Video Capture Mojo (1.4c): Handle Subsequent Access

services/video_capture/video_capture_service_unittest.cc

 // 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 "base/memory/ref_counted.h"
 #include "base/run_loop.h"
 #include "services/video_capture/public/interfaces/video_capture_device_factory.mojom.h"
 #include "services/video_capture/video_capture_service_test.h"
 
 using testing::Exactly;
 using testing::_;
 using testing::Invoke;
 using testing::InvokeWithoutArgs;
 
 namespace video_capture {
 
+class MockCreateDeviceProxyCallback {
+ public:
+  MOCK_METHOD1(Run, void(mojom::DeviceAccessResultCode result_code));
+};
+
 // Tests that an answer arrives from the service when calling
 // EnumerateDeviceDescriptors().
 TEST_F(VideoCaptureServiceTest, EnumerateDeviceDescriptorsCallbackArrives) {
   base::RunLoop wait_loop;
   EXPECT_CALL(descriptor_receiver_, OnEnumerateDeviceDescriptorsCallback(_))
       .Times(Exactly(1))
       .WillOnce(InvokeWithoutArgs([&wait_loop]() { wait_loop.Quit(); }));
 
   factory_->EnumerateDeviceDescriptors(base::Bind(
       &MockDeviceDescriptorReceiver::HandleEnumerateDeviceDescriptorsCallback,
@@ skipping 21 matching lines @@
 }
 
 // Tests that VideoCaptureDeviceFactory::CreateDeviceProxy() returns an error
 // code when trying to create a device for an invalid descriptor.
 TEST_F(VideoCaptureServiceTest, ErrorCodeOnCreateDeviceForInvalidDescriptor) {
   auto invalid_descriptor = mojom::VideoCaptureDeviceDescriptor::New();
   invalid_descriptor->device_id = "invalid";
   invalid_descriptor->model_id = "invalid";
   base::RunLoop wait_loop;
   mojom::VideoCaptureDeviceProxyPtr fake_device_proxy;
-  mojom::DeviceAccessResultCode result_code;
+  MockCreateDeviceProxyCallback create_device_proxy_callback;
+  EXPECT_CALL(create_device_proxy_callback,
+              Run(mojom::DeviceAccessResultCode::ERROR_DEVICE_NOT_FOUND))
+      .Times(1)
+      .WillOnce(InvokeWithoutArgs([&wait_loop]() { wait_loop.Quit(); }));
   factory_->CreateDeviceProxy(
       std::move(invalid_descriptor), mojo::GetProxy(&fake_device_proxy),
-      base::Bind(
-          [](base::RunLoop* wait_loop, mojom::DeviceAccessResultCode* target,
-             mojom::DeviceAccessResultCode result_code) {
-            *target = result_code;
-            wait_loop->Quit();
-          },
-          &wait_loop, &result_code));
+      base::Bind(&MockCreateDeviceProxyCallback::Run,
+                 base::Unretained(&create_device_proxy_callback)));
   wait_loop.Run();
-  ASSERT_EQ(mojom::DeviceAccessResultCode::ERROR_DEVICE_NOT_FOUND, result_code);
 }
 
 }  // namespace video_capture