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 3 // found in the LICENSE file. 4 5 #include "base/timer/hi_res_timer_manager.h" 6 7 #include "base/memory/scoped_ptr.h" 8 #include "base/message_loop/message_loop.h" 9 #include "base/power_monitor/power_monitor.h" 10 #include "base/power_monitor/power_monitor_device_source.h" 11 #include "base/time/time.h" 12 #include "testing/gtest/include/gtest/gtest.h" 13 14 namespace base { 15 16 #if defined(OS_WIN) 17 // http://crbug.com/114048 18 TEST(HiResTimerManagerTest, DISABLED_ToggleOnOff) { 19 base::MessageLoop loop; 20 scoped_ptr<base::PowerMonitorSource> power_monitor_source( 21 new base::PowerMonitorDeviceSource()); 22 scoped_ptr<base::PowerMonitor> power_monitor( 23 new base::PowerMonitor(power_monitor_source.Pass())); 24 HighResolutionTimerManager manager; 25 26 // At this point, we don't know if the high resolution timers are on or off, 27 // it depends on what system the tests are running on (for example, if this 28 // test is running on a laptop/battery, then the PowerMonitor would have 29 // already set the PowerState to battery power; but if we're running on a 30 // desktop, then the PowerState will be non-battery power). Simulate a power 31 // level change to get to a deterministic state. 32 manager.OnPowerStateChange(/* on_battery */ false); 33 34 // Loop a few times to test power toggling. 35 for (int loop = 2; loop >= 0; --loop) { 36 // The manager has the high resolution clock enabled now. 37 EXPECT_TRUE(manager.hi_res_clock_available()); 38 // But the Time class has it off, because it hasn't been activated. 39 EXPECT_FALSE(base::Time::IsHighResolutionTimerInUse()); 40 41 // Activate the high resolution timer. 42 base::Time::ActivateHighResolutionTimer(true); 43 EXPECT_TRUE(base::Time::IsHighResolutionTimerInUse()); 44 45 // Simulate a on-battery power event. 46 manager.OnPowerStateChange(/* on_battery */ true); 47 EXPECT_FALSE(manager.hi_res_clock_available()); 48 EXPECT_FALSE(base::Time::IsHighResolutionTimerInUse()); 49 50 // Simulate a off-battery power event. 51 manager.OnPowerStateChange(/* on_battery */ false); 52 EXPECT_TRUE(manager.hi_res_clock_available()); 53 EXPECT_TRUE(base::Time::IsHighResolutionTimerInUse()); 54 55 // De-activate the high resolution timer. 56 base::Time::ActivateHighResolutionTimer(false); 57 } 58 } 59 #endif // defined(OS_WIN) 60 61 } // namespace base 62
