Bluetooth: macOS: Implementing read/write for descriptors

device/bluetooth/test/bluetooth_test_mac.mm

Index: device/bluetooth/test/bluetooth_test_mac.mm
diff --git a/device/bluetooth/test/bluetooth_test_mac.mm b/device/bluetooth/test/bluetooth_test_mac.mm
index 777e91339cf66d8d512b200378f7e9f0ebc7f116..4084676632ef6dc05f835695150e5a34f21e13e1 100644
--- a/device/bluetooth/test/bluetooth_test_mac.mm
+++ b/device/bluetooth/test/bluetooth_test_mac.mm
@@ -13,8 +13,10 @@
 #include "device/bluetooth/bluetooth_adapter_mac.h"
 #include "device/bluetooth/bluetooth_device_mac.h"
 #include "device/bluetooth/bluetooth_remote_gatt_characteristic_mac.h"
+#include "device/bluetooth/bluetooth_remote_gatt_descriptor_mac.h"
 #include "device/bluetooth/bluetooth_remote_gatt_service_mac.h"
 #include "device/bluetooth/test/mock_bluetooth_cbcharacteristic_mac.h"
+#include "device/bluetooth/test/mock_bluetooth_cbdescriptor_mac.h"
 #include "device/bluetooth/test/mock_bluetooth_cbperipheral_mac.h"
 #include "device/bluetooth/test/mock_bluetooth_cbservice_mac.h"
 #include "device/bluetooth/test/mock_bluetooth_central_manager_mac.h"
@@ -446,6 +448,33 @@ void BluetoothTestMac::SimulateGattCharacteristicRemoved(
   [peripheral_mock mockDidDiscoverEvents];
 }
 
+void BluetoothTestMac::SimulateGattDescriptorRead(
+    BluetoothRemoteGattDescriptor* descriptor,
+    const std::vector<uint8_t>& value) {
+  scoped_nsobject<NSData> data(
+      [[NSData alloc] initWithBytes:value.data() length:value.size()]);
+  [GetCBMockDescriptor(descriptor) simulateReadWithValue:data error:nil];
+}
+
+void BluetoothTestMac::SimulateGattDescriptorReadError(
+    BluetoothRemoteGattDescriptor* descriptor,
+    BluetoothRemoteGattService::GattErrorCode error_code) {
+  NSError* error = BluetoothDeviceMac::GetNSErrorFromGattErrorCode(error_code);
+  [GetCBMockDescriptor(descriptor) simulateReadWithValue:nil error:error];
+}
+
+void BluetoothTestMac::SimulateGattDescriptorWrite(
+    BluetoothRemoteGattDescriptor* descriptor) {
+  [GetCBMockDescriptor(descriptor) simulateWriteWithError:nil];
+}
+
+void BluetoothTestMac::SimulateGattDescriptorWriteError(
+    BluetoothRemoteGattDescriptor* descriptor,
+    BluetoothRemoteGattService::GattErrorCode error_code) {
+  NSError* error = BluetoothDeviceMac::GetNSErrorFromGattErrorCode(error_code);
+  [GetCBMockDescriptor(descriptor) simulateWriteWithError:error];
+}
+
 void BluetoothTestMac::ExpectedChangeNotifyValueAttempts(int attempts) {
   EXPECT_EQ(attempts, gatt_notify_characteristic_attempts_);
 }
@@ -502,6 +531,16 @@ void BluetoothTest::OnFakeBluetoothGattSetCharacteristicNotification(
   gatt_notify_characteristic_attempts_++;
 }
 
+void BluetoothTest::OnFakeBluetoothDescriptorReadValue() {
+  gatt_read_descriptor_attempts_++;
+}
+
+void BluetoothTest::OnFakeBluetoothDescriptorWriteValue(
+    std::vector<uint8_t> value) {
+  last_write_value_ = value;
+  gatt_write_descriptor_attempts_++;
+}
+
 BluetoothDevice::UUIDSet
 BluetoothTestMac::RetrieveConnectedPeripheralServiceUUIDs() {
   BluetoothDevice::UUIDSet service_uuids;
@@ -540,6 +579,11 @@ MockCBPeripheral* BluetoothTestMac::GetMockCBPeripheral(
   return GetMockCBPeripheral(characteristic->GetService());
 }
 
+MockCBPeripheral* BluetoothTestMac::GetMockCBPeripheral(
+    BluetoothRemoteGattDescriptor* descriptor) const {
+  return GetMockCBPeripheral(descriptor->GetCharacteristic());
+}
+
 MockCBCharacteristic* BluetoothTest::GetCBMockCharacteristic(
     BluetoothRemoteGattCharacteristic* characteristic) const {
   device::BluetoothRemoteGattCharacteristicMac* mac_gatt_characteristic =
@@ -550,6 +594,14 @@ MockCBCharacteristic* BluetoothTest::GetCBMockCharacteristic(
   return ObjCCast<MockCBCharacteristic>(cb_characteristic);
 }
 
+MockCBDescriptor* BluetoothTest::GetCBMockDescriptor(
+    BluetoothRemoteGattDescriptor* descriptor) const {
+  device::BluetoothRemoteGattDescriptorMac* mac_gatt_descriptor =
+      static_cast<device::BluetoothRemoteGattDescriptorMac*>(descriptor);
+  CBDescriptor* cb_descriptor = mac_gatt_descriptor->GetCBDescriptor();
+  return ObjCCast<MockCBDescriptor>(cb_descriptor);
+}
+
 void BluetoothTest::AddServicesToDevice(BluetoothDevice* device,
                                         const std::vector<std::string>& uuids) {
   scoped_nsobject<NSMutableArray> services([[NSMutableArray alloc] init]);