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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/timer/hi_res_timer_manager.h" | 5 #include "base/timer/hi_res_timer_manager.h" |
6 | 6 |
7 #include "base/memory/scoped_ptr.h" | 7 #include "base/memory/scoped_ptr.h" |
8 #include "base/message_loop/message_loop.h" | 8 #include "base/message_loop/message_loop.h" |
9 #include "base/power_monitor/power_monitor.h" | 9 #include "base/power_monitor/power_monitor.h" |
10 #include "base/power_monitor/power_monitor_device_source.h" | 10 #include "base/power_monitor/power_monitor_device_source.h" |
11 #include "base/time/time.h" | 11 #include "base/time/time.h" |
12 #include "testing/gtest/include/gtest/gtest.h" | 12 #include "testing/gtest/include/gtest/gtest.h" |
13 | 13 |
14 namespace base { | 14 namespace base { |
15 | 15 |
16 #if defined(OS_WIN) | |
17 TEST(HiResTimerManagerTest, ToggleOnOff) { | 16 TEST(HiResTimerManagerTest, ToggleOnOff) { |
18 // The power monitor creates Window to receive power notifications from | |
19 // Windows, which makes this test flaky if you run while the machine | |
20 // goes in or out of AC power. | |
21 base::MessageLoop loop(base::MessageLoop::TYPE_UI); | |
22 scoped_ptr<base::PowerMonitorSource> power_monitor_source( | |
23 new base::PowerMonitorDeviceSource()); | |
24 scoped_ptr<base::PowerMonitor> power_monitor( | |
25 new base::PowerMonitor(power_monitor_source.Pass())); | |
26 | |
27 HighResolutionTimerManager manager; | |
28 // Simulate a on-AC power event to get to a known initial state. | |
29 manager.OnPowerStateChange(false); | |
30 | |
31 // Loop a few times to test power toggling. | |
32 for (int times = 0; times != 3; ++times) { | |
33 // The manager has the high resolution clock enabled now. | |
34 EXPECT_TRUE(manager.hi_res_clock_available()); | |
35 // But the Time class has it off, because it hasn't been activated. | |
36 EXPECT_FALSE(base::Time::IsHighResolutionTimerInUse()); | |
37 | |
38 // Activate the high resolution timer. | |
39 base::Time::ActivateHighResolutionTimer(true); | |
40 EXPECT_TRUE(base::Time::IsHighResolutionTimerInUse()); | |
41 | |
42 // Simulate a on-battery power event. | |
43 manager.OnPowerStateChange(true); | |
44 EXPECT_FALSE(manager.hi_res_clock_available()); | |
45 EXPECT_FALSE(base::Time::IsHighResolutionTimerInUse()); | |
46 | |
47 // Back to on-AC power. | |
48 manager.OnPowerStateChange(false); | |
49 EXPECT_TRUE(manager.hi_res_clock_available()); | |
50 EXPECT_TRUE(base::Time::IsHighResolutionTimerInUse()); | |
51 | |
52 // De-activate the high resolution timer. | |
53 base::Time::ActivateHighResolutionTimer(false); | |
54 } | |
55 } | 17 } |
56 #endif // defined(OS_WIN) | |
57 | 18 |
58 } // namespace base | 19 } // namespace base |
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