chromium/third_party/abseil-cpp/absl/container/internal/test_allocator.h

// Copyright 2018 The Abseil Authors.
//
// 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
//
//      https://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.

#ifndef ABSL_CONTAINER_INTERNAL_TEST_ALLOCATOR_H_
#define ABSL_CONTAINER_INTERNAL_TEST_ALLOCATOR_H_

#include <cassert>
#include <cstddef>
#include <cstdint>
#include <memory>
#include <type_traits>

#include "gtest/gtest.h"
#include "absl/base/config.h"

namespace absl {
ABSL_NAMESPACE_BEGIN
namespace container_internal {

// This is a stateful allocator, but the state lives outside of the
// allocator (in whatever test is using the allocator). This is odd
// but helps in tests where the allocator is propagated into nested
// containers - that chain of allocators uses the same state and is
// thus easier to query for aggregate allocation information.
template <typename T>
class CountingAllocator { … };

template <typename T>
struct CopyAssignPropagatingCountingAlloc : public CountingAllocator<T> { … };

template <typename T>
struct MoveAssignPropagatingCountingAlloc : public CountingAllocator<T> { … };

template <typename T>
struct SwapPropagatingCountingAlloc : public CountingAllocator<T> { … };

// Tries to allocate memory at the minimum alignment even when the default
// allocator uses a higher alignment.
template <typename T>
struct MinimumAlignmentAlloc : std::allocator<T> { … };

inline bool IsAssertEnabled() { … }

template <template <class Alloc> class Container>
void TestCopyAssignAllocPropagation() { … }

template <template <class Alloc> class Container>
void TestMoveAssignAllocPropagation() { … }

template <template <class Alloc> class Container>
void TestSwapAllocPropagation() { … }

template <template <class Alloc> class Container>
void TestAllocPropagation() { … }

}  // namespace container_internal
ABSL_NAMESPACE_END
}  // namespace absl

#endif  // ABSL_CONTAINER_INTERNAL_TEST_ALLOCATOR_H_