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- // Copyright 2022 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "base/memory/values_equivalent.h"
- #include "base/memory/raw_ptr.h"
- #include "base/memory/ref_counted.h"
- #include "base/memory/scoped_refptr.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace base {
- TEST(ValuesEquivalentTest, Comparisons) {
- int a = 1234;
- int b1 = 5678;
- int b2 = 5678;
- EXPECT_TRUE(ValuesEquivalent<int>(nullptr, nullptr));
- EXPECT_FALSE(ValuesEquivalent<int>(&a, nullptr));
- EXPECT_FALSE(ValuesEquivalent<int>(nullptr, &a));
- EXPECT_FALSE(ValuesEquivalent(&a, &b1));
- EXPECT_TRUE(ValuesEquivalent(&a, &a));
- EXPECT_TRUE(ValuesEquivalent(&b1, &b2));
- }
- TEST(ValuesEquivalentTest, UniquePtr) {
- auto a = std::make_unique<int>(1234);
- auto b1 = std::make_unique<int>(5678);
- auto b2 = std::make_unique<int>(5678);
- EXPECT_TRUE(ValuesEquivalent(std::unique_ptr<int>(), std::unique_ptr<int>()));
- EXPECT_FALSE(ValuesEquivalent(a, std::unique_ptr<int>()));
- EXPECT_FALSE(ValuesEquivalent(std::unique_ptr<int>(), a));
- EXPECT_FALSE(ValuesEquivalent(a, b1));
- EXPECT_TRUE(ValuesEquivalent(a, a));
- EXPECT_TRUE(ValuesEquivalent(b1, b2));
- }
- TEST(ValuesEquivalentTest, ScopedRefPtr) {
- struct Wrapper : public RefCounted<Wrapper> {
- explicit Wrapper(int value) : value(value) {}
- int value;
- bool operator==(const Wrapper& other) const { return value == other.value; }
- protected:
- friend class RefCounted<Wrapper>;
- virtual ~Wrapper() = default;
- };
- auto a = MakeRefCounted<Wrapper>(1234);
- auto b1 = MakeRefCounted<Wrapper>(5678);
- auto b2 = MakeRefCounted<Wrapper>(5678);
- EXPECT_TRUE(
- ValuesEquivalent(scoped_refptr<Wrapper>(), scoped_refptr<Wrapper>()));
- EXPECT_FALSE(ValuesEquivalent(a, scoped_refptr<Wrapper>()));
- EXPECT_FALSE(ValuesEquivalent(scoped_refptr<Wrapper>(), a));
- EXPECT_FALSE(ValuesEquivalent(a, b1));
- EXPECT_TRUE(ValuesEquivalent(a, a));
- EXPECT_TRUE(ValuesEquivalent(b1, b2));
- }
- TEST(ValuesEquivalentTest, CapitalGetPtr) {
- class IntPointer {
- public:
- explicit IntPointer(int* pointer) : pointer_(pointer) {}
- const int* Get() const { return pointer_; }
- private:
- raw_ptr<int> pointer_ = nullptr;
- };
- auto a = 1234;
- auto b1 = 5678;
- auto b2 = 5678;
- EXPECT_TRUE(ValuesEquivalent(IntPointer(nullptr), IntPointer(nullptr)));
- EXPECT_FALSE(ValuesEquivalent(IntPointer(&a), IntPointer(nullptr)));
- EXPECT_FALSE(ValuesEquivalent(IntPointer(nullptr), IntPointer(&a)));
- EXPECT_FALSE(ValuesEquivalent(IntPointer(&a), IntPointer(&b1)));
- EXPECT_TRUE(ValuesEquivalent(IntPointer(&a), IntPointer(&a)));
- EXPECT_TRUE(ValuesEquivalent(IntPointer(&b1), IntPointer(&b2)));
- }
- TEST(ValuesEquivalentTest, BypassEqualsOperator) {
- struct NeverEqual {
- bool operator==(const NeverEqual& other) const { return false; }
- } a, b;
- ASSERT_FALSE(a == a);
- ASSERT_FALSE(a == b);
- EXPECT_TRUE(ValuesEquivalent(&a, &a));
- EXPECT_FALSE(ValuesEquivalent(&a, &b));
- }
- } // namespace base
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