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e356dbca2c
When flutter/synchronization was first authored, we did not own fml (it was called fxl then). Now we do, so use a single spot for such utilities. The pipeline was meant to be a general purpose utility that was only ever used by the animator (it even has animator specific tracing), so move that to shell instead (where the animator resides).
28 lines
686 B
C++
28 lines
686 B
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <thread>
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#include "flutter/fml/synchronization/semaphore.h"
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#include "gtest/gtest.h"
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TEST(SemaphoreTest, SimpleValidity) {
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fml::Semaphore sem(100);
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ASSERT_TRUE(sem.IsValid());
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}
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TEST(SemaphoreTest, WaitOnZero) {
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fml::Semaphore sem(0);
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ASSERT_FALSE(sem.TryWait());
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}
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TEST(SemaphoreTest, WaitOnZeroSignalThenWait) {
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fml::Semaphore sem(0);
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ASSERT_FALSE(sem.TryWait());
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std::thread thread([&sem]() { sem.Signal(); });
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thread.join();
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ASSERT_TRUE(sem.TryWait());
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ASSERT_FALSE(sem.TryWait());
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}
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