[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"
+
+#include "base/memory/singleton.h"

[shalamov, 2016/09/07 09:53:01]

Is this needed?

[maksims (do not use this acc), 2016/09/09 10:39:05]

Put it in wrong header.

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

[Mikhail, 2016/09/07 10:46:19]

bool started() const {}

[maksims (do not use this acc), 2016/09/09 10:39:05]

Done.

+
+  void NotifySensorReadingChanged();
+  void NotifySensorError();
+
+  const ConfigMap& GetConfigMap() { return config_map_; }

[Mikhail, 2016/09/07 10:46:19]

const ConfigMap& config_map() const {}

[maksims (do not use this acc), 2016/09/09 10:39:06]

Done.

+
+ protected:
+  ~MockPlatformSensor() override;
+  bool StartSensor(const PlatformSensorConfiguration& configuration) override;
+  void StopSensor() override;
+  bool CheckSensorConfiguration(
+      const PlatformSensorConfiguration& configuration) override;
+
+ private:
+  static constexpr double kMaxFrequencyValue = 50.0;

[Mikhail, 2016/09/07 10:46:19]

why not use PlatformSensorConfiguration::kMaxAllowedFrequency ?

[maksims (do not use this acc), 2016/09/09 10:39:05]

I though a bit different way. PlatformSensorConfiguration::kMaxAllowedFrequency
seems like a common frequency restriction for all the sensors, but then each
sensor can have it's own restriction, which is less that
PlatformSensorConfiguration::kMaxAllowedFrequency. Isn't it so?

+
+  PlatformSensorConfiguration config_;
+
+  bool started_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockPlatformSensor);
+};
+
+}  // namespace device
+
+#endif /* DEVICE_GENERIC_SENSOR_MOCK_PLATFORM_SENSOR_H_ */