services/video_capture/fake_device_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/fake_device_test.h"
#include "services/video_capture/mock_video_capture_device_client.h"
#include "services/video_capture/public/interfaces/video_capture_device_factory.mojom.h"
#include "services/video_capture/video_capture_service_test.h"

using testing::_;
using testing::InvokeWithoutArgs;

namespace video_capture {

TEST_F(FakeDeviceTest, FrameCallbacksArrive) {
  auto arbitrary_requested_format = mojom::VideoCaptureFormat::New();
  arbitrary_requested_format->frame_size.SetSize(640, 480);
  arbitrary_requested_format->frame_rate = 15;
  arbitrary_requested_format->pixel_format = media::mojom::VideoFormat::I420;
  arbitrary_requested_format->pixel_storage = mojom::VideoPixelStorage::CPU;

  base::RunLoop wait_loop;
  const int kNumFramesToWaitFor = 3;
  int num_frames_arrived = 0;
  mojom::VideoCaptureDeviceClientPtr client_proxy;
  MockVideoCaptureDeviceClient client(mojo::GetProxy(&client_proxy));
  EXPECT_CALL(client, OnFrameAvailablePtr(_))
      .WillRepeatedly(InvokeWithoutArgs(
          [&wait_loop, &kNumFramesToWaitFor, &num_frames_arrived]() {
            num_frames_arrived += 1;
            if (num_frames_arrived >= kNumFramesToWaitFor) {
              wait_loop.Quit();
            }
          }));

  fake_device_proxy_->Start(std::move(arbitrary_requested_format),
                            mojom::ResolutionChangePolicy::FIXED_RESOLUTION,
                            mojom::PowerLineFrequency::DEFAULT,
                            std::move(client_proxy));
  wait_loop.Run();
}

}  // namespace video_capture