| // Copyright 2020 Google LLC |
| // |
| // 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 "internal/platform/count_down_latch.h" |
| |
| #include "gtest/gtest.h" |
| #include "internal/platform/single_thread_executor.h" |
| |
| namespace location { |
| namespace nearby { |
| namespace { |
| |
| TEST(CountDownLatch, ConstructorDestructorWorks) { CountDownLatch latch(1); } |
| |
| TEST(CountDownLatch, LatchAwaitCanWait) { |
| CountDownLatch latch(1); |
| SingleThreadExecutor executor; |
| std::atomic_bool done = false; |
| executor.Execute([&done, &latch]() { |
| done = true; |
| latch.CountDown(); |
| }); |
| latch.Await(); |
| EXPECT_TRUE(done); |
| } |
| |
| TEST(CountDownLatch, LatchExtraCountDownIgnored) { |
| CountDownLatch latch(1); |
| SingleThreadExecutor executor; |
| std::atomic_bool done = false; |
| executor.Execute([&done, &latch]() { |
| done = true; |
| latch.CountDown(); |
| latch.CountDown(); |
| latch.CountDown(); |
| }); |
| latch.Await(); |
| EXPECT_TRUE(done); |
| } |
| |
| TEST(CountDownLatch, LatchAwaitWithTimeoutCanExpire) { |
| CountDownLatch latch(1); |
| SingleThreadExecutor executor; |
| auto response = latch.Await(absl::Milliseconds(100)); |
| EXPECT_TRUE(response.ok()); |
| EXPECT_FALSE(response.result()); |
| } |
| |
| TEST(CountDownLatch, InitialCountZero_AwaitDoesNotBlock) { |
| CountDownLatch latch(0); |
| |
| auto response = latch.Await(); |
| |
| EXPECT_TRUE(response.Ok()); |
| } |
| |
| } // namespace |
| } // namespace nearby |
| } // namespace location |