1252dad25c
Not sure how I missed this! Review URL: http://codereview.chromium.org/9250 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@4457 0039d316-1c4b-4281-b951-d872f2087c98
80 lines
2.8 KiB
C++
80 lines
2.8 KiB
C++
// Copyright (c) 2008 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/system_monitor.h"
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#include "testing/gtest/include/gtest/gtest.h"
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class PowerTest : public base::SystemMonitor::PowerObserver {
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public:
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PowerTest()
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: battery_(false),
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power_state_changes_(0),
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suspends_(0),
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resumes_(0) {};
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// PowerObserver callbacks.
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void OnPowerStateChange(base::SystemMonitor*) { power_state_changes_++; };
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void OnSuspend(base::SystemMonitor*) { suspends_++; };
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void OnResume(base::SystemMonitor*) { resumes_++; };
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// Test status counts.
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bool battery() { return battery_; }
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int power_state_changes() { return power_state_changes_; }
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int suspends() { return suspends_; }
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int resumes() { return resumes_; }
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private:
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bool battery_; // Do we currently think we're on battery power.
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int power_state_changes_; // Count of OnPowerStateChange notifications.
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int suspends_; // Count of OnSuspend notifications.
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int resumes_; // Count of OnResume notifications.
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};
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TEST(SystemMonitor, PowerNotifications) {
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const int kObservers = 5;
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// Initialize a message loop for this to run on.
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MessageLoop loop;
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// Initialize time() since it registers as a SystemMonitor observer.
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base::Time now = base::Time::Now();
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base::SystemMonitor* monitor = base::SystemMonitor::Get();
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PowerTest test[kObservers];
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for (int index = 0; index < kObservers; ++index)
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monitor->AddObserver(&test[index]);
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// Send a bunch of power changes. Since the battery power hasn't
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// actually changed, we shouldn't get notifications.
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for (int index = 0; index < 5; index++) {
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monitor->ProcessPowerMessage(base::SystemMonitor::POWER_STATE_EVENT);
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EXPECT_EQ(test[0].power_state_changes(), 0);
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}
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// Sending resume when not suspended should have no effect.
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monitor->ProcessPowerMessage(base::SystemMonitor::RESUME_EVENT);
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loop.RunAllPending();
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EXPECT_EQ(test[0].resumes(), 0);
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// Pretend we suspended.
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monitor->ProcessPowerMessage(base::SystemMonitor::SUSPEND_EVENT);
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loop.RunAllPending();
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EXPECT_EQ(test[0].suspends(), 1);
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// Send a second suspend notification. This should be suppressed.
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monitor->ProcessPowerMessage(base::SystemMonitor::SUSPEND_EVENT);
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loop.RunAllPending();
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EXPECT_EQ(test[0].suspends(), 1);
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// Pretend we were awakened.
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monitor->ProcessPowerMessage(base::SystemMonitor::RESUME_EVENT);
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loop.RunAllPending();
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EXPECT_EQ(test[0].resumes(), 1);
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// Send a duplicate resume notification. This should be suppressed.
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monitor->ProcessPowerMessage(base::SystemMonitor::RESUME_EVENT);
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loop.RunAllPending();
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EXPECT_EQ(test[0].resumes(), 1);
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}
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