| /** |
| * 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. |
| **/ |
| |
| #include "utility/ScopedReassignment.hpp" |
| |
| #include "utility/Macros.hpp" |
| |
| #include "gtest/gtest.h" |
| |
| namespace quickstep { |
| |
| namespace { |
| const int kOldValue = 10; |
| const int kNewValue = 20; |
| } // namespace |
| |
| /** |
| * @brief A test class that is movable but not copyable. |
| */ |
| class NonCopyable { |
| public: |
| explicit NonCopyable(const int value) |
| : value_(value) {} |
| |
| explicit NonCopyable(NonCopyable &&other) |
| : value_(other.value_) {} |
| |
| NonCopyable& operator=(NonCopyable &&other) { |
| value_ = other.value_; |
| return *this; |
| } |
| |
| int value() const { |
| return value_; |
| } |
| |
| private: |
| int value_; |
| |
| DISALLOW_COPY_AND_ASSIGN(NonCopyable); |
| }; |
| |
| /** |
| * @brief A test class that is copyable but not movable. |
| */ |
| class NonMovable { |
| public: |
| explicit NonMovable(const int value) |
| : value_(value) {} |
| |
| explicit NonMovable(const NonMovable &other) |
| : value_(other.value_) {} |
| |
| NonMovable& operator=(const NonMovable &other) { |
| value_ = other.value_; |
| return *this; |
| } |
| |
| int value() const { |
| return value_; |
| } |
| |
| private: |
| int value_; |
| }; |
| |
| /** |
| * @brief A test class that is copyable and movable. |
| */ |
| class CopyableMovable { |
| public: |
| explicit CopyableMovable(const int value) |
| : value_(value) {} |
| |
| explicit CopyableMovable(const CopyableMovable &other) |
| : copy_constructed_(true), |
| value_(other.value_) {} |
| |
| explicit CopyableMovable(CopyableMovable &&other) |
| : value_(other.value_) {} |
| |
| CopyableMovable& operator=(const CopyableMovable &other) { |
| value_ = other.value_; |
| copy_assigned_ = true; |
| return *this; |
| } |
| |
| CopyableMovable& operator=(CopyableMovable &&other) { |
| value_ = other.value_; |
| copy_assigned_ = false; |
| return *this; |
| } |
| |
| int value() const { |
| return value_; |
| } |
| |
| bool copy_constructed() const { |
| return copy_constructed_; |
| } |
| |
| bool copy_assigned() const { |
| return copy_assigned_; |
| } |
| |
| private: |
| const bool copy_constructed_ = false; |
| int value_; |
| bool copy_assigned_ = false; |
| }; |
| |
| TEST(ScopedReassignment, NonCopyableTest) { |
| NonCopyable non_copyable(kOldValue); |
| { |
| NonCopyable other(kNewValue); |
| ScopedReassignment<NonCopyable> reassign(&non_copyable, std::move(other)); |
| EXPECT_EQ(kNewValue, non_copyable.value()); |
| } |
| EXPECT_EQ(kOldValue, non_copyable.value()); |
| |
| { |
| ScopedReassignment<NonCopyable> reassign(&non_copyable, NonCopyable(kNewValue)); |
| EXPECT_EQ(kNewValue, non_copyable.value()); |
| } |
| EXPECT_EQ(kOldValue, non_copyable.value()); |
| } |
| |
| TEST(ScopedReassignment, NonMovableTest) { |
| NonMovable non_movable(kOldValue); |
| { |
| NonMovable other(kNewValue); |
| ScopedReassignment<NonMovable> reassign(&non_movable, other); |
| EXPECT_EQ(kNewValue, non_movable.value()); |
| } |
| EXPECT_EQ(kOldValue, non_movable.value()); |
| |
| { |
| ScopedReassignment<NonMovable> reassign(&non_movable, NonMovable(kNewValue)); |
| EXPECT_EQ(kNewValue, non_movable.value()); |
| } |
| EXPECT_EQ(kOldValue, non_movable.value()); |
| } |
| |
| TEST(ScopedReassignment, CopyableMovableTest) { |
| CopyableMovable copyable_movable(kOldValue); |
| { |
| CopyableMovable other(kNewValue); |
| ScopedReassignment<CopyableMovable> reassign(©able_movable, other); |
| EXPECT_EQ(kNewValue, copyable_movable.value()); |
| EXPECT_FALSE(reassign.old_value().copy_constructed()); |
| EXPECT_TRUE(copyable_movable.copy_assigned()); |
| } |
| EXPECT_EQ(kOldValue, copyable_movable.value()); |
| EXPECT_FALSE(copyable_movable.copy_assigned()); |
| |
| { |
| CopyableMovable other(kNewValue); |
| ScopedReassignment<CopyableMovable> reassign(©able_movable, std::move(other)); |
| EXPECT_EQ(kNewValue, copyable_movable.value()); |
| EXPECT_FALSE(reassign.old_value().copy_constructed()); |
| EXPECT_FALSE(copyable_movable.copy_assigned()); |
| } |
| EXPECT_EQ(kOldValue, copyable_movable.value()); |
| EXPECT_FALSE(copyable_movable.copy_assigned()); |
| } |
| |
| } // namespace quickstep |