content/browser/device_sensors/device_sensor_browsertest.cc - chromium/src - Git at Google

 // Copyright 2014 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/command_line.h"
 #include "base/macros.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/platform_thread.h"
 #include "build/build_config.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/content_browser_test.h"
 #include "content/public/test/content_browser_test_utils.h"
 #include "content/public/test/test_navigation_observer.h"
 #include "content/public/test/test_utils.h"
 #include "content/shell/browser/shell.h"
 #include "content/shell/browser/shell_javascript_dialog_manager.h"
 #include "device/sensors/data_fetcher_shared_memory.h"
 #include "device/sensors/device_sensor_service.h"
 #include "device/sensors/public/cpp/device_light_hardware_buffer.h"
 #include "device/sensors/public/cpp/device_motion_hardware_buffer.h"
 #include "device/sensors/public/cpp/device_orientation_hardware_buffer.h"

 namespace content {

 namespace {

 class FakeDataFetcher : public device::DataFetcherSharedMemory {
  public:
   FakeDataFetcher() : sensor_data_available_(true) {}
   ~FakeDataFetcher() override {}

   void SetMotionStartedCallback(base::Closure motion_started_callback) {
     motion_started_callback_ = motion_started_callback;
   }

   void SetMotionStoppedCallback(base::Closure motion_stopped_callback) {
     motion_stopped_callback_ = motion_stopped_callback;
   }

   void SetLightStartedCallback(base::Closure light_started_callback) {
     light_started_callback_ = light_started_callback;
   }

   void SetLightStoppedCallback(base::Closure light_stopped_callback) {
     light_stopped_callback_ = light_stopped_callback;
   }

   void SetOrientationStartedCallback(
       base::Closure orientation_started_callback) {
     orientation_started_callback_ = orientation_started_callback;
   }

   void SetOrientationStoppedCallback(
       base::Closure orientation_stopped_callback) {
     orientation_stopped_callback_ = orientation_stopped_callback;
   }

   bool Start(device::ConsumerType consumer_type, void* buffer) override {
     EXPECT_TRUE(buffer);

     switch (consumer_type) {
       case device::CONSUMER_TYPE_MOTION: {
         device::DeviceMotionHardwareBuffer* motion_buffer =
             static_cast<device::DeviceMotionHardwareBuffer*>(buffer);
         if (sensor_data_available_)
           UpdateMotion(motion_buffer);
         SetMotionBufferReady(motion_buffer);
         BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                                 motion_started_callback_);
       } break;
       case device::CONSUMER_TYPE_ORIENTATION: {
         device::DeviceOrientationHardwareBuffer* orientation_buffer =
             static_cast<device::DeviceOrientationHardwareBuffer*>(buffer);
         if (sensor_data_available_)
           UpdateOrientation(orientation_buffer);
         SetOrientationBufferReady(orientation_buffer);
         BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                                 orientation_started_callback_);
       } break;
       case device::CONSUMER_TYPE_LIGHT: {
         device::DeviceLightHardwareBuffer* light_buffer =
             static_cast<device::DeviceLightHardwareBuffer*>(buffer);
         UpdateLight(light_buffer,
                     sensor_data_available_
                         ? 100
                         : std::numeric_limits<double>::infinity());
         BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                                 light_started_callback_);
       } break;
       default:
         return false;
     }
     return true;
   }

   bool Stop(device::ConsumerType consumer_type) override {
     switch (consumer_type) {
       case device::CONSUMER_TYPE_MOTION:
         BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                                 motion_stopped_callback_);
         break;
       case device::CONSUMER_TYPE_ORIENTATION:
         BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                                 orientation_stopped_callback_);
         break;
       case device::CONSUMER_TYPE_LIGHT:
         BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                                 light_stopped_callback_);
         break;
       default:
         return false;
     }
     return true;
   }

   void Fetch(unsigned consumer_bitmask) override {
     FAIL() << "fetch should not be called";
   }

   FetcherType GetType() const override { return FETCHER_TYPE_DEFAULT; }

   void SetSensorDataAvailable(bool available) {
     sensor_data_available_ = available;
   }

   void SetMotionBufferReady(device::DeviceMotionHardwareBuffer* buffer) {
     buffer->seqlock.WriteBegin();
     buffer->data.allAvailableSensorsAreActive = true;
     buffer->seqlock.WriteEnd();
   }

   void SetOrientationBufferReady(
       device::DeviceOrientationHardwareBuffer* buffer) {
     buffer->seqlock.WriteBegin();
     buffer->data.allAvailableSensorsAreActive = true;
     buffer->seqlock.WriteEnd();
   }

   void UpdateMotion(device::DeviceMotionHardwareBuffer* buffer) {
     buffer->seqlock.WriteBegin();
     buffer->data.accelerationX = 1;
     buffer->data.hasAccelerationX = true;
     buffer->data.accelerationY = 2;
     buffer->data.hasAccelerationY = true;
     buffer->data.accelerationZ = 3;
     buffer->data.hasAccelerationZ = true;

     buffer->data.accelerationIncludingGravityX = 4;
     buffer->data.hasAccelerationIncludingGravityX = true;
     buffer->data.accelerationIncludingGravityY = 5;
     buffer->data.hasAccelerationIncludingGravityY = true;
     buffer->data.accelerationIncludingGravityZ = 6;
     buffer->data.hasAccelerationIncludingGravityZ = true;

     buffer->data.rotationRateAlpha = 7;
     buffer->data.hasRotationRateAlpha = true;
     buffer->data.rotationRateBeta = 8;
     buffer->data.hasRotationRateBeta = true;
     buffer->data.rotationRateGamma = 9;
     buffer->data.hasRotationRateGamma = true;

     buffer->data.interval = 100;
     buffer->data.allAvailableSensorsAreActive = true;
     buffer->seqlock.WriteEnd();
   }

   void UpdateOrientation(device::DeviceOrientationHardwareBuffer* buffer) {
     buffer->seqlock.WriteBegin();
     buffer->data.alpha = 1;
     buffer->data.hasAlpha = true;
     buffer->data.beta = 2;
     buffer->data.hasBeta = true;
     buffer->data.gamma = 3;
     buffer->data.hasGamma = true;
     buffer->data.allAvailableSensorsAreActive = true;
     buffer->seqlock.WriteEnd();
   }

   void UpdateLight(device::DeviceLightHardwareBuffer* buffer, double lux) {
     buffer->seqlock.WriteBegin();
     buffer->data.value = lux;
     buffer->seqlock.WriteEnd();
   }

   // The below callbacks should be run on the UI thread.
   base::Closure motion_started_callback_;
   base::Closure orientation_started_callback_;
   base::Closure light_started_callback_;
   base::Closure motion_stopped_callback_;
   base::Closure orientation_stopped_callback_;
   base::Closure light_stopped_callback_;
   bool sensor_data_available_;

  private:
   DISALLOW_COPY_AND_ASSIGN(FakeDataFetcher);
 };

 class DeviceSensorBrowserTest : public ContentBrowserTest {
  public:
   DeviceSensorBrowserTest()
       : fetcher_(nullptr),
         io_loop_finished_event_(
             base::WaitableEvent::ResetPolicy::AUTOMATIC,
             base::WaitableEvent::InitialState::NOT_SIGNALED) {}

   void SetUpOnMainThread() override {
     // Initialize the RunLoops now that the main thread has been created.
     light_started_runloop_.reset(new base::RunLoop());
     light_stopped_runloop_.reset(new base::RunLoop());
     motion_started_runloop_.reset(new base::RunLoop());
     motion_stopped_runloop_.reset(new base::RunLoop());
     orientation_started_runloop_.reset(new base::RunLoop());
     orientation_stopped_runloop_.reset(new base::RunLoop());
 #if defined(OS_ANDROID)
     // On Android, the DeviceSensorService lives on the UI thread.
     SetUpFetcher();
 #else
     // On all other platforms, the DeviceSensorService lives on the IO thread.
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
         base::Bind(&DeviceSensorBrowserTest::SetUpOnIOThread,
                    base::Unretained(this)));
     io_loop_finished_event_.Wait();
 #endif
   }

   void SetUpFetcher() {
     fetcher_ = new FakeDataFetcher();
     fetcher_->SetLightStartedCallback(light_started_runloop_->QuitClosure());
     fetcher_->SetLightStoppedCallback(light_stopped_runloop_->QuitClosure());
     fetcher_->SetMotionStartedCallback(motion_started_runloop_->QuitClosure());
     fetcher_->SetMotionStoppedCallback(motion_stopped_runloop_->QuitClosure());
     fetcher_->SetOrientationStartedCallback(
         orientation_started_runloop_->QuitClosure());
     fetcher_->SetOrientationStoppedCallback(
         orientation_stopped_runloop_->QuitClosure());
     device::DeviceSensorService::GetInstance()->SetDataFetcherForTesting(
         fetcher_);
   }

   void SetUpOnIOThread() {
     SetUpFetcher();
     io_loop_finished_event_.Signal();
   }

   void DelayAndQuit(base::TimeDelta delay) {
     base::PlatformThread::Sleep(delay);
     base::MessageLoop::current()->QuitWhenIdle();
   }

   void WaitForAlertDialogAndQuitAfterDelay(base::TimeDelta delay) {
     ShellJavaScriptDialogManager* dialog_manager =
         static_cast<ShellJavaScriptDialogManager*>(
             shell()->GetJavaScriptDialogManager(shell()->web_contents()));

     scoped_refptr<MessageLoopRunner> runner = new MessageLoopRunner();
     dialog_manager->set_dialog_request_callback(
         base::Bind(&DeviceSensorBrowserTest::DelayAndQuit,
                    base::Unretained(this), delay));
     runner->Run();
   }

   void EnableExperimentalFeatures() {
     // TODO(riju): remove when the DeviceLight feature goes stable.
     base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
     if (!cmd_line->HasSwitch(switches::kEnableExperimentalWebPlatformFeatures))
       cmd_line->AppendSwitch(switches::kEnableExperimentalWebPlatformFeatures);
   }

   FakeDataFetcher* fetcher_;

   // NOTE: These can only be initialized once the main thread has been created
   // and so must be pointers instead of plain objects.
   std::unique_ptr<base::RunLoop> light_started_runloop_;
   std::unique_ptr<base::RunLoop> light_stopped_runloop_;
   std::unique_ptr<base::RunLoop> motion_started_runloop_;
   std::unique_ptr<base::RunLoop> motion_stopped_runloop_;
   std::unique_ptr<base::RunLoop> orientation_started_runloop_;
   std::unique_ptr<base::RunLoop> orientation_stopped_runloop_;

  private:
   base::WaitableEvent io_loop_finished_event_;
 };

 IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, OrientationTest) {
   // The test page will register an event handler for orientation events,
   // expects to get an event with fake values, then removes the event
   // handler and navigates to #pass.
   GURL test_url = GetTestUrl("device_sensors", "device_orientation_test.html");
   NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

   EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
   orientation_started_runloop_->Run();
   orientation_stopped_runloop_->Run();
 }

 IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, LightTest) {
   // The test page will register an event handler for light events,
   // expects to get an event with fake values, then removes the event
   // handler and navigates to #pass.
   EnableExperimentalFeatures();
   GURL test_url = GetTestUrl("device_sensors", "device_light_test.html");
   NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

   EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
   light_started_runloop_->Run();
   light_stopped_runloop_->Run();
 }

 IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, MotionTest) {
   // The test page will register an event handler for motion events,
   // expects to get an event with fake values, then removes the event
   // handler and navigates to #pass.
   GURL test_url = GetTestUrl("device_sensors", "device_motion_test.html");
   NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

   EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
   motion_started_runloop_->Run();
   motion_stopped_runloop_->Run();
 }

 IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, LightOneOffInfintyTest) {
   // The test page registers an event handler for light events and expects
   // to get an event with value equal to infinity, because no sensor data can
   // be provided.
   EnableExperimentalFeatures();
   fetcher_->SetSensorDataAvailable(false);
   GURL test_url =
       GetTestUrl("device_sensors", "device_light_infinity_test.html");
   NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

   EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
   light_started_runloop_->Run();
   light_stopped_runloop_->Run();
 }

 IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, OrientationNullTest) {
   // The test page registers an event handler for orientation events and
   // expects to get an event with null values, because no sensor data can be
   // provided.
   fetcher_->SetSensorDataAvailable(false);
   GURL test_url =
       GetTestUrl("device_sensors", "device_orientation_null_test.html");
   NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

   EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
   orientation_started_runloop_->Run();
   orientation_stopped_runloop_->Run();
 }

 IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, MotionNullTest) {
   // The test page registers an event handler for motion events and
   // expects to get an event with null values, because no sensor data can be
   // provided.
   fetcher_->SetSensorDataAvailable(false);
   GURL test_url = GetTestUrl("device_sensors", "device_motion_null_test.html");
   NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

   EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
   motion_started_runloop_->Run();
   motion_stopped_runloop_->Run();
 }

 IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, NullTestWithAlert) {
   // The test page registers an event handlers for motion/orientation events and
   // expects to get events with null values. The test raises a modal alert
   // dialog with a delay to test that the one-off null-events still propagate to
   // window after the alert is dismissed and the callbacks are invoked which
   // eventually navigate to #pass.
   fetcher_->SetSensorDataAvailable(false);
   TestNavigationObserver same_tab_observer(shell()->web_contents(), 2);

   GURL test_url =
       GetTestUrl("device_sensors", "device_sensors_null_test_with_alert.html");
   shell()->LoadURL(test_url);

   // TODO(timvolodine): investigate if it is possible to test this without
   // delay, crbug.com/360044.
   WaitForAlertDialogAndQuitAfterDelay(base::TimeDelta::FromMilliseconds(500));

   motion_started_runloop_->Run();
   motion_stopped_runloop_->Run();
   orientation_started_runloop_->Run();
   orientation_stopped_runloop_->Run();
   same_tab_observer.Wait();
   EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
 }

 }  //  namespace

 }  //  namespace content
	// Copyright 2014 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/command_line.h"
	#include "base/macros.h"
	#include "base/synchronization/waitable_event.h"
	#include "base/threading/platform_thread.h"
	#include "build/build_config.h"
	#include "content/public/browser/browser_thread.h"
	#include "content/public/browser/web_contents.h"
	#include "content/public/common/content_switches.h"
	#include "content/public/test/content_browser_test.h"
	#include "content/public/test/content_browser_test_utils.h"
	#include "content/public/test/test_navigation_observer.h"
	#include "content/public/test/test_utils.h"
	#include "content/shell/browser/shell.h"
	#include "content/shell/browser/shell_javascript_dialog_manager.h"
	#include "device/sensors/data_fetcher_shared_memory.h"
	#include "device/sensors/device_sensor_service.h"
	#include "device/sensors/public/cpp/device_light_hardware_buffer.h"
	#include "device/sensors/public/cpp/device_motion_hardware_buffer.h"
	#include "device/sensors/public/cpp/device_orientation_hardware_buffer.h"

	namespace content {

	namespace {

	class FakeDataFetcher : public device::DataFetcherSharedMemory {
	public:
	FakeDataFetcher() : sensor_data_available_(true) {}
	~FakeDataFetcher() override {}

	void SetMotionStartedCallback(base::Closure motion_started_callback) {
	motion_started_callback_ = motion_started_callback;
	}

	void SetMotionStoppedCallback(base::Closure motion_stopped_callback) {
	motion_stopped_callback_ = motion_stopped_callback;
	}

	void SetLightStartedCallback(base::Closure light_started_callback) {
	light_started_callback_ = light_started_callback;
	}

	void SetLightStoppedCallback(base::Closure light_stopped_callback) {
	light_stopped_callback_ = light_stopped_callback;
	}

	void SetOrientationStartedCallback(
	base::Closure orientation_started_callback) {
	orientation_started_callback_ = orientation_started_callback;
	}

	void SetOrientationStoppedCallback(
	base::Closure orientation_stopped_callback) {
	orientation_stopped_callback_ = orientation_stopped_callback;
	}

	bool Start(device::ConsumerType consumer_type, void* buffer) override {
	EXPECT_TRUE(buffer);

	switch (consumer_type) {
	case device::CONSUMER_TYPE_MOTION: {
	device::DeviceMotionHardwareBuffer* motion_buffer =
	static_cast<device::DeviceMotionHardwareBuffer*>(buffer);
	if (sensor_data_available_)
	UpdateMotion(motion_buffer);
	SetMotionBufferReady(motion_buffer);
	BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
	motion_started_callback_);
	} break;
	case device::CONSUMER_TYPE_ORIENTATION: {
	device::DeviceOrientationHardwareBuffer* orientation_buffer =
	static_cast<device::DeviceOrientationHardwareBuffer*>(buffer);
	if (sensor_data_available_)
	UpdateOrientation(orientation_buffer);
	SetOrientationBufferReady(orientation_buffer);
	BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
	orientation_started_callback_);
	} break;
	case device::CONSUMER_TYPE_LIGHT: {
	device::DeviceLightHardwareBuffer* light_buffer =
	static_cast<device::DeviceLightHardwareBuffer*>(buffer);
	UpdateLight(light_buffer,
	sensor_data_available_
	? 100
	: std::numeric_limits<double>::infinity());
	BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
	light_started_callback_);
	} break;
	default:
	return false;
	}
	return true;
	}

	bool Stop(device::ConsumerType consumer_type) override {
	switch (consumer_type) {
	case device::CONSUMER_TYPE_MOTION:
	BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
	motion_stopped_callback_);
	break;
	case device::CONSUMER_TYPE_ORIENTATION:
	BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
	orientation_stopped_callback_);
	break;
	case device::CONSUMER_TYPE_LIGHT:
	BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
	light_stopped_callback_);
	break;
	default:
	return false;
	}
	return true;
	}

	void Fetch(unsigned consumer_bitmask) override {
	FAIL() << "fetch should not be called";
	}

	FetcherType GetType() const override { return FETCHER_TYPE_DEFAULT; }

	void SetSensorDataAvailable(bool available) {
	sensor_data_available_ = available;
	}

	void SetMotionBufferReady(device::DeviceMotionHardwareBuffer* buffer) {
	buffer->seqlock.WriteBegin();
	buffer->data.allAvailableSensorsAreActive = true;
	buffer->seqlock.WriteEnd();
	}

	void SetOrientationBufferReady(
	device::DeviceOrientationHardwareBuffer* buffer) {
	buffer->seqlock.WriteBegin();
	buffer->data.allAvailableSensorsAreActive = true;
	buffer->seqlock.WriteEnd();
	}

	void UpdateMotion(device::DeviceMotionHardwareBuffer* buffer) {
	buffer->seqlock.WriteBegin();
	buffer->data.accelerationX = 1;
	buffer->data.hasAccelerationX = true;
	buffer->data.accelerationY = 2;
	buffer->data.hasAccelerationY = true;
	buffer->data.accelerationZ = 3;
	buffer->data.hasAccelerationZ = true;

	buffer->data.accelerationIncludingGravityX = 4;
	buffer->data.hasAccelerationIncludingGravityX = true;
	buffer->data.accelerationIncludingGravityY = 5;
	buffer->data.hasAccelerationIncludingGravityY = true;
	buffer->data.accelerationIncludingGravityZ = 6;
	buffer->data.hasAccelerationIncludingGravityZ = true;

	buffer->data.rotationRateAlpha = 7;
	buffer->data.hasRotationRateAlpha = true;
	buffer->data.rotationRateBeta = 8;
	buffer->data.hasRotationRateBeta = true;
	buffer->data.rotationRateGamma = 9;
	buffer->data.hasRotationRateGamma = true;

	buffer->data.interval = 100;
	buffer->data.allAvailableSensorsAreActive = true;
	buffer->seqlock.WriteEnd();
	}

	void UpdateOrientation(device::DeviceOrientationHardwareBuffer* buffer) {
	buffer->seqlock.WriteBegin();
	buffer->data.alpha = 1;
	buffer->data.hasAlpha = true;
	buffer->data.beta = 2;
	buffer->data.hasBeta = true;
	buffer->data.gamma = 3;
	buffer->data.hasGamma = true;
	buffer->data.allAvailableSensorsAreActive = true;
	buffer->seqlock.WriteEnd();
	}

	void UpdateLight(device::DeviceLightHardwareBuffer* buffer, double lux) {
	buffer->seqlock.WriteBegin();
	buffer->data.value = lux;
	buffer->seqlock.WriteEnd();
	}

	// The below callbacks should be run on the UI thread.
	base::Closure motion_started_callback_;
	base::Closure orientation_started_callback_;
	base::Closure light_started_callback_;
	base::Closure motion_stopped_callback_;
	base::Closure orientation_stopped_callback_;
	base::Closure light_stopped_callback_;
	bool sensor_data_available_;

	private:
	DISALLOW_COPY_AND_ASSIGN(FakeDataFetcher);
	};

	class DeviceSensorBrowserTest : public ContentBrowserTest {
	public:
	DeviceSensorBrowserTest()
	: fetcher_(nullptr),
	io_loop_finished_event_(
	base::WaitableEvent::ResetPolicy::AUTOMATIC,
	base::WaitableEvent::InitialState::NOT_SIGNALED) {}

	void SetUpOnMainThread() override {
	// Initialize the RunLoops now that the main thread has been created.
	light_started_runloop_.reset(new base::RunLoop());
	light_stopped_runloop_.reset(new base::RunLoop());
	motion_started_runloop_.reset(new base::RunLoop());
	motion_stopped_runloop_.reset(new base::RunLoop());
	orientation_started_runloop_.reset(new base::RunLoop());
	orientation_stopped_runloop_.reset(new base::RunLoop());
	#if defined(OS_ANDROID)
	// On Android, the DeviceSensorService lives on the UI thread.
	SetUpFetcher();
	#else
	// On all other platforms, the DeviceSensorService lives on the IO thread.
	BrowserThread::PostTask(
	BrowserThread::IO, FROM_HERE,
	base::Bind(&DeviceSensorBrowserTest::SetUpOnIOThread,
	base::Unretained(this)));
	io_loop_finished_event_.Wait();
	#endif
	}

	void SetUpFetcher() {
	fetcher_ = new FakeDataFetcher();
	fetcher_->SetLightStartedCallback(light_started_runloop_->QuitClosure());
	fetcher_->SetLightStoppedCallback(light_stopped_runloop_->QuitClosure());
	fetcher_->SetMotionStartedCallback(motion_started_runloop_->QuitClosure());
	fetcher_->SetMotionStoppedCallback(motion_stopped_runloop_->QuitClosure());
	fetcher_->SetOrientationStartedCallback(
	orientation_started_runloop_->QuitClosure());
	fetcher_->SetOrientationStoppedCallback(
	orientation_stopped_runloop_->QuitClosure());
	device::DeviceSensorService::GetInstance()->SetDataFetcherForTesting(
	fetcher_);
	}

	void SetUpOnIOThread() {
	SetUpFetcher();
	io_loop_finished_event_.Signal();
	}

	void DelayAndQuit(base::TimeDelta delay) {
	base::PlatformThread::Sleep(delay);
	base::MessageLoop::current()->QuitWhenIdle();
	}

	void WaitForAlertDialogAndQuitAfterDelay(base::TimeDelta delay) {
	ShellJavaScriptDialogManager* dialog_manager =
	static_cast<ShellJavaScriptDialogManager*>(
	shell()->GetJavaScriptDialogManager(shell()->web_contents()));

	scoped_refptr<MessageLoopRunner> runner = new MessageLoopRunner();
	dialog_manager->set_dialog_request_callback(
	base::Bind(&DeviceSensorBrowserTest::DelayAndQuit,
	base::Unretained(this), delay));
	runner->Run();
	}

	void EnableExperimentalFeatures() {
	// TODO(riju): remove when the DeviceLight feature goes stable.
	base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
	if (!cmd_line->HasSwitch(switches::kEnableExperimentalWebPlatformFeatures))
	cmd_line->AppendSwitch(switches::kEnableExperimentalWebPlatformFeatures);
	}

	FakeDataFetcher* fetcher_;

	// NOTE: These can only be initialized once the main thread has been created
	// and so must be pointers instead of plain objects.
	std::unique_ptr<base::RunLoop> light_started_runloop_;
	std::unique_ptr<base::RunLoop> light_stopped_runloop_;
	std::unique_ptr<base::RunLoop> motion_started_runloop_;
	std::unique_ptr<base::RunLoop> motion_stopped_runloop_;
	std::unique_ptr<base::RunLoop> orientation_started_runloop_;
	std::unique_ptr<base::RunLoop> orientation_stopped_runloop_;

	private:
	base::WaitableEvent io_loop_finished_event_;
	};

	IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, OrientationTest) {
	// The test page will register an event handler for orientation events,
	// expects to get an event with fake values, then removes the event
	// handler and navigates to #pass.
	GURL test_url = GetTestUrl("device_sensors", "device_orientation_test.html");
	NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

	EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
	orientation_started_runloop_->Run();
	orientation_stopped_runloop_->Run();
	}

	IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, LightTest) {
	// The test page will register an event handler for light events,
	// expects to get an event with fake values, then removes the event
	// handler and navigates to #pass.
	EnableExperimentalFeatures();
	GURL test_url = GetTestUrl("device_sensors", "device_light_test.html");
	NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

	EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
	light_started_runloop_->Run();
	light_stopped_runloop_->Run();
	}

	IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, MotionTest) {
	// The test page will register an event handler for motion events,
	// expects to get an event with fake values, then removes the event
	// handler and navigates to #pass.
	GURL test_url = GetTestUrl("device_sensors", "device_motion_test.html");
	NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

	EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
	motion_started_runloop_->Run();
	motion_stopped_runloop_->Run();
	}

	IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, LightOneOffInfintyTest) {
	// The test page registers an event handler for light events and expects
	// to get an event with value equal to infinity, because no sensor data can
	// be provided.
	EnableExperimentalFeatures();
	fetcher_->SetSensorDataAvailable(false);
	GURL test_url =
	GetTestUrl("device_sensors", "device_light_infinity_test.html");
	NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

	EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
	light_started_runloop_->Run();
	light_stopped_runloop_->Run();
	}

	IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, OrientationNullTest) {
	// The test page registers an event handler for orientation events and
	// expects to get an event with null values, because no sensor data can be
	// provided.
	fetcher_->SetSensorDataAvailable(false);
	GURL test_url =
	GetTestUrl("device_sensors", "device_orientation_null_test.html");
	NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

	EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
	orientation_started_runloop_->Run();
	orientation_stopped_runloop_->Run();
	}

	IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, MotionNullTest) {
	// The test page registers an event handler for motion events and
	// expects to get an event with null values, because no sensor data can be
	// provided.
	fetcher_->SetSensorDataAvailable(false);
	GURL test_url = GetTestUrl("device_sensors", "device_motion_null_test.html");
	NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);

	EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
	motion_started_runloop_->Run();
	motion_stopped_runloop_->Run();
	}

	IN_PROC_BROWSER_TEST_F(DeviceSensorBrowserTest, NullTestWithAlert) {
	// The test page registers an event handlers for motion/orientation events and
	// expects to get events with null values. The test raises a modal alert
	// dialog with a delay to test that the one-off null-events still propagate to
	// window after the alert is dismissed and the callbacks are invoked which
	// eventually navigate to #pass.
	fetcher_->SetSensorDataAvailable(false);
	TestNavigationObserver same_tab_observer(shell()->web_contents(), 2);

	GURL test_url =
	GetTestUrl("device_sensors", "device_sensors_null_test_with_alert.html");
	shell()->LoadURL(test_url);

	// TODO(timvolodine): investigate if it is possible to test this without
	// delay, crbug.com/360044.
	WaitForAlertDialogAndQuitAfterDelay(base::TimeDelta::FromMilliseconds(500));

	motion_started_runloop_->Run();
	motion_stopped_runloop_->Run();
	orientation_started_runloop_->Run();
	orientation_stopped_runloop_->Run();
	same_tab_observer.Wait();
	EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
	}

	} // namespace

	} // namespace content