Render inband text tracks in the media pipeline

media/base/text_renderer_unittest.cc

+// Copyright 2013 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 <vector>
+
+#include "base/bind.h"
+#include "base/callback_helpers.h"
+#include "base/memory/scoped_vector.h"
+#include "base/message_loop/message_loop.h"
+#include "media/base/audio_decoder_config.h"
+#include "media/base/decoder_buffer.h"
+#include "media/base/demuxer_stream.h"
+#include "media/base/text_renderer.h"
+#include "media/base/text_track_config.h"
+#include "media/base/video_decoder_config.h"
+#include "media/filters/webvtt_util.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using ::testing::Eq;
+using ::testing::Exactly;
+using ::testing::Invoke;
+using ::testing::_;
+
+namespace media {
+
+class TextRendererTest;
+class FakeTextTrack;

[acolwell GONE FROM CHROMIUM, 2013/11/20 01:15:24]

nit: I don't think these 2 forward declarations are needed anymore.

[Matthew Heaney (Chromium), 2013/11/20 19:23:16]

Done.

+
+// Local implementation of the TextTrack interface.
+class FakeTextTrack : public TextTrack {
+ public:
+  FakeTextTrack(const base::Closure& destroy_cb,
+                const TextTrackConfig& config)
+      : destroy_cb_(destroy_cb),
+        config_(config) {
+  }
+  virtual ~FakeTextTrack() {
+    destroy_cb_.Run();
+  }
+
+  MOCK_METHOD5(addWebVTTCue, void(const base::TimeDelta& start,
+                                  const base::TimeDelta& end,
+                                  const std::string& id,
+                                  const std::string& content,
+                                  const std::string& settings));
+
+  const base::Closure destroy_cb_;
+  const TextTrackConfig config_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FakeTextTrack);
+};
+
+// Local implementation of the DemuxerStream.  These are the stream objects
+// we pass to the text renderer object when streams are added and removed.
+class TextTrackStream : public DemuxerStream {

[acolwell GONE FROM CHROMIUM, 2013/11/20 01:15:24]

Why do you need this? This looks very similar to FakeTextTrackStream. Please
rework these tests in terms of FakeTextTrackStream so we don't have duplicate
code.

[Matthew Heaney (Chromium), 2013/11/20 19:23:16]

Done.

+ public:
+  TextTrackStream() {}
+  virtual ~TextTrackStream() {
+    DCHECK(read_cb_.is_null());
+  }
+
+  // DemuxerStream implementation.
+
+  void Read(const ReadCB& read_cb) {
+    OnRead();
+    EXPECT_FALSE(read_cb.is_null());
+    EXPECT_TRUE(read_cb_.is_null());
+    read_cb_ = read_cb;
+  }
+
+  MOCK_METHOD0(audio_decoder_config, AudioDecoderConfig());
+  MOCK_METHOD0(video_decoder_config, VideoDecoderConfig());
+  virtual Type type() OVERRIDE { return DemuxerStream::TEXT; }
+  MOCK_METHOD0(EnableBitstreamConverter, void());
+
+  // Local methods
+
+  MOCK_METHOD0(OnRead, void());
+
+  void SatisfyPendingRead(const base::TimeDelta& start,
+                          const base::TimeDelta& duration,
+                          const std::string& id,
+                          const std::string& content,
+                          const std::string& settings) {
+    EXPECT_FALSE(read_cb_.is_null());
+
+    const uint8* const data = reinterpret_cast<const uint8*>(content.data());
+
+    std::vector<uint8> side_data;
+    MakeSideData(id.begin(), id.end(),
+                 settings.begin(), settings.end(),
+                 &side_data);
+
+    scoped_refptr<DecoderBuffer> buffer;
+
+    buffer = DecoderBuffer::CopyFrom(data,
+                                     content.size(),
+                                     side_data.data(),
+                                     side_data.size());
+
+    buffer->set_timestamp(start);
+    buffer->set_duration(duration);
+
+    base::ResetAndReturn(&read_cb_).Run(kOk, buffer);
+  }
+
+  void AbortPendingRead() {
+    EXPECT_FALSE(read_cb_.is_null());
+    base::ResetAndReturn(&read_cb_).Run(kAborted, NULL);
+  }
+
+  void SendEosNotification() {
+    EXPECT_FALSE(read_cb_.is_null());
+    base::ResetAndReturn(&read_cb_).Run(kOk, DecoderBuffer::CreateEOSBuffer());
+  }
+
+  ReadCB read_cb_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TextTrackStream);
+};
+
+class TextRendererTest : public testing::Test {
+ public:
+  TextRendererTest() {}
+
+  void CreateTextRenderer() {
+    DCHECK(!text_renderer_);
+
+    text_renderer_.reset(
+        new TextRenderer(message_loop_.message_loop_proxy(),
+                         base::Bind(&TextRendererTest::OnAddTextTrack,
+                                    base::Unretained(this))));
+    text_renderer_->Initialize(base::Bind(&TextRendererTest::OnEnd,
+                                          base::Unretained(this)));
+  }
+
+  void DestroyTextRenderer() {
+    EXPECT_CALL(*this, OnStop());
+    text_renderer_->Stop(base::Bind(&TextRendererTest::OnStop,
+                                    base::Unretained(this)));
+    message_loop_.RunUntilIdle();
+
+    text_renderer_.reset();
+    text_track_streams_.clear();
+  }
+
+  void AddTextTrack(TextKind kind,
+                    const std::string& name,
+                    const std::string& language,
+                    bool expect_read) {
+    const size_t idx = text_track_streams_.size();
+    text_track_streams_.push_back(new TextTrackStream);
+
+    if (expect_read)
+      ExpectRead(idx);
+
+    const TextTrackConfig config(kind, name, language);
+    text_renderer_->AddTextStream(text_track_streams_.back(), config);
+    message_loop_.RunUntilIdle();
+
+    EXPECT_EQ(text_tracks_.size(), text_track_streams_.size());
+    FakeTextTrack* const text_track = text_tracks_.back();
+    EXPECT_TRUE(text_track);
+    EXPECT_TRUE(text_track->config_.Matches(config));
+  }
+
+  void OnAddTextTrack(const TextTrackConfig& config,
+                      const AddTextTrackDoneCB& done_cb) {
+    base::Closure destroy_cb =
+        base::Bind(&TextRendererTest::OnDestroyTextTrack,
+                   base::Unretained(this),
+                   text_tracks_.size());
+    scoped_ptr<FakeTextTrack> text_track(new FakeTextTrack(destroy_cb,
+                                                           config));
+    // text_track is owned by text renderer, but we cache it here so we
+    // can inspect it.  It gets removed from the cache when the text renderer
+    // deallocates it.
+    text_tracks_.push_back(text_track.get());
+    done_cb.Run(text_track.Pass());
+  }
+
+  void RemoveTextTrack(unsigned idx) {
+    TextTrackStream* const stream = text_track_streams_[idx];
+    text_renderer_->RemoveTextStream(stream);
+    EXPECT_FALSE(text_tracks_[idx]);
+  }
+
+  void SatisfyPendingReads(const base::TimeDelta& start,
+                           const base::TimeDelta& duration,
+                           const std::string& id,
+                           const std::string& content,
+                           const std::string& settings) {
+    for (TextTrackStreams::iterator itr = text_track_streams_.begin();
+         itr != text_track_streams_.end(); ++itr) {
+      (*itr)->SatisfyPendingRead(start, duration, id, content, settings);
+    }
+  }
+
+  void AbortPendingRead(unsigned idx) {
+    TextTrackStream* const stream = text_track_streams_[idx];
+    stream->AbortPendingRead();
+    message_loop_.RunUntilIdle();
+  }
+
+  void AbortPendingReads() {
+    for (unsigned idx = 0; idx < text_track_streams_.size(); ++idx) {
+      AbortPendingRead(idx);
+    }
+  }
+
+  void SendEosNotification(unsigned idx) {
+    TextTrackStream* const stream = text_track_streams_[idx];
+    stream->SendEosNotification();
+    message_loop_.RunUntilIdle();
+  }
+
+  void SendEosNotifications() {
+    for (unsigned idx = 0; idx < text_track_streams_.size(); ++idx) {
+      SendEosNotification(idx);
+    }
+  }
+
+  void SendCue(unsigned idx, bool expect_cue) {
+    TextTrackStream* const text_stream = text_track_streams_[idx];
+
+    const base::TimeDelta start;
+    const base::TimeDelta duration = base::TimeDelta::FromSeconds(42);
+    const std::string id = "id";
+    const std::string content = "subtitle";
+    const std::string settings;
+
+    if (expect_cue) {
+      FakeTextTrack* const text_track = text_tracks_[idx];
+      EXPECT_CALL(*text_track, addWebVTTCue(Eq(start),

[acolwell GONE FROM CHROMIUM, 2013/11/20 01:15:24]

nit: You shouldn't need the Eq on all the parameters. Is the compiler
complaining if you leave them off?

[Matthew Heaney (Chromium), 2013/11/20 19:23:16]

Done.

+                                            Eq(start + duration),
+                                            Eq(id),
+                                            Eq(content),
+                                            Eq(settings)))
+          .Times(Exactly(1));

[acolwell GONE FROM CHROMIUM, 2013/11/20 01:15:24]

nit: I don't think you should need the Times(Exactly(1)). I believe that is the
default for EXPECT_CALL().

[Matthew Heaney (Chromium), 2013/11/20 19:23:16]

Done.

+    }
+
+    text_stream->SatisfyPendingRead(start, duration, id, content, settings);
+    message_loop_.RunUntilIdle();
+  }
+
+  void SendCues(bool expect_cue) {
+    for (unsigned idx = 0; idx < text_track_streams_.size(); ++idx) {

[acolwell GONE FROM CHROMIUM, 2013/11/20 01:15:24]

nit: You should use size_t here and in other similar contexts in this file since
that is the actual type size() returns.

[Matthew Heaney (Chromium), 2013/11/20 19:23:16]

Done.

+      SendCue(idx, expect_cue);
+    }
+  }
+
+  void OnDestroyTextTrack(unsigned idx) {
+    text_tracks_[idx] = NULL;
+  }
+
+  void Play() {
+    EXPECT_CALL(*this, OnPlay());
+    text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                    base::Unretained(this)));
+    message_loop_.RunUntilIdle();
+  }
+
+  void Pause() {
+    text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                     base::Unretained(this)));
+    message_loop_.RunUntilIdle();
+  }
+
+  void Flush() {
+    EXPECT_CALL(*this, OnFlush());
+    text_renderer_->Flush(base::Bind(&TextRendererTest::OnFlush,
+                                     base::Unretained(this)));
+  }
+
+  void Stop() {
+    text_renderer_->Stop(base::Bind(&TextRendererTest::OnStop,
+                                    base::Unretained(this)));
+    message_loop_.RunUntilIdle();
+  }
+
+  void ExpectRead(unsigned idx) {
+    TextTrackStream* const stream = text_track_streams_[idx];
+    EXPECT_CALL(*stream, OnRead()).Times(1);

[acolwell GONE FROM CHROMIUM, 2013/11/20 01:15:24]

nit: Times(1) should be unnecessary.

[Matthew Heaney (Chromium), 2013/11/20 19:23:16]

Done.

+  }
+
+  MOCK_METHOD0(OnEnd, void());
+  MOCK_METHOD0(OnStop, void());
+  MOCK_METHOD0(OnPlay, void());
+  MOCK_METHOD0(OnPause, void());
+  MOCK_METHOD0(OnFlush, void());
+
+  scoped_ptr<TextRenderer> text_renderer_;
+  base::MessageLoop message_loop_;
+
+  typedef ScopedVector<TextTrackStream> TextTrackStreams;
+  TextTrackStreams text_track_streams_;
+
+  typedef std::vector<FakeTextTrack*> TextTracks;
+  TextTracks text_tracks_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TextRendererTest);
+};
+
+TEST_F(TextRendererTest, CreateTextRendererNoInit) {
+  text_renderer_.reset(
+      new TextRenderer(message_loop_.message_loop_proxy(),
+                       base::Bind(&TextRendererTest::OnAddTextTrack,
+                                  base::Unretained(this))));
+  text_renderer_.reset();
+}
+
+TEST_F(TextRendererTest, TestStop) {
+  CreateTextRenderer();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTextTrackOnly_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", false);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTextTrackOnly_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "track 1", "", false);
+  AddTextTrack(kTextSubtitles, "track 2", "", false);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayOnly) {
+  CreateTextRenderer();
+  Play();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlay_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  AbortPendingReads();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlay_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  AbortPendingReads();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlay_OneTrackAfter) {
+  CreateTextRenderer();
+  Play();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  AbortPendingReads();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlay_TwoTracksAfter) {
+  CreateTextRenderer();
+  Play();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  AbortPendingReads();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlay_OneTrackBeforeOneTrackAfter) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  Play();
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  AbortPendingReads();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayAddCue_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  ExpectRead(0);
+  SendCues(true);
+  AbortPendingReads();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayAddCue_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  ExpectRead(0);
+  ExpectRead(1);
+  SendCues(true);
+  AbortPendingReads();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosOnly_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosOnly_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCueEos_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  ExpectRead(0);
+  SendCues(true);
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCueEos_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  ExpectRead(0);
+  ExpectRead(1);
+  SendCues(true);
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, StopPending_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  Stop();
+  EXPECT_CALL(*this, OnStop());
+  SendEosNotifications();
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, StopPending_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Stop();
+  EXPECT_CALL(*this, OnStop());
+  SendEosNotifications();
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, PlayPause_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  AbortPendingReads();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayPause_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  AbortPendingReads();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPausePending_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  Pause();
+  EXPECT_CALL(*this, OnPause());
+  SendEosNotifications();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPausePending_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  EXPECT_CALL(*this, OnPause());
+  SendEosNotifications();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePending_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  Pause();
+  EXPECT_CALL(*this, OnPause());
+  SendCues(true);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePending_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  EXPECT_CALL(*this, OnPause());
+  SendCues(true);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause_SplitEos) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  SendEosNotification(0);
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosFlush_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  Flush();
+  ExpectRead(0);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosFlush_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  Flush();
+  ExpectRead(0);
+  ExpectRead(1);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTextTrackOnlyRemove_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", false);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTextTrackOnlyRemove_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "track 1", "", false);
+  AddTextTrack(kTextSubtitles, "track 2", "", false);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlayRemove_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  AbortPendingReads();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlayRemove_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  AbortPendingReads();
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlayRemove_SeparateCancel) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  AbortPendingRead(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  AbortPendingRead(1);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlayRemove_RemoveOneThenPlay) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", false);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  Play();
+  AbortPendingRead(1);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlayRemove_RemoveTwoThenPlay) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", false);
+  AddTextTrack(kTextSubtitles, "2", "", false);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  Play();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlayRemove_OneTrack) {
+  CreateTextRenderer();
+  Play();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  AbortPendingReads();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlayRemove_TwoTracks) {
+  CreateTextRenderer();
+  Play();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  AbortPendingReads();
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlayRemove_SplitCancel) {
+  CreateTextRenderer();
+  Play();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  AbortPendingRead(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  AbortPendingRead(1);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlayRemove_SplitAdd) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  Play();
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  AbortPendingRead(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  AbortPendingRead(1);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayAddCueRemove_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  ExpectRead(0);
+  SendCues(true);
+  AbortPendingReads();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayAddCueRemove_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  ExpectRead(0);
+  ExpectRead(1);
+  SendCues(true);
+  AbortPendingRead(0);
+  AbortPendingRead(1);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosOnlyRemove_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosOnlyRemove_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCueEosRemove_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  ExpectRead(0);
+  SendCues(true);
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCueEosRemove_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  ExpectRead(0);
+  ExpectRead(1);
+  SendCues(true);
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, TestStopPendingRemove_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  Stop();
+  EXPECT_CALL(*this, OnStop());
+  SendEosNotifications();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, TestStopPendingRemove_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Stop();
+  SendEosNotification(0);
+  EXPECT_CALL(*this, OnStop());
+  SendEosNotification(1);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, TestStopPendingRemove_RemoveThenSendEos) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Stop();
+  SendEosNotification(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnStop());
+  SendEosNotification(1);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, PlayPauseRemove_PauseThenRemove) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  AbortPendingReads();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayPauseRemove_RemoveThanPause) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  AbortPendingReads();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayPause_PauseThenRemoveTwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  AbortPendingReads();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayPauseRemove_RemoveThenPauseTwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  AbortPendingReads();
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayPauseRemove_SplitCancel) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  AbortPendingRead(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  AbortPendingRead(1);
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+
+TEST_F(TextRendererTest, PlayPauseRemove_PauseLast) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  AbortPendingRead(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  AbortPendingRead(1);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPausePendingRemove_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  Pause();
+  EXPECT_CALL(*this, OnPause());
+  SendEosNotifications();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPausePendingRemove_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  SendEosNotification(0);
+  EXPECT_CALL(*this, OnPause());
+  SendEosNotification(1);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPausePendingRemove_SplitEos) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  SendEosNotification(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnPause());
+  SendEosNotification(1);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePendingRemove_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  Pause();
+  EXPECT_CALL(*this, OnPause());
+  SendCues(true);
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePendingRemove_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  SendCue(0, true);
+  EXPECT_CALL(*this, OnPause());
+  SendCue(1, true);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePendingRemove_SplitSendCue) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  SendCue(0, true);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnPause());
+  SendCue(1, true);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPauseRemove_PauseThenRemove) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPauseRemove_RemoveThenPause) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause_PauseThenRemoveTwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  SendEosNotification(0);
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause_RemovePauseRemove) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  SendEosNotification(0);
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause_EosThenPause) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  SendEosNotification(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause_PauseLast) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  SendEosNotification(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause_EosPauseRemove) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  SendEosNotification(0);
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause_EosRemovePause) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  SendEosNotification(0);
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause_EosRemoveEosPause) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  SendEosNotification(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause_EosRemoveEosRemovePause) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  SendEosNotification(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosFlushRemove_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  Flush();
+  ExpectRead(0);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  RemoveTextTrack(0);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosFlushRemove_TwoTracks) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  Flush();
+  ExpectRead(0);
+  ExpectRead(1);
+  Play();
+  SendEosNotification(0);
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosFlushRemove_EosRemove) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  Flush();
+  ExpectRead(0);
+  ExpectRead(1);
+  Play();
+  SendEosNotification(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayShort_SendCueThenEos) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  SendCue(0, true);
+  EXPECT_CALL(*this, OnPause());
+  SendEosNotification(1);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayShort_EosThenSendCue) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  SendEosNotification(0);
+  EXPECT_CALL(*this, OnPause());
+  SendCue(1, true);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayShortRemove_SendEosRemove) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  SendCue(0, true);
+  EXPECT_CALL(*this, OnPause());
+  SendEosNotification(1);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayShortRemove_SendRemoveEos) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  SendCue(0, true);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnPause());
+  SendEosNotification(1);
+  RemoveTextTrack(1);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePendingCancel_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  Pause();
+  EXPECT_CALL(*this, OnPause());
+  AbortPendingRead(0);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePendingCancel_SendThenCancel) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  SendCue(0, true);
+  EXPECT_CALL(*this, OnPause());
+  AbortPendingRead(1);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePendingCancel_CancelThenSend) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  AbortPendingRead(0);
+  EXPECT_CALL(*this, OnPause());
+  SendCue(1, true);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCueStopPendingCancel_OneTrack) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  Pause();
+  Stop();
+  EXPECT_CALL(*this, OnStop());
+  AbortPendingRead(0);
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, PlayCueStopPendingCancel_SendThenCancel) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  Stop();
+  SendCue(0, false);
+  EXPECT_CALL(*this, OnStop());
+  AbortPendingRead(1);
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, PlayCueStopPendingCancel_CancelThenSend) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  Pause();
+  Stop();
+  AbortPendingRead(0);
+  EXPECT_CALL(*this, OnStop());
+  SendCue(1, false);
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, AddRemoveAdd) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  AbortPendingRead(0);
+  RemoveTextTrack(0);
+  EXPECT_CALL(*this, OnPause());
+  Pause();
+  AddTextTrack(kTextSubtitles, "", "", true);
+  Play();
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddRemoveEos) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  AbortPendingRead(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotification(1);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddRemovePause) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  AbortPendingRead(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  Pause();
+  EXPECT_CALL(*this, OnPause());
+  SendEosNotification(1);
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddRemovePauseStop) {
+  CreateTextRenderer();
+  AddTextTrack(kTextSubtitles, "1", "", true);
+  AddTextTrack(kTextSubtitles, "2", "", true);
+  Play();
+  AbortPendingRead(0);
+  RemoveTextTrack(0);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  Pause();
+  Stop();
+  EXPECT_CALL(*this, OnStop());
+  SendEosNotification(1);
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+}  // namespace media