Reland: Refactor DeviceMotionEventPump to use //device/generic_sensor instead of //device/sensors

content/renderer/device_sensors/device_motion_event_pump_unittest.cc

 // 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 "content/renderer/device_sensors/device_motion_event_pump.h"
 
 #include <string.h>
 
 #include <memory>
 
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
+#include "base/time/time.h"
 #include "content/public/test/test_utils.h"
-#include "device/sensors/public/cpp/device_motion_hardware_buffer.h"
+#include "device/generic_sensor/public/cpp/sensor_reading.h"
+#include "device/generic_sensor/public/interfaces/sensor.mojom.h"
+#include "device/generic_sensor/public/interfaces/sensor_provider.mojom.h"
+#include "mojo/public/cpp/bindings/interface_request.h"
 #include "mojo/public/cpp/system/buffer.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/public/platform/modules/device_orientation/WebDeviceMotionData.h"
 #include "third_party/WebKit/public/platform/modules/device_orientation/WebDeviceMotionListener.h"
 
+namespace {
+
+constexpr uint64_t kReadingBufferSize =
+    sizeof(device::SensorReadingSharedBuffer);
+
+constexpr uint64_t kSharedBufferSizeInBytes =
+    kReadingBufferSize * static_cast<uint64_t>(device::mojom::SensorType::LAST);
+
+}  // namespace
+
 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 device::MotionData& data) 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 device::MotionData& data() const { return data_; }
+  const blink::WebDeviceMotionData& data() const { return data_; }
 
  private:
   bool did_change_device_motion_;
   int number_of_events_;
-  device::MotionData data_;
+  blink::WebDeviceMotionData data_;
 
   DISALLOW_COPY_AND_ASSIGN(MockDeviceMotionListener);
 };
 
 class DeviceMotionEventPumpForTesting : public DeviceMotionEventPump {
  public:
   DeviceMotionEventPumpForTesting()
-      : DeviceMotionEventPump(0), stop_on_fire_event_(true) {}
+      : DeviceMotionEventPump(nullptr), stop_on_fire_event_(true) {}
   ~DeviceMotionEventPumpForTesting() override {}
 
+  // DeviceMotionEventPump:
+  void SendStartMessage() override {
+    accelerometer_sensor_.mode = device::mojom::ReportingMode::CONTINUOUS;
+    linear_acceleration_sensor_.mode = device::mojom::ReportingMode::ON_CHANGE;
+    gyroscope_sensor_.mode = device::mojom::ReportingMode::CONTINUOUS;
+
+    shared_memory_ = mojo::SharedBufferHandle::Create(kSharedBufferSizeInBytes);
+
+    accelerometer_sensor_.shared_buffer = shared_memory_->MapAtOffset(
+        kReadingBufferSize, device::SensorReadingSharedBuffer::GetOffset(
+                                accelerometer_sensor_.type));
+    accelerometer_sensor_buffer_ =
+        static_cast<device::SensorReadingSharedBuffer*>(
+            accelerometer_sensor_.shared_buffer.get());
+
+    linear_acceleration_sensor_.shared_buffer = shared_memory_->MapAtOffset(
+        kReadingBufferSize, device::SensorReadingSharedBuffer::GetOffset(
+                                linear_acceleration_sensor_.type));
+    linear_acceleration_sensor_buffer_ =
+        static_cast<device::SensorReadingSharedBuffer*>(
+            linear_acceleration_sensor_.shared_buffer.get());
+
+    gyroscope_sensor_.shared_buffer = shared_memory_->MapAtOffset(
+        kReadingBufferSize,
+        device::SensorReadingSharedBuffer::GetOffset(gyroscope_sensor_.type));
+    gyroscope_sensor_buffer_ = static_cast<device::SensorReadingSharedBuffer*>(
+        gyroscope_sensor_.shared_buffer.get());
+  }
+
+  void StartFireEvent() { DeviceMotionEventPump::DidStart(); }
+
+  void SetAccelerometerSensorData(bool active,
+                                  double d0,
+                                  double d1,
+                                  double d2) {
+    if (active) {
+      mojo::MakeRequest(&accelerometer_sensor_.sensor);
+      accelerometer_sensor_buffer_->reading.timestamp =
+          (base::TimeTicks::Now() - base::TimeTicks()).InSecondsF();
+      accelerometer_sensor_buffer_->reading.values[0].value() = d0;
+      accelerometer_sensor_buffer_->reading.values[1].value() = d1;
+      accelerometer_sensor_buffer_->reading.values[2].value() = d2;
+    } else {
+      accelerometer_sensor_.sensor.reset();
+    }
+  }
+
+  void SetLinearAccelerationSensorData(bool active,
+                                       double d0,
+                                       double d1,
+                                       double d2) {
+    if (active) {
+      mojo::MakeRequest(&linear_acceleration_sensor_.sensor);
+      linear_acceleration_sensor_buffer_->reading.timestamp =
+          (base::TimeTicks::Now() - base::TimeTicks()).InSecondsF();
+      linear_acceleration_sensor_buffer_->reading.values[0].value() = d0;
+      linear_acceleration_sensor_buffer_->reading.values[1].value() = d1;
+      linear_acceleration_sensor_buffer_->reading.values[2].value() = d2;
+    } else {
+      linear_acceleration_sensor_.sensor.reset();
+    }
+  }
+
+  void SetGyroscopeSensorData(bool active, double d0, double d1, double d2) {
+    if (active) {
+      mojo::MakeRequest(&gyroscope_sensor_.sensor);
+      gyroscope_sensor_buffer_->reading.timestamp =
+          (base::TimeTicks::Now() - base::TimeTicks()).InSecondsF();
+      gyroscope_sensor_buffer_->reading.values[0].value() = d0;
+      gyroscope_sensor_buffer_->reading.values[1].value() = d1;
+      gyroscope_sensor_buffer_->reading.values[2].value() = d2;
+    } else {
+      gyroscope_sensor_.sensor.reset();
+    }
+  }
+
   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 DidStart(mojo::ScopedSharedBufferHandle renderer_handle) {
-    DeviceMotionEventPump::DidStart(std::move(renderer_handle));
-  }
-  void SendStartMessage() override {}
-  void SendStopMessage() override {}
+ protected:
+  // DeviceMotionEventPump:
   void FireEvent() override {
     DeviceMotionEventPump::FireEvent();
     if (stop_on_fire_event_) {
       Stop();
       base::MessageLoop::current()->QuitWhenIdle();
     }
   }
 
  private:
   bool stop_on_fire_event_;
+  mojo::ScopedSharedBufferHandle shared_memory_;
+  device::SensorReadingSharedBuffer* accelerometer_sensor_buffer_;
+  device::SensorReadingSharedBuffer* linear_acceleration_sensor_buffer_;
+  device::SensorReadingSharedBuffer* gyroscope_sensor_buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceMotionEventPumpForTesting);
 };
 
 class DeviceMotionEventPumpTest : public testing::Test {
  public:
   DeviceMotionEventPumpTest() = default;
 
  protected:
   void SetUp() override {
     listener_.reset(new MockDeviceMotionListener);
-    motion_pump_.reset(new DeviceMotionEventPumpForTesting);
-    shared_memory_ = mojo::SharedBufferHandle::Create(
-        sizeof(device::DeviceMotionHardwareBuffer));
-    mapping_ = shared_memory_->Map(sizeof(device::DeviceMotionHardwareBuffer));
-    ASSERT_TRUE(mapping_);
-    memset(buffer(), 0, sizeof(device::DeviceMotionHardwareBuffer));
-  }
-
-  void InitBuffer(bool allAvailableSensorsActive) {
-    device::MotionData& data = buffer()->data;
-    data.acceleration_x = 1;
-    data.has_acceleration_x = true;
-    data.acceleration_y = 2;
-    data.has_acceleration_y = true;
-    data.acceleration_z = 3;
-    data.has_acceleration_z = true;
-    data.all_available_sensors_are_active = allAvailableSensorsActive;
+    motion_pump_.reset(new DeviceMotionEventPumpForTesting());
   }
 
   MockDeviceMotionListener* listener() { return listener_.get(); }
   DeviceMotionEventPumpForTesting* motion_pump() { return motion_pump_.get(); }
-  mojo::ScopedSharedBufferHandle handle() {
-    return shared_memory_->Clone(
-        mojo::SharedBufferHandle::AccessMode::READ_ONLY);
-  }
-  device::DeviceMotionHardwareBuffer* buffer() {
-    return reinterpret_cast<device::DeviceMotionHardwareBuffer*>(
-        mapping_.get());
-  }
 
  private:
   base::MessageLoop loop_;
   std::unique_ptr<MockDeviceMotionListener> listener_;
   std::unique_ptr<DeviceMotionEventPumpForTesting> motion_pump_;
-  mojo::ScopedSharedBufferHandle shared_memory_;
-  mojo::ScopedSharedBufferMapping mapping_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceMotionEventPumpTest);
 };
 
-TEST_F(DeviceMotionEventPumpTest, DidStartPolling) {
-  InitBuffer(true);
-
+TEST_F(DeviceMotionEventPumpTest, AllSensorsAreActive) {
   motion_pump()->Start(listener());
-  motion_pump()->DidStart(handle());
+  motion_pump()->SetAccelerometerSensorData(true /* active */, 1, 2, 3);
+  motion_pump()->SetLinearAccelerationSensorData(true /* active */, 4, 5, 6);
+  motion_pump()->SetGyroscopeSensorData(true /* active */, 7, 8, 9);
+  motion_pump()->StartFireEvent();
 
   base::RunLoop().Run();
 
-  const device::MotionData& received_data = listener()->data();
+  blink::WebDeviceMotionData received_data = listener()->data();
   EXPECT_TRUE(listener()->did_change_device_motion());
+
+  EXPECT_TRUE(received_data.has_acceleration_including_gravity_x);
+  EXPECT_EQ(1, received_data.acceleration_including_gravity_x);
+  EXPECT_TRUE(received_data.has_acceleration_including_gravity_y);
+  EXPECT_EQ(2, received_data.acceleration_including_gravity_y);
+  EXPECT_TRUE(received_data.has_acceleration_including_gravity_z);
+  EXPECT_EQ(3, received_data.acceleration_including_gravity_z);
+
   EXPECT_TRUE(received_data.has_acceleration_x);
-  EXPECT_EQ(1, static_cast<double>(received_data.acceleration_x));
-  EXPECT_TRUE(received_data.has_acceleration_x);
-  EXPECT_EQ(2, static_cast<double>(received_data.acceleration_y));
+  EXPECT_EQ(4, received_data.acceleration_x);
   EXPECT_TRUE(received_data.has_acceleration_y);
-  EXPECT_EQ(3, static_cast<double>(received_data.acceleration_z));
+  EXPECT_EQ(5, received_data.acceleration_y);
   EXPECT_TRUE(received_data.has_acceleration_z);
+  EXPECT_EQ(6, received_data.acceleration_z);
+
+  EXPECT_TRUE(received_data.has_rotation_rate_alpha);
+  EXPECT_EQ(7, received_data.rotation_rate_alpha);
+  EXPECT_TRUE(received_data.has_rotation_rate_beta);
+  EXPECT_EQ(8, received_data.rotation_rate_beta);
+  EXPECT_TRUE(received_data.has_rotation_rate_gamma);
+  EXPECT_EQ(9, received_data.rotation_rate_gamma);
+}
+
+TEST_F(DeviceMotionEventPumpTest, TwoSensorsAreActive) {
+  motion_pump()->Start(listener());
+  motion_pump()->SetAccelerometerSensorData(true /* active */, 1, 2, 3);
+  motion_pump()->SetLinearAccelerationSensorData(false /* active */, 4, 5, 6);
+  motion_pump()->SetGyroscopeSensorData(true /* active */, 7, 8, 9);
+  motion_pump()->StartFireEvent();
+
+  base::RunLoop().Run();
+
+  blink::WebDeviceMotionData received_data = listener()->data();
+  EXPECT_TRUE(listener()->did_change_device_motion());
+
+  EXPECT_TRUE(received_data.has_acceleration_including_gravity_x);
+  EXPECT_EQ(1, received_data.acceleration_including_gravity_x);
+  EXPECT_TRUE(received_data.has_acceleration_including_gravity_y);
+  EXPECT_EQ(2, received_data.acceleration_including_gravity_y);
+  EXPECT_TRUE(received_data.has_acceleration_including_gravity_z);
+  EXPECT_EQ(3, received_data.acceleration_including_gravity_z);
+
+  EXPECT_FALSE(received_data.has_acceleration_x);
+  EXPECT_FALSE(received_data.has_acceleration_y);
+  EXPECT_FALSE(received_data.has_acceleration_z);
+
+  EXPECT_TRUE(received_data.has_rotation_rate_alpha);
+  EXPECT_EQ(7, received_data.rotation_rate_alpha);
+  EXPECT_TRUE(received_data.has_rotation_rate_beta);
+  EXPECT_EQ(8, received_data.rotation_rate_beta);
+  EXPECT_TRUE(received_data.has_rotation_rate_gamma);
+  EXPECT_EQ(9, received_data.rotation_rate_gamma);
+}
+
+TEST_F(DeviceMotionEventPumpTest, NoActiveSensors) {
+  motion_pump()->Start(listener());
+  motion_pump()->StartFireEvent();
+
+  base::RunLoop().Run();
+
+  blink::WebDeviceMotionData received_data = listener()->data();
+  // No change in device motion because no sensor data was updated.
+  EXPECT_FALSE(listener()->did_change_device_motion());
+
+  EXPECT_FALSE(received_data.has_acceleration_x);
+  EXPECT_FALSE(received_data.has_acceleration_y);
+  EXPECT_FALSE(received_data.has_acceleration_z);
+
   EXPECT_FALSE(received_data.has_acceleration_including_gravity_x);
   EXPECT_FALSE(received_data.has_acceleration_including_gravity_y);
   EXPECT_FALSE(received_data.has_acceleration_including_gravity_z);
+
   EXPECT_FALSE(received_data.has_rotation_rate_alpha);
   EXPECT_FALSE(received_data.has_rotation_rate_beta);
   EXPECT_FALSE(received_data.has_rotation_rate_gamma);
-}
-
-TEST_F(DeviceMotionEventPumpTest, DidStartPollingNotAllSensorsActive) {
-  InitBuffer(false);
-
-  motion_pump()->Start(listener());
-  motion_pump()->DidStart(handle());
-
-  base::RunLoop().Run();
-
-  const device::MotionData& received_data = listener()->data();
-  // No change in device motion because all_available_sensors_are_active is
-  // false.
-  EXPECT_FALSE(listener()->did_change_device_motion());
-  EXPECT_FALSE(received_data.has_acceleration_x);
-  EXPECT_FALSE(received_data.has_acceleration_x);
-  EXPECT_FALSE(received_data.has_acceleration_y);
-  EXPECT_FALSE(received_data.has_acceleration_z);
-  EXPECT_FALSE(received_data.has_acceleration_including_gravity_x);
-  EXPECT_FALSE(received_data.has_acceleration_including_gravity_y);
-  EXPECT_FALSE(received_data.has_acceleration_including_gravity_z);
-  EXPECT_FALSE(received_data.has_rotation_rate_alpha);
-  EXPECT_FALSE(received_data.has_rotation_rate_beta);
-  EXPECT_FALSE(received_data.has_rotation_rate_gamma);
 }
 
 // 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());
 
-  InitBuffer(true);
+  motion_pump()->Start(listener());
+  motion_pump()->SetLinearAccelerationSensorData(true /* active */, 4, 5, 6);
 
   motion_pump()->set_stop_on_fire_event(false);
-  motion_pump()->Start(listener());
-  motion_pump()->DidStart(handle());
+  motion_pump()->StartFireEvent();
 
   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, base::MessageLoop::QuitWhenIdleClosure(),
       base::TimeDelta::FromMilliseconds(100));
   base::RunLoop().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