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.venv/Lib/site-packages/pyarrow/include/arrow/util/test_common.h

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+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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.
+
+#pragma once
+
+#include <iosfwd>
+
+#include "arrow/testing/gtest_util.h"
+#include "arrow/util/iterator.h"
+
+namespace arrow {
+
+struct TestInt {
+  TestInt();
+  TestInt(int i);  // NOLINT runtime/explicit
+  int value;
+
+  bool operator==(const TestInt& other) const;
+
+  friend std::ostream& operator<<(std::ostream& os, const TestInt& v);
+};
+
+template <>
+struct IterationTraits<TestInt> {
+  static TestInt End() { return TestInt(); }
+  static bool IsEnd(const TestInt& val) { return val == IterationTraits<TestInt>::End(); }
+};
+
+struct TestStr {
+  TestStr();
+  TestStr(const std::string& s);  // NOLINT runtime/explicit
+  TestStr(const char* s);         // NOLINT runtime/explicit
+  explicit TestStr(const TestInt& test_int);
+  std::string value;
+
+  bool operator==(const TestStr& other) const;
+
+  friend std::ostream& operator<<(std::ostream& os, const TestStr& v);
+};
+
+template <>
+struct IterationTraits<TestStr> {
+  static TestStr End() { return TestStr(); }
+  static bool IsEnd(const TestStr& val) { return val == IterationTraits<TestStr>::End(); }
+};
+
+std::vector<TestInt> RangeVector(unsigned int max, unsigned int step = 1);
+
+template <typename T>
+inline Iterator<T> VectorIt(std::vector<T> v) {
+  return MakeVectorIterator<T>(std::move(v));
+}
+
+template <typename T>
+inline Iterator<T> PossiblySlowVectorIt(std::vector<T> v, bool slow = false) {
+  auto iterator = MakeVectorIterator<T>(std::move(v));
+  if (slow) {
+    return MakeTransformedIterator<T, T>(std::move(iterator),
+                                         [](T item) -> Result<TransformFlow<T>> {
+                                           SleepABit();
+                                           return TransformYield(item);
+                                         });
+  } else {
+    return iterator;
+  }
+}
+
+template <typename T>
+inline void AssertIteratorExhausted(Iterator<T>& it) {
+  ASSERT_OK_AND_ASSIGN(T next, it.Next());
+  ASSERT_TRUE(IsIterationEnd(next));
+}
+
+Transformer<TestInt, TestStr> MakeFilter(std::function<bool(TestInt&)> filter);
+
+}  // namespace arrow