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

chromeos/dbus/fake_bluetooth_gatt_service_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_SERVICE_CLIENT_H_
+#define CHROMEOS_DBUS_FAKE_BLUETOOTH_GATT_SERVICE_CLIENT_H_
+
+#include <string>
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/observer_list.h"
+#include "chromeos/chromeos_export.h"
+#include "chromeos/dbus/bluetooth_gatt_service_client.h"
+#include "dbus/object_path.h"
+#include "dbus/property.h"
+
+namespace chromeos {
+
+// FakeBluetoothGattServiceClient simulates the behavior of the Bluetooth Daemon
+// GATT service objects and is used in test cases in place of a mock and on the
+// Linux desktop.
+class CHROMEOS_EXPORT FakeBluetoothGattServiceClient
+    : public BluetoothGattServiceClient {
+ public:
+  struct Properties : public BluetoothGattServiceClient::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;
+  };
+
+  FakeBluetoothGattServiceClient();
+  virtual ~FakeBluetoothGattServiceClient();
+
+  // DBusClient override.
+  virtual void Init(dbus::Bus* bus) OVERRIDE;
+
+  // BluetoothGattServiceClient overrides.
+  virtual void AddObserver(Observer* observer) OVERRIDE;
+  virtual void RemoveObserver(Observer* observer) OVERRIDE;
+  virtual std::vector<dbus::ObjectPath> GetServices() OVERRIDE;
+  virtual Properties* GetProperties(const dbus::ObjectPath& object_path)
+      OVERRIDE;
+
+  // Makes a service visible for device with object path |device_path|. Note
+  // that only one instance of a specific service is simulated at a time. Hence,
+  // this method will fail, if the service is already visible.
+  void ExposeHeartRateService(const dbus::ObjectPath& device_path);
+  void HideHeartRateService();
+
+  // Final object path components and the corresponding UUIDs of the GATT
+  // services that we emulate. Service paths are hierarchical to Bluetooth
+  // device paths, so if the path component is "service0000", and the device
+  // path is "/org/foo/device0", the service path is
+  // "/org/foo/device0/service0000".
+  static const char kHeartRateServicePathComponent[];
+  static const char kHeartRateServiceUUID[];
+
+ private:
+  // Property callback passed when we create Properties structures.
+  void OnPropertyChanged(const dbus::ObjectPath& object_path,
+                         const std::string& property_name);
+
+  // Notifies observers.
+  void NotifyServiceAdded(const dbus::ObjectPath& object_path);
+  void NotifyServiceRemoved(const dbus::ObjectPath& object_path);
+
+  // Static properties we return. As long as a service is exposed, this will be
+  // non-null. Otherwise it will be null.
+  scoped_ptr<Properties> heart_rate_service_properties_;
+  std::string heart_rate_service_path_;
+
+  // List of observers interested in event notifications from us.
+  ObserverList<Observer> observers_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeBluetoothGattServiceClient);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_DBUS_FAKE_BLUETOOTH_GATT_SERVICE_CLIENT_H_