| // 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. |
| |
| #include "absl/base/internal/atomic_hook.h" |
| |
| #include "gtest/gtest.h" |
| #include "absl/base/attributes.h" |
| |
| namespace { |
| |
| int value = 0; |
| void TestHook(int x) { value = x; } |
| |
| TEST(AtomicHookTest, NoDefaultFunction) { |
| ABSL_CONST_INIT static absl::base_internal::AtomicHook<void(*)(int)> hook; |
| value = 0; |
| |
| // Test the default DummyFunction. |
| EXPECT_TRUE(hook.Load() == nullptr); |
| EXPECT_EQ(value, 0); |
| hook(1); |
| EXPECT_EQ(value, 0); |
| |
| // Test a stored hook. |
| hook.Store(TestHook); |
| EXPECT_TRUE(hook.Load() == TestHook); |
| EXPECT_EQ(value, 0); |
| hook(1); |
| EXPECT_EQ(value, 1); |
| |
| // Calling Store() with the same hook should not crash. |
| hook.Store(TestHook); |
| EXPECT_TRUE(hook.Load() == TestHook); |
| EXPECT_EQ(value, 1); |
| hook(2); |
| EXPECT_EQ(value, 2); |
| } |
| |
| TEST(AtomicHookTest, WithDefaultFunction) { |
| // Set the default value to TestHook at compile-time. |
| ABSL_CONST_INIT static absl::base_internal::AtomicHook<void (*)(int)> hook( |
| TestHook); |
| value = 0; |
| |
| // Test the default value is TestHook. |
| EXPECT_TRUE(hook.Load() == TestHook); |
| EXPECT_EQ(value, 0); |
| hook(1); |
| EXPECT_EQ(value, 1); |
| |
| // Calling Store() with the same hook should not crash. |
| hook.Store(TestHook); |
| EXPECT_TRUE(hook.Load() == TestHook); |
| EXPECT_EQ(value, 1); |
| hook(2); |
| EXPECT_EQ(value, 2); |
| } |
| |
| } // namespace |