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.venv/Lib/site-packages/notebook/tests/selenium/test_interrupt.py

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+from .utils import wait_for_selector
+
+def interrupt_from_menu(notebook):
+    # Click interrupt button in kernel menu
+    notebook.browser.find_element_by_id('kernellink').click()
+    wait_for_selector(notebook.browser, '#int_kernel', single=True).click()
+
+def interrupt_from_keyboard(notebook):
+    notebook.body.send_keys("ii")
+
+
+def test_interrupt(notebook):
+    """ Test the interrupt function using both the button in the Kernel menu and the keyboard shortcut "ii"
+
+        Having trouble accessing the Interrupt message when execution is halted. I am assuming that the
+        message does not lie in the "outputs" field of the cell's JSON object. Using a timeout work-around for
+        test with an infinite loop. We know the interrupt function is working if this test passes.
+        Hope this is a good start.
+    """
+
+    text = ('import time\n'
+            'for x in range(3):\n'
+            '   time.sleep(1)')
+
+    notebook.edit_cell(index=0, content=text)
+
+    for interrupt_method in (interrupt_from_menu, interrupt_from_keyboard):
+        notebook.clear_cell_output(0)
+        notebook.to_command_mode()
+        notebook.execute_cell(0)
+
+        interrupt_method(notebook)
+
+        # Wait for an output to appear
+        output = wait_for_selector(notebook.browser, '.output_subarea', single=True)
+        assert 'KeyboardInterrupt' in output.text