        self.saved_policy = asyncio.get_event_loop_policy()
+        if hasattr(asyncio, "WindowsSelectorEventLoopPolicy"):
+            # Twisted requires a selector event loop, even if Tornado is
+            # doing its own tricks in AsyncIOLoop to support proactors.
+            # Setting an AddThreadSelectorEventLoop exposes various edge
+            # cases so just use a regular selector.
+            asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())  # type: ignore
+        self.io_loop = IOLoop()
+        self.io_loop.make_current()
+        self.reactor = AsyncioSelectorReactor()
+
+    def tearDown(self):
+        self.reactor.disconnectAll()
+        self.io_loop.clear_current()
+        self.io_loop.close(all_fds=True)
+        asyncio.set_event_loop_policy(self.saved_policy)
+        restore_signal_handlers(self.saved_signals)
+
+    def start_twisted_server(self):
+        class HelloResource(Resource):
+            isLeaf = True
+
+            def render_GET(self, request):
+                return b"Hello from twisted!"
+
+        site = Site(HelloResource())
+        port = self.reactor.listenTCP(0, site, interface="127.0.0.1")
+        self.twisted_port = port.getHost().port
+
+    def start_tornado_server(self):
+        class HelloHandler(RequestHandler):
+            def get(self):
+                self.write("Hello from tornado!")
+
+        app = Application([("/", HelloHandler)], log_function=lambda x: None)
+        server = HTTPServer(app)
+        sock, self.tornado_port = bind_unused_port()
+        server.add_sockets([sock])
+
+    def run_reactor(self):
+        # In theory, we can run the event loop through Tornado,
+        # Twisted, or asyncio interfaces. However, since we're trying
+        # to avoid installing anything as the global event loop, only
+        # the twisted interface gets everything wired up correectly
+        # without extra hacks. This method is a part of a
+        # no-longer-used generalization that allowed us to test
+        # different combinations.
+        self.stop_loop = self.reactor.stop
+        self.stop = self.reactor.stop
+        self.reactor.run()
+
+    def tornado_fetch(self, url, runner):
+        client = AsyncHTTPClient()
+        fut = asyncio.ensure_future(client.fetch(url))
+        fut.add_done_callback(lambda f: self.stop_loop())
+        runner()
+        return fut.result()
+
+    def twisted_fetch(self, url, runner):
+        # http://twistedmatrix.com/documents/current/web/howto/client.html
+        chunks = []
+        client = Agent(self.reactor)
+        d = client.request(b"GET", utf8(url))
+
+        class Accumulator(Protocol):
+            def __init__(self, finished):
+                self.finished = finished
+
+            def dataReceived(self, data):
+                chunks.append(data)
+
+            def connectionLost(self, reason):
+                self.finished.callback(None)
+
+        def callback(response):
+            finished = Deferred()
+            response.deliverBody(Accumulator(finished))
+            return finished
+
+        d.addCallback(callback)
+
+        def shutdown(failure):
+            if hasattr(self, "stop_loop"):
+                self.stop_loop()
+            elif failure is not None:
+                # loop hasn't been initialized yet; try our best to
+                # get an error message out. (the runner() interaction
+                # should probably be refactored).
+                try:
+                    failure.raiseException()
+                except:
+                    logging.error("exception before starting loop", exc_info=True)
+
+        d.addBoth(shutdown)
+        runner()
+        self.assertTrue(chunks)
+        return b"".join(chunks)
+
+    def twisted_coroutine_fetch(self, url, runner):
+        body = [None]
+
+        @gen.coroutine
+        def f():
+            # This is simpler than the non-coroutine version, but it cheats
+            # by reading the body in one blob instead of streaming it with
+            # a Protocol.
+            client = Agent(self.reactor)
+            response = yield client.request(b"GET", utf8(url))
+            with warnings.catch_warnings():
+                # readBody has a buggy DeprecationWarning in Twisted 15.0:
+                # https://twistedmatrix.com/trac/changeset/43379
+                warnings.simplefilter("ignore", category=DeprecationWarning)
+                body[0] = yield readBody(response)
+            self.stop_loop()
+
+        self.io_loop.add_callback(f)
+        runner()
+        return body[0]
+
+    def testTwistedServerTornadoClientReactor(self):
+        self.start_twisted_server()
+        response = self.tornado_fetch(
+            "http://127.0.0.1:%d" % self.twisted_port, self.run_reactor
+        )
+        self.assertEqual(response.body, b"Hello from twisted!")
+
+    def testTornadoServerTwistedClientReactor(self):
+        self.start_tornado_server()
+        response = self.twisted_fetch(
+            "http://127.0.0.1:%d" % self.tornado_port, self.run_reactor
+        )
+        self.assertEqual(response, b"Hello from tornado!")
+
+    def testTornadoServerTwistedCoroutineClientReactor(self):
+        self.start_tornado_server()
+        response = self.twisted_coroutine_fetch(
+            "http://127.0.0.1:%d" % self.tornado_port, self.run_reactor
+        )
+        self.assertEqual(response, b"Hello from tornado!")
+
+
+@skipIfNoTwisted
+class ConvertDeferredTest(AsyncTestCase):
+    @gen_test
+    def test_success(self):
+        @inlineCallbacks
+        def fn():
+            if False:
+                # inlineCallbacks doesn't work with regular functions;
+                # must have a yield even if it's unreachable.
+                yield
+            returnValue(42)
+
+        res = yield fn()
+        self.assertEqual(res, 42)
+
+    @gen_test
+    def test_failure(self):
+        @inlineCallbacks
+        def fn():
+            if False:
+                yield
+            1 / 0
+
+        with self.assertRaises(ZeroDivisionError):
+            yield fn()
+
+
+if __name__ == "__main__":
+    unittest.main()

.venv/Lib/site-packages/tornado/test/util.py

@@ -0,0 +1,114 @@
+import contextlib
+import os
+import platform
+import socket
+import sys
+import textwrap
+import typing  # noqa: F401
+import unittest
+import warnings
+
+from tornado.testing import bind_unused_port
+
+skipIfNonUnix = unittest.skipIf(
+    os.name != "posix" or sys.platform == "cygwin", "non-unix platform"
+)
+
+# travis-ci.org runs our tests in an overworked virtual machine, which makes
+# timing-related tests unreliable.
+skipOnTravis = unittest.skipIf(
+    "TRAVIS" in os.environ, "timing tests unreliable on travis"
+)
+
+# Set the environment variable NO_NETWORK=1 to disable any tests that
+# depend on an external network.
+skipIfNoNetwork = unittest.skipIf("NO_NETWORK" in os.environ, "network access disabled")
+
+skipNotCPython = unittest.skipIf(
+    platform.python_implementation() != "CPython", "Not CPython implementation"
+)
+
+# Used for tests affected by
+# https://bitbucket.org/pypy/pypy/issues/2616/incomplete-error-handling-in
+# TODO: remove this after pypy3 5.8 is obsolete.
+skipPypy3V58 = unittest.skipIf(
+    platform.python_implementation() == "PyPy"
+    and sys.version_info > (3,)
+    and sys.pypy_version_info < (5, 9),  # type: ignore
+    "pypy3 5.8 has buggy ssl module",
+)
+
+
+def _detect_ipv6():
+    if not socket.has_ipv6:
+        # socket.has_ipv6 check reports whether ipv6 was present at compile
+        # time. It's usually true even when ipv6 doesn't work for other reasons.
+        return False
+    sock = None
+    try:
+        sock = socket.socket(socket.AF_INET6)
+        sock.bind(("::1", 0))
+    except socket.error:
+        return False
+    finally:
+        if sock is not None:
+            sock.close()
+    return True
+
+
+skipIfNoIPv6 = unittest.skipIf(not _detect_ipv6(), "ipv6 support not present")
+
+
+def refusing_port():
+    """Returns a local port number that will refuse all connections.
+
+    Return value is (cleanup_func, port); the cleanup function
+    must be called to free the port to be reused.
+    """
+    # On travis-ci, port numbers are reassigned frequently. To avoid
+    # collisions with other tests, we use an open client-side socket's
+    # ephemeral port number to ensure that nothing can listen on that
+    # port.
+    server_socket, port = bind_unused_port()
+    server_socket.setblocking(True)
+    client_socket = socket.socket()
+    client_socket.connect(("127.0.0.1", port))
+    conn, client_addr = server_socket.accept()
+    conn.close()
+    server_socket.close()
+    return (client_socket.close, client_addr[1])
+
+
+def exec_test(caller_globals, caller_locals, s):
+    """Execute ``s`` in a given context and return the result namespace.
+
+    Used to define functions for tests in particular python
+    versions that would be syntax errors in older versions.
+    """
+    # Flatten the real global and local namespace into our fake
+    # globals: it's all global from the perspective of code defined
+    # in s.
+    global_namespace = dict(caller_globals, **caller_locals)  # type: ignore
+    local_namespace = {}  # type: typing.Dict[str, typing.Any]
+    exec(textwrap.dedent(s), global_namespace, local_namespace)
+    return local_namespace
+
+
+def subTest(test, *args, **kwargs):
+    """Compatibility shim for unittest.TestCase.subTest.
+
+    Usage: ``with tornado.test.util.subTest(self, x=x):``
+    """
+    try:
+        subTest = test.subTest  # py34+
+    except AttributeError:
+        subTest = contextlib.contextmanager(lambda *a, **kw: (yield))
+    return subTest(*args, **kwargs)
+
+
+@contextlib.contextmanager
+def ignore_deprecation():
+    """Context manager to ignore deprecation warnings."""
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore", DeprecationWarning)
+        yield

.venv/Lib/site-packages/tornado/test/util_test.py

@@ -0,0 +1,308 @@
+from io import StringIO
+import re
+import sys
+import datetime
+import unittest
+
+import tornado.escape
+from tornado.escape import utf8
+from tornado.util import (
+    raise_exc_info,
+    Configurable,
+    exec_in,
+    ArgReplacer,
+    timedelta_to_seconds,
+    import_object,
+    re_unescape,
+    is_finalizing,
+)
+
+import typing
+from typing import cast
+
+if typing.TYPE_CHECKING:
+    from typing import Dict, Any  # noqa: F401
+
+
+class RaiseExcInfoTest(unittest.TestCase):
+    def test_two_arg_exception(self):
+        # This test would fail on python 3 if raise_exc_info were simply
+        # a three-argument raise statement, because TwoArgException
+        # doesn't have a "copy constructor"
+        class TwoArgException(Exception):
+            def __init__(self, a, b):
+                super().__init__()
+                self.a, self.b = a, b
+
+        try:
+            raise TwoArgException(1, 2)
+        except TwoArgException:
+            exc_info = sys.exc_info()
+        try:
+            raise_exc_info(exc_info)
+            self.fail("didn't get expected exception")
+        except TwoArgException as e:
+            self.assertIs(e, exc_info[1])
+
+
+class TestConfigurable(Configurable):
+    @classmethod
+    def configurable_base(cls):
+        return TestConfigurable
+
+    @classmethod
+    def configurable_default(cls):
+        return TestConfig1
+
+
+class TestConfig1(TestConfigurable):
+    def initialize(self, pos_arg=None, a=None):
+        self.a = a
+        self.pos_arg = pos_arg
+
+
+class TestConfig2(TestConfigurable):
+    def initialize(self, pos_arg=None, b=None):
+        self.b = b
+        self.pos_arg = pos_arg
+
+
+class TestConfig3(TestConfigurable):
+    # TestConfig3 is a configuration option that is itself configurable.
+    @classmethod
+    def configurable_base(cls):
+        return TestConfig3
+
+    @classmethod
+    def configurable_default(cls):
+        return TestConfig3A
+
+
+class TestConfig3A(TestConfig3):
+    def initialize(self, a=None):
+        self.a = a
+
+
+class TestConfig3B(TestConfig3):
+    def initialize(self, b=None):
+        self.b = b
+
+
+class ConfigurableTest(unittest.TestCase):
+    def setUp(self):
+        self.saved = TestConfigurable._save_configuration()
+        self.saved3 = TestConfig3._save_configuration()
+
+    def tearDown(self):
+        TestConfigurable._restore_configuration(self.saved)
+        TestConfig3._restore_configuration(self.saved3)
+
+    def checkSubclasses(self):
+        # no matter how the class is configured, it should always be
+        # possible to instantiate the subclasses directly
+        self.assertIsInstance(TestConfig1(), TestConfig1)
+        self.assertIsInstance(TestConfig2(), TestConfig2)
+
+        obj = TestConfig1(a=1)
+        self.assertEqual(obj.a, 1)
+        obj2 = TestConfig2(b=2)
+        self.assertEqual(obj2.b, 2)
+
+    def test_default(self):
+        # In these tests we combine a typing.cast to satisfy mypy with
+        # a runtime type-assertion. Without the cast, mypy would only
+        # let us access attributes of the base class.
+        obj = cast(TestConfig1, TestConfigurable())
+        self.assertIsInstance(obj, TestConfig1)
+        self.assertIs(obj.a, None)
+
+        obj = cast(TestConfig1, TestConfigurable(a=1))
+        self.assertIsInstance(obj, TestConfig1)
+        self.assertEqual(obj.a, 1)
+
+        self.checkSubclasses()
+
+    def test_config_class(self):
+        TestConfigurable.configure(TestConfig2)
+        obj = cast(TestConfig2, TestConfigurable())
+        self.assertIsInstance(obj, TestConfig2)
+        self.assertIs(obj.b, None)
+
+        obj = cast(TestConfig2, TestConfigurable(b=2))
+        self.assertIsInstance(obj, TestConfig2)
+        self.assertEqual(obj.b, 2)
+
+        self.checkSubclasses()
+
+    def test_config_str(self):
+        TestConfigurable.configure("tornado.test.util_test.TestConfig2")
+        obj = cast(TestConfig2, TestConfigurable())
+        self.assertIsInstance(obj, TestConfig2)
+        self.assertIs(obj.b, None)
+
+        obj = cast(TestConfig2, TestConfigurable(b=2))
+        self.assertIsInstance(obj, TestConfig2)
+        self.assertEqual(obj.b, 2)
+
+        self.checkSubclasses()
+
+    def test_config_args(self):
+        TestConfigurable.configure(None, a=3)
+        obj = cast(TestConfig1, TestConfigurable())
+        self.assertIsInstance(obj, TestConfig1)
+        self.assertEqual(obj.a, 3)
+
+        obj = cast(TestConfig1, TestConfigurable(42, a=4))
+        self.assertIsInstance(obj, TestConfig1)
+        self.assertEqual(obj.a, 4)
+        self.assertEqual(obj.pos_arg, 42)
+
+        self.checkSubclasses()
+        # args bound in configure don't apply when using the subclass directly
+        obj = TestConfig1()
+        self.assertIs(obj.a, None)
+
+    def test_config_class_args(self):
+        TestConfigurable.configure(TestConfig2, b=5)
+        obj = cast(TestConfig2, TestConfigurable())
+        self.assertIsInstance(obj, TestConfig2)
+        self.assertEqual(obj.b, 5)
+
+        obj = cast(TestConfig2, TestConfigurable(42, b=6))
+        self.assertIsInstance(obj, TestConfig2)
+        self.assertEqual(obj.b, 6)
+        self.assertEqual(obj.pos_arg, 42)
+
+        self.checkSubclasses()
+        # args bound in configure don't apply when using the subclass directly
+        obj = TestConfig2()
+        self.assertIs(obj.b, None)
+
+    def test_config_multi_level(self):
+        TestConfigurable.configure(TestConfig3, a=1)
+        obj = cast(TestConfig3A, TestConfigurable())
+        self.assertIsInstance(obj, TestConfig3A)
+        self.assertEqual(obj.a, 1)
+
+        TestConfigurable.configure(TestConfig3)
+        TestConfig3.configure(TestConfig3B, b=2)
+        obj2 = cast(TestConfig3B, TestConfigurable())
+        self.assertIsInstance(obj2, TestConfig3B)
+        self.assertEqual(obj2.b, 2)
+
+    def test_config_inner_level(self):
+        # The inner level can be used even when the outer level
+        # doesn't point to it.
+        obj = TestConfig3()
+        self.assertIsInstance(obj, TestConfig3A)
+
+        TestConfig3.configure(TestConfig3B)
+        obj = TestConfig3()
+        self.assertIsInstance(obj, TestConfig3B)
+
+        # Configuring the base doesn't configure the inner.
+        obj2 = TestConfigurable()
+        self.assertIsInstance(obj2, TestConfig1)
+        TestConfigurable.configure(TestConfig2)
+
+        obj3 = TestConfigurable()
+        self.assertIsInstance(obj3, TestConfig2)
+
+        obj = TestConfig3()
+        self.assertIsInstance(obj, TestConfig3B)
+
+
+class UnicodeLiteralTest(unittest.TestCase):
+    def test_unicode_escapes(self):
+        self.assertEqual(utf8(u"\u00e9"), b"\xc3\xa9")
+
+
+class ExecInTest(unittest.TestCase):
+    # TODO(bdarnell): make a version of this test for one of the new
+    # future imports available in python 3.
+    @unittest.skip("no testable future imports")
+    def test_no_inherit_future(self):
+        # This file has from __future__ import print_function...
+        f = StringIO()
+        print("hello", file=f)
+        # ...but the template doesn't
+        exec_in('print >> f, "world"', dict(f=f))
+        self.assertEqual(f.getvalue(), "hello\nworld\n")
+
+
+class ArgReplacerTest(unittest.TestCase):
+    def setUp(self):
+        def function(x, y, callback=None, z=None):
+            pass
+
+        self.replacer = ArgReplacer(function, "callback")
+
+    def test_omitted(self):
+        args = (1, 2)
+        kwargs = dict()  # type: Dict[str, Any]
+        self.assertIs(self.replacer.get_old_value(args, kwargs), None)
+        self.assertEqual(
+            self.replacer.replace("new", args, kwargs),
+            (None, (1, 2), dict(callback="new")),
+        )
+
+    def test_position(self):
+        args = (1, 2, "old", 3)
+        kwargs = dict()  # type: Dict[str, Any]
+        self.assertEqual(self.replacer.get_old_value(args, kwargs), "old")
+        self.assertEqual(
+            self.replacer.replace("new", args, kwargs),
+            ("old", [1, 2, "new", 3], dict()),
+        )
+
+    def test_keyword(self):
+        args = (1,)
+        kwargs = dict(y=2, callback="old", z=3)
+        self.assertEqual(self.replacer.get_old_value(args, kwargs), "old")
+        self.assertEqual(
+            self.replacer.replace("new", args, kwargs),
+            ("old", (1,), dict(y=2, callback="new", z=3)),
+        )
+
+
+class TimedeltaToSecondsTest(unittest.TestCase):
+    def test_timedelta_to_seconds(self):
+        time_delta = datetime.timedelta(hours=1)
+        self.assertEqual(timedelta_to_seconds(time_delta), 3600.0)
+
+
+class ImportObjectTest(unittest.TestCase):
+    def test_import_member(self):
+        self.assertIs(import_object("tornado.escape.utf8"), utf8)
+
+    def test_import_member_unicode(self):
+        self.assertIs(import_object(u"tornado.escape.utf8"), utf8)
+
+    def test_import_module(self):
+        self.assertIs(import_object("tornado.escape"), tornado.escape)
+
+    def test_import_module_unicode(self):
+        # The internal implementation of __import__ differs depending on
+        # whether the thing being imported is a module or not.
+        # This variant requires a byte string in python 2.
+        self.assertIs(import_object(u"tornado.escape"), tornado.escape)
+
+
+class ReUnescapeTest(unittest.TestCase):
+    def test_re_unescape(self):
+        test_strings = ("/favicon.ico", "index.html", "Hello, World!", "!$@#%;")
+        for string in test_strings:
+            self.assertEqual(string, re_unescape(re.escape(string)))
+
+    def test_re_unescape_raises_error_on_invalid_input(self):
+        with self.assertRaises(ValueError):
+            re_unescape("\\d")
+        with self.assertRaises(ValueError):
+            re_unescape("\\b")
+        with self.assertRaises(ValueError):
+            re_unescape("\\Z")
+
+
+class IsFinalizingTest(unittest.TestCase):
+    def test_basic(self):
+        self.assertFalse(is_finalizing())

.venv/Lib/site-packages/tornado/test/websocket_test.py

@@ -0,0 +1,840 @@
+import asyncio
+import functools
+import traceback
+import typing
+import unittest
+
+from tornado.concurrent import Future
+from tornado import gen
+from tornado.httpclient import HTTPError, HTTPRequest
+from tornado.locks import Event
+from tornado.log import gen_log, app_log
+from tornado.simple_httpclient import SimpleAsyncHTTPClient
+from tornado.template import DictLoader
+from tornado.testing import AsyncHTTPTestCase, gen_test, bind_unused_port, ExpectLog
+from tornado.web import Application, RequestHandler
+
+try:
+    import tornado.websocket  # noqa: F401
+    from tornado.util import _websocket_mask_python
+except ImportError:
+    # The unittest module presents misleading errors on ImportError
+    # (it acts as if websocket_test could not be found, hiding the underlying
+    # error).  If we get an ImportError here (which could happen due to
+    # TORNADO_EXTENSION=1), print some extra information before failing.
+    traceback.print_exc()
+    raise
+
+from tornado.websocket import (
+    WebSocketHandler,
+    websocket_connect,
+    WebSocketError,
+    WebSocketClosedError,
+)
+
+try:
+    from tornado import speedups
+except ImportError:
+    speedups = None  # type: ignore
+
+
+class TestWebSocketHandler(WebSocketHandler):
+    """Base class for testing handlers that exposes the on_close event.
+
+    This allows for tests to see the close code and reason on the
+    server side.
+
+    """
+
+    def initialize(self, close_future=None, compression_options=None):
+        self.close_future = close_future
+        self.compression_options = compression_options
+
+    def get_compression_options(self):
+        return self.compression_options
+
+    def on_close(self):
+        if self.close_future is not None:
+            self.close_future.set_result((self.close_code, self.close_reason))
+
+
+class EchoHandler(TestWebSocketHandler):
+    @gen.coroutine
+    def on_message(self, message):
+        try:
+            yield self.write_message(message, isinstance(message, bytes))
+        except asyncio.CancelledError:
+            pass
+        except WebSocketClosedError:
+            pass
+
+
+class ErrorInOnMessageHandler(TestWebSocketHandler):
+    def on_message(self, message):
+        1 / 0
+
+
+class HeaderHandler(TestWebSocketHandler):
+    def open(self):
+        methods_to_test = [
+            functools.partial(self.write, "This should not work"),
+            functools.partial(self.redirect, "http://localhost/elsewhere"),
+            functools.partial(self.set_header, "X-Test", ""),
+            functools.partial(self.set_cookie, "Chocolate", "Chip"),
+            functools.partial(self.set_status, 503),
+            self.flush,
+            self.finish,
+        ]
+        for method in methods_to_test:
+            try:
+                # In a websocket context, many RequestHandler methods
+                # raise RuntimeErrors.
+                method()  # type: ignore
+                raise Exception("did not get expected exception")
+            except RuntimeError:
+                pass
+        self.write_message(self.request.headers.get("X-Test", ""))
+
+
+class HeaderEchoHandler(TestWebSocketHandler):
+    def set_default_headers(self):
+        self.set_header("X-Extra-Response-Header", "Extra-Response-Value")
+
+    def prepare(self):
+        for k, v in self.request.headers.get_all():
+            if k.lower().startswith("x-test"):
+                self.set_header(k, v)
+
+
+class NonWebSocketHandler(RequestHandler):
+    def get(self):
+        self.write("ok")
+
+
+class RedirectHandler(RequestHandler):
+    def get(self):
+        self.redirect("/echo")
+
+
+class CloseReasonHandler(TestWebSocketHandler):
+    def open(self):
+        self.on_close_called = False
+        self.close(1001, "goodbye")
+
+
+class AsyncPrepareHandler(TestWebSocketHandler):
+    @gen.coroutine
+    def prepare(self):
+        yield gen.moment
+
+    def on_message(self, message):
+        self.write_message(message)
+
+
+class PathArgsHandler(TestWebSocketHandler):
+    def open(self, arg):
+        self.write_message(arg)
+
+
+class CoroutineOnMessageHandler(TestWebSocketHandler):
+    def initialize(self, **kwargs):
+        super().initialize(**kwargs)
+        self.sleeping = 0
+
+    @gen.coroutine
+    def on_message(self, message):
+        if self.sleeping > 0:
+            self.write_message("another coroutine is already sleeping")
+        self.sleeping += 1
+        yield gen.sleep(0.01)
+        self.sleeping -= 1
+        self.write_message(message)
+
+
+class RenderMessageHandler(TestWebSocketHandler):
+    def on_message(self, message):
+        self.write_message(self.render_string("message.html", message=message))
+
+
+class SubprotocolHandler(TestWebSocketHandler):
+    def initialize(self, **kwargs):
+        super().initialize(**kwargs)
+        self.select_subprotocol_called = False
+
+    def select_subprotocol(self, subprotocols):
+        if self.select_subprotocol_called:
+            raise Exception("select_subprotocol called twice")
+        self.select_subprotocol_called = True
+        if "goodproto" in subprotocols:
+            return "goodproto"
+        return None
+
+    def open(self):
+        if not self.select_subprotocol_called:
+            raise Exception("select_subprotocol not called")
+        self.write_message("subprotocol=%s" % self.selected_subprotocol)
+
+
+class OpenCoroutineHandler(TestWebSocketHandler):
+    def initialize(self, test, **kwargs):
+        super().initialize(**kwargs)
+        self.test = test
+        self.open_finished = False
+
+    @gen.coroutine
+    def open(self):
+        yield self.test.message_sent.wait()
+        yield gen.sleep(0.010)
+        self.open_finished = True
+
+    def on_message(self, message):
+        if not self.open_finished:
+            raise Exception("on_message called before open finished")
+        self.write_message("ok")
+
+
+class ErrorInOpenHandler(TestWebSocketHandler):
+    def open(self):
+        raise Exception("boom")
+
+
+class ErrorInAsyncOpenHandler(TestWebSocketHandler):
+    async def open(self):
+        await asyncio.sleep(0)
+        raise Exception("boom")
+
+
+class NoDelayHandler(TestWebSocketHandler):
+    def open(self):
+        self.set_nodelay(True)
+        self.write_message("hello")
+
+
+class WebSocketBaseTestCase(AsyncHTTPTestCase):
+    @gen.coroutine
+    def ws_connect(self, path, **kwargs):
+        ws = yield websocket_connect(
+            "ws://127.0.0.1:%d%s" % (self.get_http_port(), path), **kwargs
+        )
+        raise gen.Return(ws)
+
+
+class WebSocketTest(WebSocketBaseTestCase):
+    def get_app(self):
+        self.close_future = Future()  # type: Future[None]
+        return Application(
+            [
+                ("/echo", EchoHandler, dict(close_future=self.close_future)),
+                ("/non_ws", NonWebSocketHandler),
+                ("/redirect", RedirectHandler),
+                ("/header", HeaderHandler, dict(close_future=self.close_future)),
+                (
+                    "/header_echo",
+                    HeaderEchoHandler,
+                    dict(close_future=self.close_future),
+                ),
+                (
+                    "/close_reason",
+                    CloseReasonHandler,
+                    dict(close_future=self.close_future),
+                ),
+                (
+                    "/error_in_on_message",
+                    ErrorInOnMessageHandler,
+                    dict(close_future=self.close_future),
+                ),
+                (
+                    "/async_prepare",
+                    AsyncPrepareHandler,
+                    dict(close_future=self.close_future),
+                ),
+                (
+                    "/path_args/(.*)",
+                    PathArgsHandler,
+                    dict(close_future=self.close_future),
+                ),
+                (
+                    "/coroutine",
+                    CoroutineOnMessageHandler,
+                    dict(close_future=self.close_future),
+                ),
+                ("/render", RenderMessageHandler, dict(close_future=self.close_future)),
+                (
+                    "/subprotocol",
+                    SubprotocolHandler,
+                    dict(close_future=self.close_future),
+                ),
+                (
+                    "/open_coroutine",
+                    OpenCoroutineHandler,
+                    dict(close_future=self.close_future, test=self),
+                ),
+                ("/error_in_open", ErrorInOpenHandler),
+                ("/error_in_async_open", ErrorInAsyncOpenHandler),
+                ("/nodelay", NoDelayHandler),
+            ],
+            template_loader=DictLoader({"message.html": "<b>{{ message }}</b>"}),
+        )
+
+    def get_http_client(self):
+        # These tests require HTTP/1; force the use of SimpleAsyncHTTPClient.
+        return SimpleAsyncHTTPClient()
+
+    def tearDown(self):
+        super().tearDown()
+        RequestHandler._template_loaders.clear()
+
+    def test_http_request(self):
+        # WS server, HTTP client.
+        response = self.fetch("/echo")
+        self.assertEqual(response.code, 400)
+
+    def test_missing_websocket_key(self):
+        response = self.fetch(
+            "/echo",
+            headers={
+                "Connection": "Upgrade",
+                "Upgrade": "WebSocket",
+                "Sec-WebSocket-Version": "13",
+            },
+        )
+        self.assertEqual(response.code, 400)
+
+    def test_bad_websocket_version(self):
+        response = self.fetch(
+            "/echo",
+            headers={
+                "Connection": "Upgrade",
+                "Upgrade": "WebSocket",
+                "Sec-WebSocket-Version": "12",
+            },
+        )
+        self.assertEqual(response.code, 426)
+
+    @gen_test
+    def test_websocket_gen(self):
+        ws = yield self.ws_connect("/echo")
+        yield ws.write_message("hello")
+        response = yield ws.read_message()
+        self.assertEqual(response, "hello")
+
+    def test_websocket_callbacks(self):
+        websocket_connect(
+            "ws://127.0.0.1:%d/echo" % self.get_http_port(), callback=self.stop
+        )
+        ws = self.wait().result()
+        ws.write_message("hello")
+        ws.read_message(self.stop)
+        response = self.wait().result()
+        self.assertEqual(response, "hello")
+        self.close_future.add_done_callback(lambda f: self.stop())
+        ws.close()
+        self.wait()
+
+    @gen_test
+    def test_binary_message(self):
+        ws = yield self.ws_connect("/echo")
+        ws.write_message(b"hello \xe9", binary=True)
+        response = yield ws.read_message()
+        self.assertEqual(response, b"hello \xe9")
+
+    @gen_test
+    def test_unicode_message(self):
+        ws = yield self.ws_connect("/echo")
+        ws.write_message(u"hello \u00e9")
+        response = yield ws.read_message()
+        self.assertEqual(response, u"hello \u00e9")
+
+    @gen_test
+    def test_render_message(self):
+        ws = yield self.ws_connect("/render")
+        ws.write_message("hello")
+        response = yield ws.read_message()
+        self.assertEqual(response, "<b>hello</b>")
+
+    @gen_test
+    def test_error_in_on_message(self):
+        ws = yield self.ws_connect("/error_in_on_message")
+        ws.write_message("hello")
+        with ExpectLog(app_log, "Uncaught exception"):
+            response = yield ws.read_message()
+        self.assertIs(response, None)
+
+    @gen_test
+    def test_websocket_http_fail(self):
+        with self.assertRaises(HTTPError) as cm:
+            yield self.ws_connect("/notfound")
+        self.assertEqual(cm.exception.code, 404)
+
+    @gen_test
+    def test_websocket_http_success(self):
+        with self.assertRaises(WebSocketError):
+            yield self.ws_connect("/non_ws")
+
+    @gen_test
+    def test_websocket_http_redirect(self):
+        with self.assertRaises(HTTPError):
+            yield self.ws_connect("/redirect")
+
+    @gen_test
+    def test_websocket_network_fail(self):
+        sock, port = bind_unused_port()
+        sock.close()
+        with self.assertRaises(IOError):
+            with ExpectLog(gen_log, ".*"):
+                yield websocket_connect(
+                    "ws://127.0.0.1:%d/" % port, connect_timeout=3600
+                )
+
+    @gen_test
+    def test_websocket_close_buffered_data(self):
+        ws = yield websocket_connect("ws://127.0.0.1:%d/echo" % self.get_http_port())
+        ws.write_message("hello")
+        ws.write_message("world")
+        # Close the underlying stream.
+        ws.stream.close()
+
+    @gen_test
+    def test_websocket_headers(self):
+        # Ensure that arbitrary headers can be passed through websocket_connect.
+        ws = yield websocket_connect(
+            HTTPRequest(
+                "ws://127.0.0.1:%d/header" % self.get_http_port(),
+                headers={"X-Test": "hello"},
+            )
+        )
+        response = yield ws.read_message()
+        self.assertEqual(response, "hello")
+
+    @gen_test
+    def test_websocket_header_echo(self):
+        # Ensure that headers can be returned in the response.
+        # Specifically, that arbitrary headers passed through websocket_connect
+        # can be returned.
+        ws = yield websocket_connect(
+            HTTPRequest(
+                "ws://127.0.0.1:%d/header_echo" % self.get_http_port(),
+                headers={"X-Test-Hello": "hello"},
+            )
+        )
+        self.assertEqual(ws.headers.get("X-Test-Hello"), "hello")
+        self.assertEqual(
+            ws.headers.get("X-Extra-Response-Header"), "Extra-Response-Value"
+        )
+
+    @gen_test
+    def test_server_close_reason(self):
+        ws = yield self.ws_connect("/close_reason")
+        msg = yield ws.read_message()
+        # A message of None means the other side closed the connection.
+        self.assertIs(msg, None)
+        self.assertEqual(ws.close_code, 1001)
+        self.assertEqual(ws.close_reason, "goodbye")
+        # The on_close callback is called no matter which side closed.
+        code, reason = yield self.close_future
+        # The client echoed the close code it received to the server,
+        # so the server's close code (returned via close_future) is
+        # the same.
+        self.assertEqual(code, 1001)
+
+    @gen_test
+    def test_client_close_reason(self):
+        ws = yield self.ws_connect("/echo")
+        ws.close(1001, "goodbye")
+        code, reason = yield self.close_future
+        self.assertEqual(code, 1001)
+        self.assertEqual(reason, "goodbye")
+
+    @gen_test
+    def test_write_after_close(self):
+        ws = yield self.ws_connect("/close_reason")
+        msg = yield ws.read_message()
+        self.assertIs(msg, None)
+        with self.assertRaises(WebSocketClosedError):
+            ws.write_message("hello")
+
+    @gen_test
+    def test_async_prepare(self):
+        # Previously, an async prepare method triggered a bug that would
+        # result in a timeout on test shutdown (and a memory leak).
+        ws = yield self.ws_connect("/async_prepare")
+        ws.write_message("hello")
+        res = yield ws.read_message()
+        self.assertEqual(res, "hello")
+
+    @gen_test
+    def test_path_args(self):
+        ws = yield self.ws_connect("/path_args/hello")
+        res = yield ws.read_message()
+        self.assertEqual(res, "hello")
+
+    @gen_test
+    def test_coroutine(self):
+        ws = yield self.ws_connect("/coroutine")
+        # Send both messages immediately, coroutine must process one at a time.
+        yield ws.write_message("hello1")
+        yield ws.write_message("hello2")
+        res = yield ws.read_message()
+        self.assertEqual(res, "hello1")
+        res = yield ws.read_message()
+        self.assertEqual(res, "hello2")
+
+    @gen_test
+    def test_check_origin_valid_no_path(self):
+        port = self.get_http_port()
+
+        url = "ws://127.0.0.1:%d/echo" % port
+        headers = {"Origin": "http://127.0.0.1:%d" % port}
+
+        ws = yield websocket_connect(HTTPRequest(url, headers=headers))
+        ws.write_message("hello")
+        response = yield ws.read_message()
+        self.assertEqual(response, "hello")
+
+    @gen_test
+    def test_check_origin_valid_with_path(self):
+        port = self.get_http_port()
+
+        url = "ws://127.0.0.1:%d/echo" % port
+        headers = {"Origin": "http://127.0.0.1:%d/something" % port}
+
+        ws = yield websocket_connect(HTTPRequest(url, headers=headers))
+        ws.write_message("hello")
+        response = yield ws.read_message()
+        self.assertEqual(response, "hello")
+
+    @gen_test
+    def test_check_origin_invalid_partial_url(self):
+        port = self.get_http_port()
+
+        url = "ws://127.0.0.1:%d/echo" % port
+        headers = {"Origin": "127.0.0.1:%d" % port}
+
+        with self.assertRaises(HTTPError) as cm:
+            yield websocket_connect(HTTPRequest(url, headers=headers))
+        self.assertEqual(cm.exception.code, 403)
+
+    @gen_test
+    def test_check_origin_invalid(self):
+        port = self.get_http_port()
+
+        url = "ws://127.0.0.1:%d/echo" % port
+        # Host is 127.0.0.1, which should not be accessible from some other
+        # domain
+        headers = {"Origin": "http://somewhereelse.com"}
+
+        with self.assertRaises(HTTPError) as cm:
+            yield websocket_connect(HTTPRequest(url, headers=headers))
+
+        self.assertEqual(cm.exception.code, 403)
+
+    @gen_test
+    def test_check_origin_invalid_subdomains(self):
+        port = self.get_http_port()
+
+        url = "ws://localhost:%d/echo" % port
+        # Subdomains should be disallowed by default.  If we could pass a
+        # resolver to websocket_connect we could test sibling domains as well.
+        headers = {"Origin": "http://subtenant.localhost"}
+
+        with self.assertRaises(HTTPError) as cm:
+            yield websocket_connect(HTTPRequest(url, headers=headers))
+
+        self.assertEqual(cm.exception.code, 403)
+
+    @gen_test
+    def test_subprotocols(self):
+        ws = yield self.ws_connect(
+            "/subprotocol", subprotocols=["badproto", "goodproto"]
+        )
+        self.assertEqual(ws.selected_subprotocol, "goodproto")
+        res = yield ws.read_message()
+        self.assertEqual(res, "subprotocol=goodproto")
+
+    @gen_test
+    def test_subprotocols_not_offered(self):
+        ws = yield self.ws_connect("/subprotocol")
+        self.assertIs(ws.selected_subprotocol, None)
+        res = yield ws.read_message()
+        self.assertEqual(res, "subprotocol=None")
+
+    @gen_test
+    def test_open_coroutine(self):
+        self.message_sent = Event()
+        ws = yield self.ws_connect("/open_coroutine")
+        yield ws.write_message("hello")
+        self.message_sent.set()
+        res = yield ws.read_message()
+        self.assertEqual(res, "ok")
+
+    @gen_test
+    def test_error_in_open(self):
+        with ExpectLog(app_log, "Uncaught exception"):
+            ws = yield self.ws_connect("/error_in_open")
+            res = yield ws.read_message()
+        self.assertIsNone(res)
+
+    @gen_test
+    def test_error_in_async_open(self):
+        with ExpectLog(app_log, "Uncaught exception"):
+            ws = yield self.ws_connect("/error_in_async_open")
+            res = yield ws.read_message()
+        self.assertIsNone(res)
+
+    @gen_test
+    def test_nodelay(self):
+        ws = yield self.ws_connect("/nodelay")
+        res = yield ws.read_message()
+        self.assertEqual(res, "hello")
+
+
+class NativeCoroutineOnMessageHandler(TestWebSocketHandler):
+    def initialize(self, **kwargs):
+        super().initialize(**kwargs)
+        self.sleeping = 0
+
+    async def on_message(self, message):
+        if self.sleeping > 0:
+            self.write_message("another coroutine is already sleeping")
+        self.sleeping += 1
+        await gen.sleep(0.01)
+        self.sleeping -= 1
+        self.write_message(message)
+
+
+class WebSocketNativeCoroutineTest(WebSocketBaseTestCase):
+    def get_app(self):
+        return Application([("/native", NativeCoroutineOnMessageHandler)])
+
+    @gen_test
+    def test_native_coroutine(self):
+        ws = yield self.ws_connect("/native")
+        # Send both messages immediately, coroutine must process one at a time.
+        yield ws.write_message("hello1")
+        yield ws.write_message("hello2")
+        res = yield ws.read_message()
+        self.assertEqual(res, "hello1")
+        res = yield ws.read_message()
+        self.assertEqual(res, "hello2")
+
+
+class CompressionTestMixin(object):
+    MESSAGE = "Hello world. Testing 123 123"
+
+    def get_app(self):
+        class LimitedHandler(TestWebSocketHandler):
+            @property
+            def max_message_size(self):
+                return 1024
+
+            def on_message(self, message):
+                self.write_message(str(len(message)))
+
+        return Application(
+            [
+                (
+                    "/echo",
+                    EchoHandler,
+                    dict(compression_options=self.get_server_compression_options()),
+                ),
+                (
+                    "/limited",
+                    LimitedHandler,
+                    dict(compression_options=self.get_server_compression_options()),
+                ),
+            ]
+        )
+
+    def get_server_compression_options(self):
+        return None
+
+    def get_client_compression_options(self):
+        return None
+
+    def verify_wire_bytes(self, bytes_in: int, bytes_out: int) -> None:
+        raise NotImplementedError()
+
+    @gen_test
+    def test_message_sizes(self: typing.Any):
+        ws = yield self.ws_connect(
+            "/echo", compression_options=self.get_client_compression_options()
+        )
+        # Send the same message three times so we can measure the
+        # effect of the context_takeover options.
+        for i in range(3):
+            ws.write_message(self.MESSAGE)
+            response = yield ws.read_message()
+            self.assertEqual(response, self.MESSAGE)
+        self.assertEqual(ws.protocol._message_bytes_out, len(self.MESSAGE) * 3)
+        self.assertEqual(ws.protocol._message_bytes_in, len(self.MESSAGE) * 3)
+        self.verify_wire_bytes(ws.protocol._wire_bytes_in, ws.protocol._wire_bytes_out)
+
+    @gen_test
+    def test_size_limit(self: typing.Any):
+        ws = yield self.ws_connect(
+            "/limited", compression_options=self.get_client_compression_options()
+        )
+        # Small messages pass through.
+        ws.write_message("a" * 128)
+        response = yield ws.read_message()
+        self.assertEqual(response, "128")
+        # This message is too big after decompression, but it compresses
+        # down to a size that will pass the initial checks.
+        ws.write_message("a" * 2048)
+        response = yield ws.read_message()
+        self.assertIsNone(response)
+
+
+class UncompressedTestMixin(CompressionTestMixin):
+    """Specialization of CompressionTestMixin when we expect no compression."""
+
+    def verify_wire_bytes(self: typing.Any, bytes_in, bytes_out):
+        # Bytes out includes the 4-byte mask key per message.
+        self.assertEqual(bytes_out, 3 * (len(self.MESSAGE) + 6))
+        self.assertEqual(bytes_in, 3 * (len(self.MESSAGE) + 2))
+
+
+class NoCompressionTest(UncompressedTestMixin, WebSocketBaseTestCase):
+    pass
+
+
+# If only one side tries to compress, the extension is not negotiated.
+class ServerOnlyCompressionTest(UncompressedTestMixin, WebSocketBaseTestCase):
+    def get_server_compression_options(self):
+        return {}
+
+
+class ClientOnlyCompressionTest(UncompressedTestMixin, WebSocketBaseTestCase):
+    def get_client_compression_options(self):
+        return {}
+
+
+class DefaultCompressionTest(CompressionTestMixin, WebSocketBaseTestCase):
+    def get_server_compression_options(self):
+        return {}
+
+    def get_client_compression_options(self):
+        return {}
+
+    def verify_wire_bytes(self, bytes_in, bytes_out):
+        self.assertLess(bytes_out, 3 * (len(self.MESSAGE) + 6))
+        self.assertLess(bytes_in, 3 * (len(self.MESSAGE) + 2))
+        # Bytes out includes the 4 bytes mask key per message.
+        self.assertEqual(bytes_out, bytes_in + 12)
+
+
+class MaskFunctionMixin(object):
+    # Subclasses should define self.mask(mask, data)
+    def mask(self, mask: bytes, data: bytes) -> bytes:
+        raise NotImplementedError()
+
+    def test_mask(self: typing.Any):
+        self.assertEqual(self.mask(b"abcd", b""), b"")
+        self.assertEqual(self.mask(b"abcd", b"b"), b"\x03")
+        self.assertEqual(self.mask(b"abcd", b"54321"), b"TVPVP")
+        self.assertEqual(self.mask(b"ZXCV", b"98765432"), b"c`t`olpd")
+        # Include test cases with \x00 bytes (to ensure that the C
+        # extension isn't depending on null-terminated strings) and
+        # bytes with the high bit set (to smoke out signedness issues).
+        self.assertEqual(
+            self.mask(b"\x00\x01\x02\x03", b"\xff\xfb\xfd\xfc\xfe\xfa"),
+            b"\xff\xfa\xff\xff\xfe\xfb",
+        )
+        self.assertEqual(
+            self.mask(b"\xff\xfb\xfd\xfc", b"\x00\x01\x02\x03\x04\x05"),
+            b"\xff\xfa\xff\xff\xfb\xfe",
+        )
+
+
+class PythonMaskFunctionTest(MaskFunctionMixin, unittest.TestCase):
+    def mask(self, mask, data):
+        return _websocket_mask_python(mask, data)
+
+
+@unittest.skipIf(speedups is None, "tornado.speedups module not present")
+class CythonMaskFunctionTest(MaskFunctionMixin, unittest.TestCase):
+    def mask(self, mask, data):
+        return speedups.websocket_mask(mask, data)
+
+
+class ServerPeriodicPingTest(WebSocketBaseTestCase):
+    def get_app(self):
+        class PingHandler(TestWebSocketHandler):
+            def on_pong(self, data):
+                self.write_message("got pong")
+
+        return Application([("/", PingHandler)], websocket_ping_interval=0.01)
+
+    @gen_test
+    def test_server_ping(self):
+        ws = yield self.ws_connect("/")
+        for i in range(3):
+            response = yield ws.read_message()
+            self.assertEqual(response, "got pong")
+        # TODO: test that the connection gets closed if ping responses stop.
+
+
+class ClientPeriodicPingTest(WebSocketBaseTestCase):
+    def get_app(self):
+        class PingHandler(TestWebSocketHandler):
+            def on_ping(self, data):
+                self.write_message("got ping")
+
+        return Application([("/", PingHandler)])
+
+    @gen_test
+    def test_client_ping(self):
+        ws = yield self.ws_connect("/", ping_interval=0.01)
+        for i in range(3):
+            response = yield ws.read_message()
+            self.assertEqual(response, "got ping")
+        # TODO: test that the connection gets closed if ping responses stop.
+
+
+class ManualPingTest(WebSocketBaseTestCase):
+    def get_app(self):
+        class PingHandler(TestWebSocketHandler):
+            def on_ping(self, data):
+                self.write_message(data, binary=isinstance(data, bytes))
+
+        return Application([("/", PingHandler)])
+
+    @gen_test
+    def test_manual_ping(self):
+        ws = yield self.ws_connect("/")
+
+        self.assertRaises(ValueError, ws.ping, "a" * 126)
+
+        ws.ping("hello")
+        resp = yield ws.read_message()
+        # on_ping always sees bytes.
+        self.assertEqual(resp, b"hello")
+
+        ws.ping(b"binary hello")
+        resp = yield ws.read_message()
+        self.assertEqual(resp, b"binary hello")
+
+
+class MaxMessageSizeTest(WebSocketBaseTestCase):
+    def get_app(self):
+        return Application([("/", EchoHandler)], websocket_max_message_size=1024)
+
+    @gen_test
+    def test_large_message(self):
+        ws = yield self.ws_connect("/")
+
+        # Write a message that is allowed.
+        msg = "a" * 1024
+        ws.write_message(msg)
+        resp = yield ws.read_message()
+        self.assertEqual(resp, msg)
+
+        # Write a message that is too large.
+        ws.write_message(msg + "b")
+        resp = yield ws.read_message()
+        # A message of None means the other side closed the connection.
+        self.assertIs(resp, None)
+        self.assertEqual(ws.close_code, 1009)
+        self.assertEqual(ws.close_reason, "message too big")
+        # TODO: Needs tests of messages split over multiple
+        # continuation frames.

.venv/Lib/site-packages/tornado/test/wsgi_test.py

@@ -0,0 +1,20 @@
+from wsgiref.validate import validator
+
+from tornado.testing import AsyncHTTPTestCase
+from tornado.wsgi import WSGIContainer
+
+
+class WSGIContainerTest(AsyncHTTPTestCase):
+    # TODO: Now that WSGIAdapter is gone, this is a pretty weak test.
+    def wsgi_app(self, environ, start_response):
+        status = "200 OK"
+        response_headers = [("Content-Type", "text/plain")]
+        start_response(status, response_headers)
+        return [b"Hello world!"]
+
+    def get_app(self):
+        return WSGIContainer(validator(self.wsgi_app))
+
+    def test_simple(self):
+        response = self.fetch("/")
+        self.assertEqual(response.body, b"Hello world!")