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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/power_monitor/power_monitor.h"
#include "base/message_loop/message_loop.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
class PowerTest : public PowerObserver {
public:
PowerTest()
: power_state_changes_(0),
suspends_(0),
resumes_(0) {
}
// PowerObserver callbacks.
virtual void OnPowerStateChange(bool on_battery_power) OVERRIDE {
power_state_changes_++;
}
virtual void OnSuspend() OVERRIDE {
suspends_++;
}
virtual void OnResume() OVERRIDE {
resumes_++;
}
// Test status counts.
int power_state_changes() { return power_state_changes_; }
int suspends() { return suspends_; }
int resumes() { return resumes_; }
private:
int power_state_changes_; // Count of OnPowerStateChange notifications.
int suspends_; // Count of OnSuspend notifications.
int resumes_; // Count of OnResume notifications.
};
class PowerMonitorTest : public testing::Test {
protected:
PowerMonitorTest() {
#if defined(OS_MACOSX)
// This needs to happen before PowerMonitor's ctor.
PowerMonitor::AllocateSystemIOPorts();
#endif
power_monitor_.reset(new PowerMonitor);
}
void ProcessPowerEvent(PowerMonitor::PowerEvent event_id) {
power_monitor_->ProcessPowerEvent(event_id);
}
virtual ~PowerMonitorTest() {}
MessageLoop message_loop_;
scoped_ptr<PowerMonitor> power_monitor_;
DISALLOW_COPY_AND_ASSIGN(PowerMonitorTest);
};
TEST_F(PowerMonitorTest, PowerNotifications) {
const int kObservers = 5;
PowerTest test[kObservers];
for (int index = 0; index < kObservers; ++index)
power_monitor_->AddObserver(&test[index]);
// Send a bunch of power changes. Since the battery power hasn't
// actually changed, we shouldn't get notifications.
for (int index = 0; index < 5; index++) {
ProcessPowerEvent(PowerMonitor::POWER_STATE_EVENT);
EXPECT_EQ(test[0].power_state_changes(), 0);
}
// Sending resume when not suspended should have no effect.
ProcessPowerEvent(PowerMonitor::RESUME_EVENT);
message_loop_.RunUntilIdle();
EXPECT_EQ(test[0].resumes(), 0);
// Pretend we suspended.
ProcessPowerEvent(PowerMonitor::SUSPEND_EVENT);
message_loop_.RunUntilIdle();
EXPECT_EQ(test[0].suspends(), 1);
// Send a second suspend notification. This should be suppressed.
ProcessPowerEvent(PowerMonitor::SUSPEND_EVENT);
message_loop_.RunUntilIdle();
EXPECT_EQ(test[0].suspends(), 1);
// Pretend we were awakened.
ProcessPowerEvent(PowerMonitor::RESUME_EVENT);
message_loop_.RunUntilIdle();
EXPECT_EQ(test[0].resumes(), 1);
// Send a duplicate resume notification. This should be suppressed.
ProcessPowerEvent(PowerMonitor::RESUME_EVENT);
message_loop_.RunUntilIdle();
EXPECT_EQ(test[0].resumes(), 1);
}
} // namespace base
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