blob: 07651ce27444d6e868b0c28887e3374ed8d63d47 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/hi_res_timer_manager.h"
#include "base/memory/scoped_ptr.h"
#include "base/system_monitor/system_monitor.h"
#include "base/time.h"
#include "testing/gtest/include/gtest/gtest.h"
#if defined(OS_WIN)
// http://crbug.com/114048
TEST(HiResTimerManagerTest, DISABLED_ToggleOnOff) {
MessageLoop loop;
scoped_ptr<base::SystemMonitor> system_monitor(new base::SystemMonitor());
HighResolutionTimerManager manager;
// At this point, we don't know if the high resolution timers are on or off,
// it depends on what system the tests are running on (for example, if this
// test is running on a laptop/battery, then the SystemMonitor would have
// already set the PowerState to battery power; but if we're running on a
// desktop, then the PowerState will be non-battery power). Simulate a power
// level change to get to a deterministic state.
manager.OnPowerStateChange(/* on_battery */ false);
// Loop a few times to test power toggling.
for (int loop = 2; loop >= 0; --loop) {
// The manager has the high resolution clock enabled now.
EXPECT_TRUE(manager.hi_res_clock_available());
// But the Time class has it off, because it hasn't been activated.
EXPECT_FALSE(base::Time::IsHighResolutionTimerInUse());
// Activate the high resolution timer.
base::Time::ActivateHighResolutionTimer(true);
EXPECT_TRUE(base::Time::IsHighResolutionTimerInUse());
// Simulate a on-battery power event.
manager.OnPowerStateChange(/* on_battery */ true);
EXPECT_FALSE(manager.hi_res_clock_available());
EXPECT_FALSE(base::Time::IsHighResolutionTimerInUse());
// Simulate a off-battery power event.
manager.OnPowerStateChange(/* on_battery */ false);
EXPECT_TRUE(manager.hi_res_clock_available());
EXPECT_TRUE(base::Time::IsHighResolutionTimerInUse());
// De-activate the high resolution timer.
base::Time::ActivateHighResolutionTimer(false);
}
}
#endif // defined(OS_WIN)