chromeos/dbus: Add fake D-Bus clients for GATT client-mode.

chromeos/dbus/fake_bluetooth_gatt_characteristic_client.h

+// 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.
+
+#ifndef CHROMEOS_DBUS_FAKE_BLUETOOTH_GATT_CHARACTERISTIC_CLIENT_H_
+#define CHROMEOS_DBUS_FAKE_BLUETOOTH_GATT_CHARACTERISTIC_CLIENT_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
+#include "chromeos/chromeos_export.h"
+#include "chromeos/dbus/bluetooth_gatt_characteristic_client.h"
+#include "dbus/object_path.h"
+#include "dbus/property.h"
+
+namespace chromeos {
+
+// FakeBluetoothGattCharacteristicClient simulates the behavior of the
+// Bluetooth Daemon GATT characteristic objects and is used in test cases in
+// place of a mock and on the Linux desktop.
+class CHROMEOS_EXPORT FakeBluetoothGattCharacteristicClient
+    : public BluetoothGattCharacteristicClient {
+ public:
+  struct Properties : public BluetoothGattCharacteristicClient::Properties {
+    explicit Properties(const PropertyChangedCallback& callback);
+    virtual ~Properties();
+
+    // dbus::PropertySet override
+    virtual void Get(dbus::PropertyBase* property,
+                     dbus::PropertySet::GetCallback callback) OVERRIDE;
+    virtual void GetAll() OVERRIDE;
+    virtual void Set(dbus::PropertyBase* property,
+                     dbus::PropertySet::SetCallback callback) OVERRIDE;
+  };
+
+  FakeBluetoothGattCharacteristicClient();
+  virtual ~FakeBluetoothGattCharacteristicClient();
+
+  // DBusClient override.
+  virtual void Init(dbus::Bus* bus) OVERRIDE;
+
+  // BluetoothGattCharacteristicClient overrides.
+  virtual void AddObserver(Observer* observer) OVERRIDE;
+  virtual void RemoveObserver(Observer* observer) OVERRIDE;
+  virtual std::vector<dbus::ObjectPath> GetCharacteristics() OVERRIDE;
+  virtual Properties* GetProperties(const dbus::ObjectPath& object_path)
+      OVERRIDE;
+
+  // Makes the group of characteristics belonging to a particular GATT based
+  // profile available under the GATT service with object path |service_path|.
+  // Characteristic paths are hierarchical to service paths.
+  void ExposeHeartRateCharacteristics(const dbus::ObjectPath& service_path);
+  void HideHeartRateCharacteristics();
+
+  // Object path components and UUIDs of GATT characteristics.
+  // Heart Rate Service:
+  static const char kHeartRateMeasurementPathComponent[];
+  static const char kHeartRateMeasurementUUID[];
+  static const char kBodySensorLocationPathComponent[];
+  static const char kBodySensorLocationUUID[];
+  static const char kHeartRateControlPointPathComponent[];
+  static const char kHeartRateControlPointUUID[];
+
+ private:
+  // Property callback passed when we create Properties structures.
+  void OnPropertyChanged(const dbus::ObjectPath& object_path,
+                         const std::string& property_name);
+
+  // Notifies observers.
+  void NotifyCharacteristicAdded(const dbus::ObjectPath& object_path);
+  void NotifyCharacteristicRemoved(const dbus::ObjectPath& object_path);
+
+  // Schedules a heart rate measurement value change, if the heart rate
+  // characteristics are visible.
+  void ScheduleHeartRateMeasurementValueChange();
+
+  // Returns a random Heart Rate Measurement value. All the fields of the value
+  // are populated according to the the fake behavior. The measurement value
+  // is a random value within a reasonable range.
+  std::vector<uint8> GetHeartRateMeasurementValue();
+
+  // Returns whether or not the heart rate characteristics are visible and
+  // performs the appropriate assertions.
+  bool IsHeartRateVisible() const;
+
+  // If true, characteristics of the Heart Rate Service are visible. Use
+  // IsHeartRateVisible() to check the value.
+  bool heart_rate_visible_;
+
+  // Total calories burned, used for the Heart Rate Measurement characteristic.
+  uint16 calories_burned_;
+
+  // Static properties returned for simulated characteristics for the Heart
+  // Rate Service. These pointers are not NULL only if the characteristics are
+  // actually exposed.
+  scoped_ptr<Properties> heart_rate_measurement_properties_;
+  scoped_ptr<Properties> body_sensor_location_properties_;
+  scoped_ptr<Properties> heart_rate_control_point_properties_;
+
+  // Object paths of the exposed characteristics. If a characteristic is not
+  // exposed, these will be empty.
+  std::string heart_rate_measurement_path_;
+  std::string body_sensor_location_path_;
+  std::string heart_rate_control_point_path_;
+
+  // List of observers interested in event notifications from us.
+  ObserverList<Observer> observers_;
+
+  // Weak pointer factory for generating 'this' pointers that might live longer
+  // than we do.
+  // Note: This should remain the last member so it'll be destroyed and
+  // invalidate its weak pointers before any other members are destroyed.
+  base::WeakPtrFactory<FakeBluetoothGattCharacteristicClient>
+      weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeBluetoothGattCharacteristicClient);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_DBUS_FAKE_BLUETOOTH_GATT_CHARACTERISTIC_CLIENT_H_