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// Copyright 2013 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/macros.h"
#include "base/message_loop/message_loop.h"
#include "base/power_monitor/power_monitor.h"
#include "base/test/power_monitor_test_base.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
class PowerMonitorTest : public testing::Test {
protected:
PowerMonitorTest() {
power_monitor_source_ = new PowerMonitorTestSource();
power_monitor_.reset(new PowerMonitor(
std::unique_ptr<PowerMonitorSource>(power_monitor_source_)));
}
~PowerMonitorTest() override{};
PowerMonitorTestSource* source() { return power_monitor_source_; }
PowerMonitor* monitor() { return power_monitor_.get(); }
private:
base::MessageLoop message_loop_;
PowerMonitorTestSource* power_monitor_source_;
std::unique_ptr<PowerMonitor> power_monitor_;
DISALLOW_COPY_AND_ASSIGN(PowerMonitorTest);
};
// PowerMonitorSource is tightly coupled with the PowerMonitor, so this test
// Will cover both classes
TEST_F(PowerMonitorTest, PowerNotifications) {
const int kObservers = 5;
PowerMonitorTestObserver observers[kObservers];
for (int index = 0; index < kObservers; ++index)
monitor()->AddObserver(&observers[index]);
// Sending resume when not suspended should have no effect.
source()->GenerateResumeEvent();
EXPECT_EQ(observers[0].resumes(), 0);
// Pretend we suspended.
source()->GenerateSuspendEvent();
// Ensure all observers were notified of the event
for (int index = 0; index < kObservers; ++index)
EXPECT_EQ(observers[index].suspends(), 1);
// Send a second suspend notification. This should be suppressed.
source()->GenerateSuspendEvent();
EXPECT_EQ(observers[0].suspends(), 1);
// Pretend we were awakened.
source()->GenerateResumeEvent();
EXPECT_EQ(observers[0].resumes(), 1);
// Send a duplicate resume notification. This should be suppressed.
source()->GenerateResumeEvent();
EXPECT_EQ(observers[0].resumes(), 1);
// Pretend the device has gone on battery power
source()->GeneratePowerStateEvent(true);
EXPECT_EQ(observers[0].power_state_changes(), 1);
EXPECT_EQ(observers[0].last_power_state(), true);
// Repeated indications the device is on battery power should be suppressed.
source()->GeneratePowerStateEvent(true);
EXPECT_EQ(observers[0].power_state_changes(), 1);
// Pretend the device has gone off battery power
source()->GeneratePowerStateEvent(false);
EXPECT_EQ(observers[0].power_state_changes(), 2);
EXPECT_EQ(observers[0].last_power_state(), false);
// Repeated indications the device is off battery power should be suppressed.
source()->GeneratePowerStateEvent(false);
EXPECT_EQ(observers[0].power_state_changes(), 2);
}
} // namespace base
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