content/browser/media/flinging_renderer_unittest.cc

// Copyright 2018 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 "content/browser/media/flinging_renderer.h"

#include "base/version.h"
#include "media/base/media_controller.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"

using ::testing::_;
using ::testing::StrictMock;

namespace content {

class MockMediaController : public media::MediaController {
 public:
  MOCK_METHOD0(Play, void());
  MOCK_METHOD0(Pause, void());
  MOCK_METHOD1(SetMute, void(bool));
  MOCK_METHOD1(SetVolume, void(float));
  MOCK_METHOD1(Seek, void(base::TimeDelta));
};

class FlingingRendererTest : public testing::Test {
 public:
  FlingingRendererTest()
      : media_controller_(new StrictMock<MockMediaController>()),
        renderer_(std::unique_ptr<media::MediaController>(media_controller_)) {}

 protected:
  StrictMock<MockMediaController>* media_controller_;
  FlingingRenderer renderer_;
};

TEST_F(FlingingRendererTest, StartPlayingFromTime) {
  base::TimeDelta seek_time = base::TimeDelta::FromSeconds(10);
  EXPECT_CALL(*media_controller_, Play());
  EXPECT_CALL(*media_controller_, Seek(seek_time));

  renderer_.StartPlayingFrom(seek_time);
}

TEST_F(FlingingRendererTest, StartPlayingFromBeginning) {
  EXPECT_CALL(*media_controller_, Play());
  EXPECT_CALL(*media_controller_, Seek(base::TimeDelta()));

  renderer_.StartPlayingFrom(base::TimeDelta());
}

TEST_F(FlingingRendererTest, SetPlaybackRate) {
  double playback_rate = 1.0;
  EXPECT_CALL(*media_controller_, Play());

  renderer_.SetPlaybackRate(playback_rate);
}

TEST_F(FlingingRendererTest, SetPlaybackRateToZero) {
  double playback_rate = 0.0;
  EXPECT_CALL(*media_controller_, Pause());

  renderer_.SetPlaybackRate(playback_rate);
}

// Setting the volume to a positive value should not change the mute state.
TEST_F(FlingingRendererTest, SetVolume) {
  float volume = 0.5;
  EXPECT_CALL(*media_controller_, SetVolume(volume));
  EXPECT_CALL(*media_controller_, SetMute(_)).Times(0);

  renderer_.SetVolume(volume);
}

// Setting the volume to 0 should not set the mute state.
TEST_F(FlingingRendererTest, SetVolumeToZero) {
  float volume = 0;
  EXPECT_CALL(*media_controller_, SetVolume(volume));
  EXPECT_CALL(*media_controller_, SetMute(_)).Times(0);

  renderer_.SetVolume(volume);
}

}  // namespace content