[sensors] Add Generic Sensor platform unit tests.

device/generic_sensor/mock_platform_sensor.h

+// Copyright 2016 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.
+
+#ifndef DEVICE_GENERIC_SENSOR_MOCK_PLATFORM_SENSOR_H_
+#define DEVICE_GENERIC_SENSOR_MOCK_PLATFORM_SENSOR_H_
+
+#include "device/generic_sensor/platform_sensor.h"
+
+namespace device {
+
+class MockPlatformSensor : public PlatformSensor {

[timvolodine, 2016/09/13 19:38:53]

FakePlatformSensor?

[maksims (do not use this acc), 2016/09/16 09:22:19]

We better go with Mock names.

+ public:
+  MockPlatformSensor(mojom::SensorType type,
+                     mojo::ScopedSharedBufferMapping mapping,
+                     uint64_t buffer_size,
+                     PlatformSensorProvider* provider);
+
+  mojom::ReportingMode GetReportingMode() override;
+  PlatformSensorConfiguration GetDefaultConfiguration() override;
+
+  bool started() { return started_; }

[Mikhail, 2016/09/13 10:31:16]

nit: const method

[maksims (do not use this acc), 2016/09/16 09:22:19]

Done.

+
+  void NotifySensorReadingChanged();
+  void NotifySensorError();
+
+  const ConfigMap& config_map() const { return config_map_; }
+
+ protected:
+  ~MockPlatformSensor() override;
+  bool StartSensor(const PlatformSensorConfiguration& configuration) override;
+  void StopSensor() override;
+  bool CheckSensorConfiguration(
+      const PlatformSensorConfiguration& configuration) override;
+
+ private:
+  static constexpr double kMaxFrequencyValueForTests = 50.0;
+
+  PlatformSensorConfiguration config_;
+
+  bool started_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockPlatformSensor);
+};
+
+}  // namespace device
+
+#endif /* DEVICE_GENERIC_SENSOR_MOCK_PLATFORM_SENSOR_H_ */

[timvolodine, 2016/09/13 19:38:52]

#endif  // DEVICE_GENERIC_SENSOR_MOCK_PLATFORM_SENSOR_H_

and also elsewhere

[maksims (do not use this acc), 2016/09/16 09:22:19]

Done.