Adding unit tests for BLE connection.

components/proximity_auth/ble/bluetooth_low_energy_connection.h

 // Copyright 2015 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 COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_LOW_ENERGY_CONNECTION_H
 #define COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_LOW_ENERGY_CONNECTION_H
 
 #include <queue>
 
 #include "base/macros.h"
@@ skipping 41 matching lines @@
                                      public device::BluetoothAdapter::Observer {
  public:
   // Signals sent to the remote device to indicate connection related events.
   enum class ControlSignal : uint32 {
     kInviteToConnectSignal = 0,
     kInvitationResponseSignal = 1,
     kSendSignal = 2,
     kDisconnectSignal = 3,
   };
 
+  // The sub-state of a proximity_auth::BluetoothLowEnergyConnection class
+  // extends the IN_PROGRESS state of proximity_auth::Connection::Status.
+  enum class SubStatus {
+    DISCONNECTED,
+    WAITING_GATT_CONNECTION,
+    GATT_CONNECTION_ESTABLISHED,
+    WAITING_CHARACTERISTICS,
+    CHARACTERISTICS_FOUND,
+    WAITING_NOTIFY_SESSION,
+    NOTIFY_SESSION_READY,
+    WAITING_RESPONSE_SIGNAL,
+    CONNECTED,
+  };
+
   // Constructs a Bluetooth low energy connection to the service with
   // |remote_service_| on the |remote_device|. The |adapter| must be already
   // initaalized and ready. The GATT connection may alreaady be established and
-  // pass through |gatt_connection|. If |gatt_connection| is NULL, a subsequent
-  // call to Connect() must be made.
+  // pass through |gatt_connection|. A subsequent call to Connect() must be
+  // made.
   BluetoothLowEnergyConnection(
       const RemoteDevice& remote_device,
       scoped_refptr<device::BluetoothAdapter> adapter,
       const device::BluetoothUUID remote_service_uuid,
       const device::BluetoothUUID to_peripheral_char_uuid,
       const device::BluetoothUUID from_peripheral_char_uuid,
       scoped_ptr<device::BluetoothGattConnection> gatt_connection,
       int max_number_of_write_attempts);
 
   ~BluetoothLowEnergyConnection() override;
 
   // proximity_auth::Connection
   void Connect() override;
   void Disconnect() override;
 
  protected:
-  // The sub-state of a proximity_auth::BluetoothLowEnergyConnection class
-  // extends the IN_PROGRESS state of proximity_auth::Connection::Status.
-  enum class SubStatus {
-    DISCONNECTED,
-    WAITING_GATT_CONNECTION,
-    GATT_CONNECTION_ESTABLISHED,
-    WAITING_CHARACTERISTICS,
-    CHARACTERISTICS_FOUND,
-    WAITING_NOTIFY_SESSION,
-    NOTIFY_SESSION_READY,
-    WAITING_RESPONSE_SIGNAL,
-    CONNECTED,
-  };
-
+  // Exposed for testing.
   void SetSubStatus(SubStatus status);
   SubStatus sub_status() { return sub_status_; }
 
+  // Virtual for testing.
+  virtual BluetoothLowEnergyCharacteristicsFinder* CreateCharacteristicsFinder(
+      const BluetoothLowEnergyCharacteristicsFinder::SuccessCallback&
+          success_callback,
+      const BluetoothLowEnergyCharacteristicsFinder::ErrorCallback&
+          error_callback);
+
   // proximity_auth::Connection
   void SendMessageImpl(scoped_ptr<WireMessage> message) override;
   scoped_ptr<WireMessage> DeserializeWireMessage(
       bool* is_incomplete_message) override;
 
   // device::BluetoothAdapter::Observer
   void DeviceRemoved(device::BluetoothAdapter* adapter,
                      device::BluetoothDevice* device) override;
   void GattCharacteristicValueChanged(
       device::BluetoothAdapter* adapter,
@@ skipping 157 matching lines @@
   base::TimeTicks start_time_;
 
   base::WeakPtrFactory<BluetoothLowEnergyConnection> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothLowEnergyConnection);
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_BLUETOOTH_LOW_ENERGY_CONNECTION_H