Render inband text tracks in the media pipeline

media/base/text_renderer_unittest.cc

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.

[acolwell GONE FROM CHROMIUM, 2013/11/10 19:48:08]

nit: s/ (c)// New files are supposed to use a header w/o the (c).

[Matthew Heaney (Chromium), 2013/11/13 05:44:49]

Done.

+// 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::Invoke;
+using ::testing::_;
+
+namespace media {
+
+class TextRendererTest;
+class TextTrackTest;
+
+// To store the cue delivered by the text renderer, when it receives
+// a decoder buffer.
+struct TextCueTest {

[acolwell GONE FROM CHROMIUM, 2013/11/10 19:48:08]

This looks almost identical to the TextCue object. Use that instead.

[Matthew Heaney (Chromium), 2013/11/13 05:44:49]

Done.

+  base::TimeDelta start_;
+  base::TimeDelta end_;
+  std::string id_;
+  std::string content_;
+  std::string settings_;
+
+  TextCueTest(const base::TimeDelta& start,
+              const base::TimeDelta& end,
+              const std::string& id,
+              const std::string& content,
+              const std::string& settings)
+      : start_(start),
+        end_(end),
+        id_(id),
+        content_(content),
+        settings_(settings) {
+  }
+};
+
+// Grant last wishes to the TextTrackTest object.
+void RemoveTextTrackTest(TextRendererTest* text_renderer_test,
+                         TextTrackTest* text_track);
+
+// A local implementation of the TextTrack interface.  It simply
+// stores the cue(s) delivered by the text renderer, allowing the
+// this test framework to compare the cue received to the cue
+// pushed downstream.
+class TextTrackTest : public TextTrack {

[acolwell GONE FROM CHROMIUM, 2013/11/10 19:48:08]

nit:s/TextTrackTest/FakeTextTrack/ since this is actually a fake implementation
and not a test for TextTrack.

[Matthew Heaney (Chromium), 2013/11/13 05:44:49]

Done.

+ public:
+  TextTrackTest(TextRendererTest* text_renderer_test,
+                unsigned idx,
+                const TextTrackConfig& config)
+      : text_renderer_test_(text_renderer_test),
+        index_(idx),
+        config_(config) {
+  }
+  virtual ~TextTrackTest() {
+    RemoveTextTrackTest(text_renderer_test_, this);

[acolwell GONE FROM CHROMIUM, 2013/11/10 19:48:08]

Pass a Closure into the constructor instead so this class doesn't need to know
about the test and you don't have to do the forward decls or need the
intermediary function.

[Matthew Heaney (Chromium), 2013/11/13 05:44:49]

Done.

+  }
+  virtual void addWebVTTCue(const base::TimeDelta& start,
+                            const base::TimeDelta& end,
+                            const std::string& id,
+                            const std::string& content,
+                            const std::string& settings) OVERRIDE {
+    cues_.push_back(TextCueTest(start, end, id, content, settings));
+  }
+
+  TextRendererTest* const text_renderer_test_;
+
+  // Index of this TextTrack object in the vector of such objects
+  // maintained by the TextRendererTest object.
+  const unsigned index_;
+
+  const TextTrackConfig config_;
+
+  typedef std::vector<TextCueTest> Cues;
+  Cues cues_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TextTrackTest);
+};
+
+// 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 {
+ public:
+  TextTrackStream()
+      : message_loop_(base::MessageLoopProxy::current()) {
+  }
+  virtual ~TextTrackStream() {
+    DCHECK(read_cb_.is_null());
+  }
+
+  // DemuxerStream implementation.
+  MOCK_METHOD1(Read, void(const ReadCB&));
+  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
+
+  void DoRead(const ReadCB& read_cb) {
+    EXPECT_FALSE(read_cb.is_null());
+    EXPECT_TRUE(read_cb_.is_null());
+    read_cb_ = read_cb;
+  }
+
+  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());
+  }
+
+  scoped_refptr<base::MessageLoopProxy> message_loop_;

[acolwell GONE FROM CHROMIUM, 2013/11/10 19:48:08]

Why do you need this? It doesn't look like you are using it in this class.

[Matthew Heaney (Chromium), 2013/11/13 05:44:49]

Done.

+  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();
+  }
+
+  TextTrackStream* CreateTextTrack() {
+    text_track_streams_.push_back(new TextTrackStream);
+    return text_track_streams_.back();
+  }
+
+  void AddTextTrack(TextKind kind,
+                    const std::string& name,
+                    const std::string& language) {
+    EXPECT_CALL(*this, OnAddTextTrack(_,_))
+        .WillOnce(Invoke(this, &TextRendererTest::DoAddTextTrack));
+
+    const TextTrackConfig config(kind, name, language);
+    text_renderer_->AddTextStream(text_track_streams_.back(), config);
+    message_loop_.RunUntilIdle();
+
+    EXPECT_FALSE(text_tracks_.empty());
+    TextTrackTest* const text_track = text_tracks_.back();
+    EXPECT_TRUE(text_track->config_.Matches(config));
+  }
+
+  MOCK_METHOD2(OnAddTextTrack, void(const TextTrackConfig&,
+                                    const AddTextTrackDoneCB&));
+
+  void DoAddTextTrack(const TextTrackConfig& config,
+                      const AddTextTrackDoneCB& done_cb) {
+    const unsigned idx = text_tracks_.size();
+    scoped_ptr<TextTrackTest> text_track(new TextTrackTest(this,
+                                                           idx,
+                                                           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 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 AbortPendingReads() {
+    for (TextTrackStreams::iterator itr = text_track_streams_.begin();
+         itr != text_track_streams_.end(); ++itr) {
+      (*itr)->AbortPendingRead();
+    }
+  }
+
+  void SendEosNotifications() {
+    for (TextTrackStreams::iterator itr = text_track_streams_.begin();
+         itr != text_track_streams_.end(); ++itr) {
+      (*itr)->SendEosNotification();
+    }
+  }
+
+  void SendCues(bool expect_cue) {
+    DCHECK(text_track_streams_.size() == text_tracks_.size());
+
+    const base::TimeDelta start;
+    const base::TimeDelta duration = base::TimeDelta::FromSeconds(42);
+    std::string id = "stratford-on-guy";
+    std::string content = "Yo Yo Buddy Yup Yup Word To Ya Muthuh";
+    std::string settings = "";
+    SatisfyPendingReads(start, duration, id, content, settings);
+
+    message_loop_.RunUntilIdle();
+
+    for (TextTracks::iterator itr = text_tracks_.begin();
+         itr != text_tracks_.end(); ++itr) {
+      TextTrackTest* const text_track = *itr;
+
+      TextTrackTest::Cues& cues = text_track->cues_;
+
+      if (cues.empty()) {
+        EXPECT_FALSE(expect_cue);
+        continue;
+      }
+
+      EXPECT_TRUE(expect_cue);
+      ASSERT_EQ(cues.size(), 1);
+
+      TextCueTest& cue = cues.back();
+      EXPECT_EQ(cue.start_, start);
+      EXPECT_EQ(cue.end_, start + duration);
+      EXPECT_EQ(cue.id_, id);
+      EXPECT_EQ(cue.content_, content);
+      EXPECT_EQ(cue.settings_, settings);
+    }
+  }
+
+  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);
+    std::string id = "Dance Of The Seven Veils";
+    std::string content = "Girly Sound";

[acolwell GONE FROM CHROMIUM, 2013/11/10 19:48:08]

nit: I think we should have more neutral test text here and above.

[Matthew Heaney (Chromium), 2013/11/13 05:44:49]

Done.

+    std::string settings = "";
+    text_stream->SatisfyPendingRead(start, duration, id, content, settings);
+
+    message_loop_.RunUntilIdle();
+
+    TextTrackTest* const text_track = text_tracks_[idx];
+
+    TextTrackTest::Cues& cues = text_track->cues_;

[acolwell GONE FROM CHROMIUM, 2013/11/10 19:48:08]

Do you really need to keep the cues around? It seems like you could just change
addWebVTTCue() to a mock function and then just construct the appropriate
EXPECT_CALL w/ all the expectations.

[Matthew Heaney (Chromium), 2013/11/13 05:44:49]

Done.

+
+    if (cues.empty()) {
+      EXPECT_FALSE(expect_cue);
+      return;
+    }
+
+    EXPECT_TRUE(expect_cue);
+    ASSERT_EQ(cues.size(), 1);
+
+    TextCueTest& cue = cues.back();
+    EXPECT_EQ(cue.start_, start);
+    EXPECT_EQ(cue.end_, start + duration);
+    EXPECT_EQ(cue.id_, id);
+    EXPECT_EQ(cue.content_, content);
+    EXPECT_EQ(cue.settings_, settings);
+  }

[acolwell GONE FROM CHROMIUM, 2013/11/10 19:48:08]

To avoid duplicate code, it seems like SendCues() should be written in terms of
SendCue().

[Matthew Heaney (Chromium), 2013/11/13 05:44:49]

Done.

+
+  void RemoveTextTrackTest(TextTrackTest* text_track_test) {
+    const unsigned idx = text_track_test->index_;
+    DCHECK(text_tracks_[idx] == text_track_test);
+    text_tracks_[idx] = NULL;
+  }
+
+  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<TextTrackTest*> TextTracks;
+  TextTracks text_tracks_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TextRendererTest);
+};
+
+void RemoveTextTrackTest(TextRendererTest* text_renderer_test,
+                         TextTrackTest* text_track) {
+  text_renderer_test->RemoveTextTrackTest(text_track);
+}
+
+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) {
+  CreateTextRenderer();
+  CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTextTracks2Only) {
+  CreateTextRenderer();
+  CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "track 1", "");
+  CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "track 2", "");
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayOnly) {
+  CreateTextRenderer();
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlay) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))

[acolwell GONE FROM CHROMIUM, 2013/11/10 19:48:08]

I think it might be better if you change DoRead() into Read() so you don't have
to do these Invoke() calls everywhere. You could then just add a bool
IsReadPending const { return !read_cb_.is_null(); } method to provide a way to
check for pending reads when necessary. In many cases you may not even need this
 because the XXXPendingRead() helpers are already checking for a valid callback.

I believe doing this will also allow you to merge CreateTextTrack() and
AddTextTrack().

[Matthew Heaney (Chromium), 2013/11/13 05:44:49]

Done.

+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();

[acolwell GONE FROM CHROMIUM, 2013/11/10 19:48:08]

nit: In almost all cases where Play() is called it is followed by a
RunUntilIdle(). Please put this common sequences in a Play() helper function to
help reduce the clutter. Do this for Pause and other cases where this also
applies.

[Matthew Heaney (Chromium), 2013/11/13 05:44:49]

Done.

+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlay2) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlay) {
+  CreateTextRenderer();
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "", "");
+
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlay2A) {
+  CreateTextRenderer();
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlay2B) {

[acolwell GONE FROM CHROMIUM, 2013/11/10 19:48:08]

nit: Typically when we have variants of the same test we use an _ & and
descriptive name to differentiate the test case. For example
AddTrackAfterPlay_FirstTrackAddedBeforePlay for this test and
AddTrackAfterPlay_TwoTracksAddedAfterPlay. This makes it easier to understand
what is being tested. Please fix this and any other similar instances below.

[Matthew Heaney (Chromium), 2013/11/13 05:44:49]

Done.

+  CreateTextRenderer();
+
+  EXPECT_CALL(*this, OnPlay());
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayAddCue) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCues(true);
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayAddCue2) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCues(true);
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosOnly) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosOnly2) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCueEos) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCues(true);
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCueEos2) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream_2, &TextTrackStream::DoRead));
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCues(true);
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, TestStopPending) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Stop(base::Bind(&TextRendererTest::OnStop,
+                                  base::Unretained(this)));
+
+  EXPECT_CALL(*this, OnStop());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, TestStopPending2) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Stop(base::Bind(&TextRendererTest::OnStop,
+                                  base::Unretained(this)));
+
+  EXPECT_CALL(*this, OnStop());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, PlayPause) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayPause2) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPausePending) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPausePending2) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePending) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  SendCues(true);
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePending2) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  SendCues(true);
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause2A) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause2B) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosFlush) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnFlush());
+  text_renderer_->Flush(base::Bind(&TextRendererTest::OnFlush,
+                                   base::Unretained(this)));
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosFlush2) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnFlush());
+  text_renderer_->Flush(base::Bind(&TextRendererTest::OnFlush,
+                                   base::Unretained(this)));
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTextTrackOnlyRemove) {
+  CreateTextRenderer();
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTextTracks2OnlyRemove) {
+  CreateTextRenderer();
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "track 1", "");
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "track 2", "");
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlayRemove) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlay2RemoveA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlay2RemoveB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_stream_2->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlay2RemoveC) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_2->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackBeforePlay2RemoveD) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlayRemove) {
+  CreateTextRenderer();
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "", "");
+
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlay2ARemoveA) {
+  CreateTextRenderer();
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlay2ARemoveB) {
+  CreateTextRenderer();
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_stream_2->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddTrackAfterPlay2BRemove) {
+  CreateTextRenderer();
+
+  EXPECT_CALL(*this, OnPlay());
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_stream_2->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayAddCueRemove) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCues(true);
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayAddCue2Remove) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCues(true);
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_stream_2->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosOnlyRemove) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosOnly2Remove) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCueEosRemove) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCues(true);
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCueEos2Remove) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .Times(2)
+      .WillRepeatedly(Invoke(text_stream_2, &TextTrackStream::DoRead));
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCues(true);
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, TestStopPendingRemove) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Stop(base::Bind(&TextRendererTest::OnStop,
+                                  base::Unretained(this)));
+
+  EXPECT_CALL(*this, OnStop());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, TestStopPending2RemoveA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Stop(base::Bind(&TextRendererTest::OnStop,
+                                  base::Unretained(this)));
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnStop());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, TestStopPending2RemoveB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Stop(base::Bind(&TextRendererTest::OnStop,
+                                  base::Unretained(this)));
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnStop());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, PlayPauseRemoveA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayPauseRemoveB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayPause2RemoveA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  AbortPendingReads();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayPause2RemoveB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_stream_2->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayPause2RemoveC) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_stream_2->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayPause2RemoveD) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_stream_2->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPausePendingRemove) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPausePending2RemoveA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPausePending2RemoveB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPause());
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePendingRemove) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  SendCues(true);
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePending2RemoveA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCue(0, true);
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  SendCue(1, true);
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePending2RemoveB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCue(0, true);
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPause());
+  SendCue(1, true);
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPauseRemoveA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPauseRemoveB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause2ARemoveA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause2ARemoveB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause2ARemoveC) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause2ARemoveD) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause2BRemoveA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause2BRemoveB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause2BRemoveC) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosPause2BRemoveD) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosFlushRemove) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnFlush());
+  text_renderer_->Flush(base::Bind(&TextRendererTest::OnFlush,
+                                   base::Unretained(this)));
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosFlush2RemoveA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnFlush());
+  text_renderer_->Flush(base::Bind(&TextRendererTest::OnFlush,
+                                   base::Unretained(this)));
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayEosFlush2RemoveB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  SendEosNotifications();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnFlush());
+  text_renderer_->Flush(base::Bind(&TextRendererTest::OnFlush,
+                                   base::Unretained(this)));
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayShort2A) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCue(0, true);
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayShort2B) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  SendCue(1, true);
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayShort2RemoveA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCue(0, true);
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayShort2RemoveB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCue(0, true);
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  EXPECT_FALSE(text_tracks_[0]);
+  EXPECT_TRUE(text_renderer_->HasTracks());
+
+  EXPECT_CALL(*this, OnPause());
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_2);
+  EXPECT_FALSE(text_tracks_[1]);
+  EXPECT_FALSE(text_renderer_->HasTracks());
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePendingCancel) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_stream->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePending2CancelA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCue(0, true);
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  text_stream_2->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCuePausePending2CancelB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  SendCue(1, true);
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, PlayCueStopPendingCancel) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*this, OnPlay());
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Stop(base::Bind(&TextRendererTest::OnStop,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnStop());
+  text_stream->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, PlayCueStopPending2CancelA) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Stop(base::Bind(&TextRendererTest::OnStop,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  SendCue(0, false);
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnStop());
+  text_stream_2->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, PlayCueStopPending2CancelB) {
+  CreateTextRenderer();
+
+  TextTrackStream* const text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* const text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Stop(base::Bind(&TextRendererTest::OnStop,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnStop());
+  SendCue(1, false);
+  message_loop_.RunUntilIdle();
+
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+TEST_F(TextRendererTest, AddRemoveAdd) {
+  CreateTextRenderer();
+
+  TextTrackStream* text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream);
+  text_track_streams_.clear();
+
+  EXPECT_CALL(*this, OnPause());
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "", "");
+
+  EXPECT_CALL(*text_stream, Read(_))
+      .WillOnce(Invoke(text_stream, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddRemoveAdd2A) {
+  CreateTextRenderer();
+
+  TextTrackStream* text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  text_track_streams_.erase(text_track_streams_.begin());
+
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddRemoveAdd2B) {
+  CreateTextRenderer();
+
+  TextTrackStream* text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  text_track_streams_.erase(text_track_streams_.begin());
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnPause());
+  EXPECT_CALL(*this, OnEnd());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  DestroyTextRenderer();
+}
+
+TEST_F(TextRendererTest, AddRemoveAdd2C) {
+  CreateTextRenderer();
+
+  TextTrackStream* text_stream_1 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "1", "");
+
+  EXPECT_CALL(*text_stream_1, Read(_))
+      .WillOnce(Invoke(text_stream_1, &TextTrackStream::DoRead));
+
+  TextTrackStream* text_stream_2 = CreateTextTrack();
+  AddTextTrack(kTextSubtitles, "2", "");
+
+  EXPECT_CALL(*text_stream_2, Read(_))
+      .WillOnce(Invoke(text_stream_2, &TextTrackStream::DoRead));
+
+  EXPECT_CALL(*this, OnPlay());
+
+  text_renderer_->Play(base::Bind(&TextRendererTest::OnPlay,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_stream_1->AbortPendingRead();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->RemoveTextStream(text_stream_1);
+  text_track_streams_.erase(text_track_streams_.begin());
+
+  text_renderer_->Pause(base::Bind(&TextRendererTest::OnPause,
+                                   base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  text_renderer_->Stop(base::Bind(&TextRendererTest::OnStop,
+                                  base::Unretained(this)));
+  message_loop_.RunUntilIdle();
+
+  EXPECT_CALL(*this, OnStop());
+  text_stream_2->SendEosNotification();
+  message_loop_.RunUntilIdle();
+
+  text_renderer_.reset();
+  text_track_streams_.clear();
+}
+
+}  // namespace media