File: HTMLVideoElementTest.cpp

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// Copyright 2015 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 "core/html/HTMLVideoElement.h"

#include "core/dom/Document.h"
#include "core/dom/DocumentUserGestureToken.h"
#include "core/loader/EmptyClients.h"
#include "core/page/NetworkStateNotifier.h"
#include "core/testing/DummyPageHolder.h"
#include "platform/UserGestureIndicator.h"
#include "platform/testing/UnitTestHelpers.h"
#include "public/platform/WebMediaPlayer.h"
#include "public/platform/WebSize.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "wtf/PtrUtil.h"
#include <memory>

namespace blink {

namespace {

class EmptyWebMediaPlayer : public WebMediaPlayer {
 public:
  void load(LoadType, const WebMediaPlayerSource&, CORSMode) override{};
  void play() override{};
  void pause() override{};
  bool supportsSave() const override { return false; };
  void seek(double seconds) override{};
  void setRate(double) override{};
  void setVolume(double) override{};
  WebTimeRanges buffered() const override { return WebTimeRanges(); };
  WebTimeRanges seekable() const override { return WebTimeRanges(); };
  void setSinkId(const WebString& sinkId,
                 const WebSecurityOrigin&,
                 WebSetSinkIdCallbacks*) override{};
  bool hasVideo() const override { return false; };
  bool hasAudio() const override { return false; };
  WebSize naturalSize() const override { return WebSize(0, 0); };
  bool paused() const override { return false; };
  bool seeking() const override { return false; };
  double duration() const override { return 0.0; };
  double currentTime() const override { return 0.0; };
  NetworkState getNetworkState() const override { return NetworkStateEmpty; };
  ReadyState getReadyState() const override { return ReadyStateHaveNothing; };
  WebString getErrorMessage() override { return WebString(); };
  bool didLoadingProgress() override { return false; };
  bool hasSingleSecurityOrigin() const override { return true; };
  bool didPassCORSAccessCheck() const override { return true; };
  double mediaTimeForTimeValue(double timeValue) const override {
    return timeValue;
  };
  unsigned decodedFrameCount() const override { return 0; };
  unsigned droppedFrameCount() const override { return 0; };
  size_t audioDecodedByteCount() const override { return 0; };
  size_t videoDecodedByteCount() const override { return 0; };
  void paint(WebCanvas*, const WebRect&, SkPaint&) override{};
};

class MockWebMediaPlayer : public EmptyWebMediaPlayer {
 public:
  MOCK_METHOD1(setBufferingStrategy, void(BufferingStrategy));
};

class StubFrameLoaderClient : public EmptyFrameLoaderClient {
 public:
  static StubFrameLoaderClient* create() { return new StubFrameLoaderClient; }

  std::unique_ptr<WebMediaPlayer> createWebMediaPlayer(
      HTMLMediaElement&,
      const WebMediaPlayerSource&,
      WebMediaPlayerClient*) override {
    return WTF::wrapUnique(new MockWebMediaPlayer);
  }
};

}  // namespace

class HTMLVideoElementTest : public ::testing::Test {
 protected:
  HTMLVideoElementTest()
      : m_dummyPageHolder(
            DummyPageHolder::create(IntSize(640, 360),
                                    nullptr,
                                    StubFrameLoaderClient::create())) {
    // TODO(sandersd): This should be done by a settings initializer.
    networkStateNotifier().setWebConnection(WebConnectionTypeWifi, 54.0);
    m_video = HTMLVideoElement::create(m_dummyPageHolder->document());
  }

  void setSrc(const AtomicString& url) {
    m_video->setSrc(url);
    testing::runPendingTasks();
  }

  MockWebMediaPlayer* webMediaPlayer() {
    return static_cast<MockWebMediaPlayer*>(m_video->webMediaPlayer());
  }

  std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
  Persistent<HTMLVideoElement> m_video;
};

TEST_F(HTMLVideoElementTest, setBufferingStrategy_NonUserPause) {
  setSrc("http://foo.bar/");
  MockWebMediaPlayer* player = webMediaPlayer();
  ASSERT_TRUE(player);

  // On play, the strategy is set to normal.
  EXPECT_CALL(*player,
              setBufferingStrategy(WebMediaPlayer::BufferingStrategy::Normal));
  m_video->play();
  ::testing::Mock::VerifyAndClearExpectations(player);

  // On a non-user pause, the strategy is not changed.
  m_video->pause();
  ::testing::Mock::VerifyAndClearExpectations(player);

  // On play, the strategy is set to normal.
  EXPECT_CALL(*player,
              setBufferingStrategy(WebMediaPlayer::BufferingStrategy::Normal));
  m_video->play();
  ::testing::Mock::VerifyAndClearExpectations(player);
}

TEST_F(HTMLVideoElementTest, setBufferingStrategy_UserPause) {
  setSrc("http://foo.bar/");
  MockWebMediaPlayer* player = webMediaPlayer();
  ASSERT_TRUE(player);

  // On play, the strategy is set to normal.
  EXPECT_CALL(*player,
              setBufferingStrategy(WebMediaPlayer::BufferingStrategy::Normal));
  m_video->play();
  ::testing::Mock::VerifyAndClearExpectations(player);

  // On a user pause, the strategy is set to aggressive.
  EXPECT_CALL(*player, setBufferingStrategy(
                           WebMediaPlayer::BufferingStrategy::Aggressive));
  {
    UserGestureIndicator gesture(
        DocumentUserGestureToken::create(&m_video->document()));
    m_video->pause();
  }
  ::testing::Mock::VerifyAndClearExpectations(player);

  // On play, the strategy is set to normal.
  EXPECT_CALL(*player,
              setBufferingStrategy(WebMediaPlayer::BufferingStrategy::Normal));
  m_video->play();
  ::testing::Mock::VerifyAndClearExpectations(player);
}

}  // namespace blink