Bluetooth: Mac: implementation for start notification

device/bluetooth/test/mock_bluetooth_cbcharacteristic_mac.mm

 // 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.
 
 #include "device/bluetooth/test/mock_bluetooth_cbcharacteristic_mac.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "device/bluetooth/bluetooth_gatt_characteristic.h"
 
@@ skipping 76 matching lines @@
 }
 }  // namespace
 }  // device
 
 @interface MockCBCharacteristic () {
   // Owner of this instance.
   CBService* _service;
   scoped_nsobject<CBUUID> _UUID;
   CBCharacteristicProperties _cb_properties;
   base::scoped_nsobject<NSData> _value;
+  BOOL _notifying;
 }
 @end
 
 @implementation MockCBCharacteristic
 
 - (instancetype)initWithService:(CBService*)service
                          CBUUID:(CBUUID*)uuid
                      properties:(int)properties {
   self = [super init];
   if (self) {
@@ skipping 30 matching lines @@
                                 error:error];
 }
 
 - (void)simulateWriteWithError:(NSError*)error {
   CBPeripheral* peripheral = _service.peripheral;
   [peripheral.delegate peripheral:peripheral
       didWriteValueForCharacteristic:self.characteristic
                                error:error];
 }
 
+- (void)simulateGattNotifySessionStarted {
+  _notifying = YES;
+  CBPeripheral* peripheral = _service.peripheral;
+  [peripheral.delegate peripheral:peripheral
+      didUpdateNotificationStateForCharacteristic:self.characteristic
+                                            error:nil];
+}
+
+- (void)simulateGattNotifySessionFailedWithError:(NSError*)error {
+  CBPeripheral* peripheral = _service.peripheral;
+  [peripheral.delegate peripheral:peripheral
+      didUpdateNotificationStateForCharacteristic:self.characteristic
+                                            error:error];
+}
+
+- (void)simulateGattCharacteristicChangedWithValue:(NSData*)value {
+  _value.reset([value copy]);
+  CBPeripheral* peripheral = _service.peripheral;
+  [peripheral.delegate peripheral:peripheral
+      didUpdateValueForCharacteristic:self.characteristic
+                                error:nil];
+}
+
 - (CBUUID*)UUID {
   return _UUID.get();
 }
 
 - (CBCharacteristic*)characteristic {
   return ObjCCast<CBCharacteristic>(self);
 }
 
 - (CBService*)service {
   return _service;
 }
 
 - (CBCharacteristicProperties)properties {
   return _cb_properties;
 }
 
 - (NSData*)value {
   return _value.get();
 }
 
+- (BOOL)isNotifying {
+  return _notifying;
+}
+
 @end