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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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