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// 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 "device_motion_event_pump.h"
#include <string.h>
#include "base/location.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/single_thread_task_runner.h"
#include "base/thread_task_runner_handle.h"
#include "content/common/device_sensors/device_motion_hardware_buffer.h"
#include "content/public/test/test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/WebKit/public/platform/modules/device_orientation/WebDeviceMotionListener.h"
namespace content {
class MockDeviceMotionListener : public blink::WebDeviceMotionListener {
public:
MockDeviceMotionListener()
: did_change_device_motion_(false), number_of_events_(0) {
memset(&data_, 0, sizeof(data_));
}
~MockDeviceMotionListener() override {}
void didChangeDeviceMotion(const blink::WebDeviceMotionData& data) override {
memcpy(&data_, &data, sizeof(data));
did_change_device_motion_ = true;
++number_of_events_;
}
bool did_change_device_motion() const {
return did_change_device_motion_;
}
int number_of_events() const { return number_of_events_; }
const blink::WebDeviceMotionData& data() const {
return data_;
}
private:
bool did_change_device_motion_;
int number_of_events_;
blink::WebDeviceMotionData data_;
DISALLOW_COPY_AND_ASSIGN(MockDeviceMotionListener);
};
class DeviceMotionEventPumpForTesting : public DeviceMotionEventPump {
public:
DeviceMotionEventPumpForTesting()
: DeviceMotionEventPump(0), stop_on_fire_event_(true) {}
~DeviceMotionEventPumpForTesting() override {}
void set_stop_on_fire_event(bool stop_on_fire_event) {
stop_on_fire_event_ = stop_on_fire_event;
}
bool stop_on_fire_event() { return stop_on_fire_event_; }
int pump_delay_microseconds() const { return pump_delay_microseconds_; }
void OnDidStart(base::SharedMemoryHandle renderer_handle) {
DeviceMotionEventPump::OnDidStart(renderer_handle);
}
void SendStartMessage() override {}
void SendStopMessage() override {}
void FireEvent() override {
DeviceMotionEventPump::FireEvent();
if (stop_on_fire_event_) {
Stop();
base::MessageLoop::current()->QuitWhenIdle();
}
}
private:
bool stop_on_fire_event_;
DISALLOW_COPY_AND_ASSIGN(DeviceMotionEventPumpForTesting);
};
class DeviceMotionEventPumpTest : public testing::Test {
public:
DeviceMotionEventPumpTest() {
EXPECT_TRUE(shared_memory_.CreateAndMapAnonymous(
sizeof(DeviceMotionHardwareBuffer)));
}
protected:
void SetUp() override {
const DeviceMotionHardwareBuffer* null_buffer = nullptr;
listener_.reset(new MockDeviceMotionListener);
motion_pump_.reset(new DeviceMotionEventPumpForTesting);
buffer_ = static_cast<DeviceMotionHardwareBuffer*>(shared_memory_.memory());
ASSERT_NE(null_buffer, buffer_);
memset(buffer_, 0, sizeof(DeviceMotionHardwareBuffer));
ASSERT_TRUE(shared_memory_.ShareToProcess(base::GetCurrentProcessHandle(),
&handle_));
}
void InitBuffer(bool allAvailableSensorsActive) {
blink::WebDeviceMotionData& data = buffer_->data;
data.accelerationX = 1;
data.hasAccelerationX = true;
data.accelerationY = 2;
data.hasAccelerationY = true;
data.accelerationZ = 3;
data.hasAccelerationZ = true;
data.allAvailableSensorsAreActive = allAvailableSensorsActive;
}
MockDeviceMotionListener* listener() { return listener_.get(); }
DeviceMotionEventPumpForTesting* motion_pump() { return motion_pump_.get(); }
base::SharedMemoryHandle handle() { return handle_; }
private:
scoped_ptr<MockDeviceMotionListener> listener_;
scoped_ptr<DeviceMotionEventPumpForTesting> motion_pump_;
base::SharedMemoryHandle handle_;
base::SharedMemory shared_memory_;
DeviceMotionHardwareBuffer* buffer_;
DISALLOW_COPY_AND_ASSIGN(DeviceMotionEventPumpTest);
};
TEST_F(DeviceMotionEventPumpTest, DidStartPolling) {
base::MessageLoopForUI loop;
InitBuffer(true);
motion_pump()->Start(listener());
motion_pump()->OnDidStart(handle());
base::MessageLoop::current()->Run();
const blink::WebDeviceMotionData& received_data = listener()->data();
EXPECT_TRUE(listener()->did_change_device_motion());
EXPECT_TRUE(received_data.hasAccelerationX);
EXPECT_EQ(1, static_cast<double>(received_data.accelerationX));
EXPECT_TRUE(received_data.hasAccelerationX);
EXPECT_EQ(2, static_cast<double>(received_data.accelerationY));
EXPECT_TRUE(received_data.hasAccelerationY);
EXPECT_EQ(3, static_cast<double>(received_data.accelerationZ));
EXPECT_TRUE(received_data.hasAccelerationZ);
EXPECT_FALSE(received_data.hasAccelerationIncludingGravityX);
EXPECT_FALSE(received_data.hasAccelerationIncludingGravityY);
EXPECT_FALSE(received_data.hasAccelerationIncludingGravityZ);
EXPECT_FALSE(received_data.hasRotationRateAlpha);
EXPECT_FALSE(received_data.hasRotationRateBeta);
EXPECT_FALSE(received_data.hasRotationRateGamma);
}
TEST_F(DeviceMotionEventPumpTest, DidStartPollingNotAllSensorsActive) {
base::MessageLoopForUI loop;
InitBuffer(false);
motion_pump()->Start(listener());
motion_pump()->OnDidStart(handle());
base::MessageLoop::current()->Run();
const blink::WebDeviceMotionData& received_data = listener()->data();
// No change in device motion because allAvailableSensorsAreActive is false.
EXPECT_FALSE(listener()->did_change_device_motion());
EXPECT_FALSE(received_data.hasAccelerationX);
EXPECT_FALSE(received_data.hasAccelerationX);
EXPECT_FALSE(received_data.hasAccelerationY);
EXPECT_FALSE(received_data.hasAccelerationZ);
EXPECT_FALSE(received_data.hasAccelerationIncludingGravityX);
EXPECT_FALSE(received_data.hasAccelerationIncludingGravityY);
EXPECT_FALSE(received_data.hasAccelerationIncludingGravityZ);
EXPECT_FALSE(received_data.hasRotationRateAlpha);
EXPECT_FALSE(received_data.hasRotationRateBeta);
EXPECT_FALSE(received_data.hasRotationRateGamma);
}
// Confirm that the frequency of pumping events is not greater than 60Hz. A rate
// above 60Hz would allow for the detection of keystrokes (crbug.com/421691)
TEST_F(DeviceMotionEventPumpTest, PumpThrottlesEventRate) {
// Confirm that the delay for pumping events is 60 Hz.
EXPECT_GE(60, base::Time::kMicrosecondsPerSecond /
motion_pump()->pump_delay_microseconds());
base::MessageLoopForUI loop;
InitBuffer(true);
motion_pump()->set_stop_on_fire_event(false);
motion_pump()->Start(listener());
motion_pump()->OnDidStart(handle());
base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
FROM_HERE, base::MessageLoop::QuitWhenIdleClosure(),
base::TimeDelta::FromMilliseconds(100));
base::MessageLoop::current()->Run();
motion_pump()->Stop();
// Check that the blink::WebDeviceMotionListener does not receive excess
// events.
EXPECT_TRUE(listener()->did_change_device_motion());
EXPECT_GE(6, listener()->number_of_events());
}
} // namespace content
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