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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "components/sync/base/scoped_event_signal.h" | |
| 6 | |
| 7 #include <memory> | |
| 8 #include <utility> | |
| 9 | |
| 10 #include "base/synchronization/waitable_event.h" | |
| 11 #include "testing/gtest/include/gtest/gtest.h" | |
| 12 | |
| 13 namespace syncer { | |
| 14 | |
| 15 TEST(ScopedEventSignalTest, SignalAtEndOfScope) { | |
| 16 base::WaitableEvent event(base::WaitableEvent::ResetPolicy::MANUAL, | |
| 17 base::WaitableEvent::InitialState::NOT_SIGNALED); | |
| 18 | |
| 19 { | |
| 20 ScopedEventSignal scoped_event_signal(&event); | |
| 21 EXPECT_FALSE(event.IsSignaled()); | |
| 22 } | |
| 23 | |
| 24 EXPECT_TRUE(event.IsSignaled()); | |
| 25 } | |
| 26 | |
| 27 TEST(ScopedEventSignalTest, MoveConstructor) { | |
| 28 base::WaitableEvent event(base::WaitableEvent::ResetPolicy::MANUAL, | |
| 29 base::WaitableEvent::InitialState::NOT_SIGNALED); | |
| 30 | |
| 31 { | |
| 32 ScopedEventSignal scoped_event_signal(&event); | |
| 33 EXPECT_FALSE(event.IsSignaled()); | |
| 34 | |
| 35 { | |
| 36 ScopedEventSignal other_scoped_event_signal( | |
| 37 std::move(scoped_event_signal)); | |
| 38 EXPECT_FALSE(event.IsSignaled()); | |
| 39 } | |
| 40 | |
| 41 // |event| is signaled when |other_scoped_event_signal| is destroyed. | |
| 42 EXPECT_TRUE(event.IsSignaled()); | |
| 43 | |
| 44 event.Reset(); | |
| 45 } | |
| 46 | |
| 47 // |event| is not signaled when |scoped_signal_event| is destroyed. | |
| 48 EXPECT_FALSE(event.IsSignaled()); | |
| 49 } | |
| 50 | |
| 51 TEST(ScopedEventSignalTest, MoveAssignOperator) { | |
| 52 base::WaitableEvent event(base::WaitableEvent::ResetPolicy::MANUAL, | |
| 53 base::WaitableEvent::InitialState::NOT_SIGNALED); | |
| 54 | |
| 55 { | |
| 56 ScopedEventSignal scoped_event_signal_a(&event); | |
| 57 EXPECT_FALSE(event.IsSignaled()); | |
| 58 | |
| 59 { | |
| 60 base::WaitableEvent other_event( | |
| 61 base::WaitableEvent::ResetPolicy::MANUAL, | |
| 62 base::WaitableEvent::InitialState::NOT_SIGNALED); | |
| 63 ScopedEventSignal scoped_event_signal_b(&other_event); | |
| 64 | |
| 65 // Move |scoped_event_signal_b| to |scoped_event_signal_c| because the | |
| 66 // assignment operator cannot be used on a ScopedEventSignal which is | |
| 67 // already associated with an event. | |
| 68 ScopedEventSignal scoped_event_signal_c(std::move(scoped_event_signal_b)); | |
| 69 | |
| 70 scoped_event_signal_b = std::move(scoped_event_signal_a); | |
| 71 EXPECT_FALSE(event.IsSignaled()); | |
| 72 } | |
| 73 | |
| 74 // |event| is signaled when |scoped_event_signal_b| is destroyed. | |
| 75 EXPECT_TRUE(event.IsSignaled()); | |
| 76 | |
| 77 event.Reset(); | |
| 78 } | |
| 79 | |
| 80 // |event| is not signaled when |scoped_signal_event_a| is destroyed. | |
| 81 EXPECT_FALSE(event.IsSignaled()); | |
| 82 } | |
| 83 | |
| 84 } // namespace syncer | |
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Chromium Code Reviews
Issue 2848903002:
[merge m59] [Sync] Refactor ModelSafeWorker::DoWorkAndWaitUntilDone() to avoid code duplication. (Closed)
