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// Copyright (c) 2009 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 "app/system_monitor.h"
#include "testing/gtest/include/gtest/gtest.h"
class PowerTest : public SystemMonitor::PowerObserver {
public:
PowerTest()
: battery_(false),
power_state_changes_(0),
suspends_(0),
resumes_(0) {
}
// PowerObserver callbacks.
void OnPowerStateChange(bool on_battery_power) {
power_state_changes_++;
}
void OnSuspend() {
suspends_++;
}
void OnResume() {
resumes_++;
}
// Test status counts.
bool battery() { return battery_; }
int power_state_changes() { return power_state_changes_; }
int suspends() { return suspends_; }
int resumes() { return resumes_; }
private:
bool battery_; // Do we currently think we're on battery power.
int power_state_changes_; // Count of OnPowerStateChange notifications.
int suspends_; // Count of OnSuspend notifications.
int resumes_; // Count of OnResume notifications.
};
TEST(SystemMonitor, PowerNotifications) {
const int kObservers = 5;
// Initialize a message loop for this to run on.
MessageLoop loop;
// Initialize time() since it registers as a SystemMonitor observer.
base::Time now = base::Time::Now();
SystemMonitor system_monitor;
PowerTest test[kObservers];
for (int index = 0; index < kObservers; ++index)
system_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++) {
system_monitor.ProcessPowerMessage(SystemMonitor::POWER_STATE_EVENT);
EXPECT_EQ(test[0].power_state_changes(), 0);
}
// Sending resume when not suspended should have no effect.
system_monitor.ProcessPowerMessage(SystemMonitor::RESUME_EVENT);
loop.RunAllPending();
EXPECT_EQ(test[0].resumes(), 0);
// Pretend we suspended.
system_monitor.ProcessPowerMessage(SystemMonitor::SUSPEND_EVENT);
loop.RunAllPending();
EXPECT_EQ(test[0].suspends(), 1);
// Send a second suspend notification. This should be suppressed.
system_monitor.ProcessPowerMessage(SystemMonitor::SUSPEND_EVENT);
loop.RunAllPending();
EXPECT_EQ(test[0].suspends(), 1);
// Pretend we were awakened.
system_monitor.ProcessPowerMessage(SystemMonitor::RESUME_EVENT);
loop.RunAllPending();
EXPECT_EQ(test[0].resumes(), 1);
// Send a duplicate resume notification. This should be suppressed.
system_monitor.ProcessPowerMessage(SystemMonitor::RESUME_EVENT);
loop.RunAllPending();
EXPECT_EQ(test[0].resumes(), 1);
}
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