Bluetooth: macOS: Implementing read/write for descriptors

device/bluetooth/test/bluetooth_test_mac.h

Index: device/bluetooth/test/bluetooth_test_mac.h
diff --git a/device/bluetooth/test/bluetooth_test_mac.h b/device/bluetooth/test/bluetooth_test_mac.h
index 46e168a4d7c103432301130a05f5c1e113bd6085..70f1a4df405a0dc99fdeb25fbecf6bcb2fb8dc37 100644
--- a/device/bluetooth/test/bluetooth_test_mac.h
+++ b/device/bluetooth/test/bluetooth_test_mac.h
@@ -11,9 +11,11 @@
 #include "device/bluetooth/test/bluetooth_test.h"
 
 #if __OBJC__
+@class MockCBDescriptor;
 @class MockCBCharacteristic;
 @class MockCBPeripheral;
 #else   // __OBJC__
+class MockCBDescriptor;
 class MockCBCharacteristic;
 class MockCBPeripheral;
 #endif  // __OBJC__
@@ -85,6 +87,16 @@ class BluetoothTestMac : public BluetoothTestBase {
   void SimulateGattCharacteristicRemoved(
       BluetoothRemoteGattService* service,
       BluetoothRemoteGattCharacteristic* characteristic) override;
+  void SimulateGattDescriptorRead(BluetoothRemoteGattDescriptor* descriptor,
+                                  const std::vector<uint8_t>& value) override;
+  void SimulateGattDescriptorReadError(
+      BluetoothRemoteGattDescriptor* descriptor,
+      BluetoothRemoteGattService::GattErrorCode error_code) override;
+  void SimulateGattDescriptorWrite(
+      BluetoothRemoteGattDescriptor* descriptor) override;
+  void SimulateGattDescriptorWriteError(
+      BluetoothRemoteGattDescriptor* descriptor,
+      BluetoothRemoteGattService::GattErrorCode error_code) override;
   void ExpectedChangeNotifyValueAttempts(int attempts) override;
   void ExpectedNotifyValue(NotifyValueState expected_value_state) override;
 
@@ -104,6 +116,8 @@ class BluetoothTestMac : public BluetoothTestBase {
   void OnFakeBluetoothCharacteristicReadValue();
   void OnFakeBluetoothCharacteristicWriteValue(std::vector<uint8_t> value);
   void OnFakeBluetoothGattSetCharacteristicNotification(bool notify_value);
+  void OnFakeBluetoothDescriptorReadValue();
+  void OnFakeBluetoothDescriptorWriteValue(std::vector<uint8_t> value);
 
   // Returns the service UUIDs used to retrieve connected peripherals.
   BluetoothDevice::UUIDSet RetrieveConnectedPeripheralServiceUUIDs();
@@ -121,9 +135,15 @@ class BluetoothTestMac : public BluetoothTestBase {
   // Returns MockCBPeripheral from BluetoothRemoteGattCharacteristic.
   MockCBPeripheral* GetMockCBPeripheral(
       BluetoothRemoteGattCharacteristic* characteristic) const;
+  // Returns MockCBPeripheral from BluetoothRemoteGattDescriptor.
+  MockCBPeripheral* GetMockCBPeripheral(
+      BluetoothRemoteGattDescriptor* descriptor) const;
   // Returns MockCBCharacteristic from BluetoothRemoteGattCharacteristic.
   MockCBCharacteristic* GetCBMockCharacteristic(
       BluetoothRemoteGattCharacteristic* characteristic) const;
+  // Returns MockCBDescriptor from BluetoothRemoteGattDescriptor.
+  MockCBDescriptor* GetCBMockDescriptor(
+      BluetoothRemoteGattDescriptor* descriptor) const;
   // Adds services in MockCBPeripheral.
   void AddServicesToDevice(BluetoothDevice* device,
                            const std::vector<std::string>& uuids);