Improve and simplify AudioOutputDispatcher.

media/audio/audio_output_proxy_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <string>
 
 #include "base/message_loop/message_loop.h"
 #include "base/message_loop/message_loop_proxy.h"
+#include "base/run_loop.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/audio_manager_base.h"
 #include "media/audio/audio_output_dispatcher_impl.h"
 #include "media/audio/audio_output_proxy.h"
 #include "media/audio/audio_output_resampler.h"
 #include "media/audio/fake_audio_output_stream.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::_;
@@ skipping 10 matching lines @@
 using media::AudioManager;
 using media::AudioManagerBase;
 using media::AudioOutputDispatcher;
 using media::AudioOutputProxy;
 using media::AudioOutputStream;
 using media::AudioParameters;
 using media::FakeAudioOutputStream;
 
 namespace {
 
-static const int kTestCloseDelayMs = 100;
-
-// Used in the test where we don't want a stream to be closed unexpectedly.
-static const int kTestBigCloseDelaySeconds = 1000;
+static const int kTestCloseDelayMs = 10;
 
 // Delay between callbacks to AudioSourceCallback::OnMoreData.
 static const int kOnMoreDataCallbackDelayMs = 10;
 
 // Let start run long enough for many OnMoreData callbacks to occur.
 static const int kStartRunTimeMs = kOnMoreDataCallbackDelayMs * 10;
 
 class MockAudioOutputStream : public AudioOutputStream {
  public:
   MockAudioOutputStream(AudioManagerBase* manager,
@@ skipping 85 matching lines @@
 
 }  // namespace
 
 namespace media {
 
 class AudioOutputProxyTest : public testing::Test {
  protected:
   virtual void SetUp() {
     EXPECT_CALL(manager_, GetMessageLoop())
         .WillRepeatedly(Return(message_loop_.message_loop_proxy()));
+    // Use a low sample rate and large buffer size when testing otherwise the
+    // FakeAudioOutputStream will keep the message loop busy indefinitely; i.e.,
+    // RunUntilIdle() will never terminate.
+    params_ = AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
+                              CHANNEL_LAYOUT_STEREO, 8000, 16, 2048);
     InitDispatcher(base::TimeDelta::FromMilliseconds(kTestCloseDelayMs));
   }
 
   virtual void TearDown() {
-    // All paused proxies should have been closed at this point.
-    EXPECT_EQ(0u, dispatcher_impl_->paused_proxies_);
-
     // This is necessary to free all proxy objects that have been
     // closed by the test.
     message_loop_.RunUntilIdle();
   }
 
   virtual void InitDispatcher(base::TimeDelta close_delay) {
-    // Use a low sample rate and large buffer size when testing otherwise the
-    // FakeAudioOutputStream will keep the message loop busy indefinitely; i.e.,
-    // RunUntilIdle() will never terminate.
-    params_ = AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
-                              CHANNEL_LAYOUT_STEREO, 8000, 16, 2048);
     dispatcher_impl_ = new AudioOutputDispatcherImpl(&manager(),
                                                      params_,
                                                      std::string(),
                                                      std::string(),
                                                      close_delay);
-
-    // Necessary to know how long the dispatcher will wait before posting
-    // StopStreamTask.
-    pause_delay_ = dispatcher_impl_->pause_delay_;
   }
 
   virtual void OnStart() {}
 
   MockAudioManager& manager() {
     return manager_;
   }
 
-  // Wait for the close timer to fire.
-  void WaitForCloseTimer(const int timer_delay_ms) {
-    message_loop_.RunUntilIdle();  // OpenTask() may reset the timer.
-    base::PlatformThread::Sleep(
-        base::TimeDelta::FromMilliseconds(timer_delay_ms) * 2);
-    message_loop_.RunUntilIdle();
+  void WaitForCloseTimer(MockAudioOutputStream* stream) {
+    base::RunLoop run_loop;
+    EXPECT_CALL(*stream, Close())
+        .WillOnce(testing::InvokeWithoutArgs(&run_loop, &base::RunLoop::Quit));
+    run_loop.Run();
   }
 
-  // Methods that do actual tests.
+  void CloseAndWaitForCloseTimer(AudioOutputProxy* proxy,
+                                 MockAudioOutputStream* stream) {
+    // Close the stream and verify it doesn't happen immediately.
+    proxy->Close();
+    Mock::VerifyAndClear(stream);
+
+    // Wait for the actual close event to come from the close timer.
+    WaitForCloseTimer(stream);
+  }
+
+  // Basic Open() and Close() test.
   void OpenAndClose(AudioOutputDispatcher* dispatcher) {
     MockAudioOutputStream stream(&manager_, params_);
 
     EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
         .WillOnce(Return(&stream));
     EXPECT_CALL(stream, Open())
         .WillOnce(Return(true));
-    EXPECT_CALL(stream, Close())
-        .Times(1);
 
     AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
     EXPECT_TRUE(proxy->Open());
-    proxy->Close();
-    WaitForCloseTimer(kTestCloseDelayMs);
+    CloseAndWaitForCloseTimer(proxy, &stream);
   }
 
-  // Create a stream, and then calls Start() and Stop().
+  // Creates a stream, and then calls Start() and Stop().
   void StartAndStop(AudioOutputDispatcher* dispatcher) {
     MockAudioOutputStream stream(&manager_, params_);
 
     EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
         .WillOnce(Return(&stream));
     EXPECT_CALL(stream, Open())
         .WillOnce(Return(true));
     EXPECT_CALL(stream, SetVolume(_))
         .Times(1);
-    EXPECT_CALL(stream, Close())
-        .Times(1);
 
     AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
     EXPECT_TRUE(proxy->Open());
 
     proxy->Start(&callback_);
     OnStart();
     proxy->Stop();
 
-    proxy->Close();
-    WaitForCloseTimer(kTestCloseDelayMs);
+    CloseAndWaitForCloseTimer(proxy, &stream);
     EXPECT_TRUE(stream.stop_called());
     EXPECT_TRUE(stream.start_called());
   }
 
-  // Verify that the stream is closed after Stop is called.
+  // Verify that the stream is closed after Stop() is called.
   void CloseAfterStop(AudioOutputDispatcher* dispatcher) {
     MockAudioOutputStream stream(&manager_, params_);
 
     EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
         .WillOnce(Return(&stream));
     EXPECT_CALL(stream, Open())
         .WillOnce(Return(true));
     EXPECT_CALL(stream, SetVolume(_))
         .Times(1);
-    EXPECT_CALL(stream, Close())
-        .Times(1);
 
     AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
     EXPECT_TRUE(proxy->Open());
 
     proxy->Start(&callback_);
     OnStart();
     proxy->Stop();
 
-    // Wait for StopStream() to post StopStreamTask().
-    base::PlatformThread::Sleep(pause_delay_ * 2);
-    WaitForCloseTimer(kTestCloseDelayMs);
-
-    // Verify expectation before calling Close().
-    Mock::VerifyAndClear(&stream);
-
+    // Wait for the close timer to fire after StopStream().
+    WaitForCloseTimer(&stream);
     proxy->Close();
     EXPECT_TRUE(stream.stop_called());
     EXPECT_TRUE(stream.start_called());
   }
 
-  // Create two streams, but don't start them. Only one device must be open.
+  // Create two streams, but don't start them.  Only one device must be opened.
   void TwoStreams(AudioOutputDispatcher* dispatcher) {
     MockAudioOutputStream stream(&manager_, params_);
 
     EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
         .WillOnce(Return(&stream));
     EXPECT_CALL(stream, Open())
         .WillOnce(Return(true));
-    EXPECT_CALL(stream, Close())
-        .Times(1);
 
     AudioOutputProxy* proxy1 = new AudioOutputProxy(dispatcher);
     AudioOutputProxy* proxy2 = new AudioOutputProxy(dispatcher);
     EXPECT_TRUE(proxy1->Open());
     EXPECT_TRUE(proxy2->Open());
     proxy1->Close();
-    proxy2->Close();
-    WaitForCloseTimer(kTestCloseDelayMs);
+    CloseAndWaitForCloseTimer(proxy2, &stream);
     EXPECT_FALSE(stream.stop_called());
     EXPECT_FALSE(stream.start_called());
   }
 
   // Open() method failed.
   void OpenFailed(AudioOutputDispatcher* dispatcher) {
     MockAudioOutputStream stream(&manager_, params_);
 
     EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
         .WillOnce(Return(&stream));
     EXPECT_CALL(stream, Open())
         .WillOnce(Return(false));
     EXPECT_CALL(stream, Close())
         .Times(1);
 
     AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
     EXPECT_FALSE(proxy->Open());
     proxy->Close();
-    WaitForCloseTimer(kTestCloseDelayMs);
     EXPECT_FALSE(stream.stop_called());
     EXPECT_FALSE(stream.start_called());
   }
 
   void CreateAndWait(AudioOutputDispatcher* dispatcher) {
     MockAudioOutputStream stream(&manager_, params_);
 
     EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
         .WillOnce(Return(&stream));
     EXPECT_CALL(stream, Open())
         .WillOnce(Return(true));
-    EXPECT_CALL(stream, Close())
-        .Times(1);
 
     AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
     EXPECT_TRUE(proxy->Open());
 
-    // Simulate a delay.
-    base::PlatformThread::Sleep(
-        base::TimeDelta::FromMilliseconds(kTestCloseDelayMs) * 2);
-    message_loop_.RunUntilIdle();
-
-    // Verify expectation before calling Close().
-    Mock::VerifyAndClear(&stream);
-
+    WaitForCloseTimer(&stream);
     proxy->Close();
     EXPECT_FALSE(stream.stop_called());
     EXPECT_FALSE(stream.start_called());
   }
 
-  void TwoStreams_OnePlaying(AudioOutputDispatcher* dispatcher) {
-    MockAudioOutputStream stream1(&manager_, params_);
-    MockAudioOutputStream stream2(&manager_, params_);
+  void OneStream_TwoPlays(AudioOutputDispatcher* dispatcher) {
+    MockAudioOutputStream stream(&manager_, params_);
 
     EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
-        .WillOnce(Return(&stream1))
-        .WillOnce(Return(&stream2));
+        .WillOnce(Return(&stream));
 
-    EXPECT_CALL(stream1, Open())
+    EXPECT_CALL(stream, Open())
         .WillOnce(Return(true));
-    EXPECT_CALL(stream1, SetVolume(_))
-        .Times(1);
-    EXPECT_CALL(stream1, Close())
-        .Times(1);
-
-    EXPECT_CALL(stream2, Open())
-        .WillOnce(Return(true));
-    EXPECT_CALL(stream2, Close())
-        .Times(1);
+    EXPECT_CALL(stream, SetVolume(_))
+        .Times(2);
 
     AudioOutputProxy* proxy1 = new AudioOutputProxy(dispatcher);
-    AudioOutputProxy* proxy2 = new AudioOutputProxy(dispatcher);
     EXPECT_TRUE(proxy1->Open());
-    EXPECT_TRUE(proxy2->Open());
 
     proxy1->Start(&callback_);
-    message_loop_.RunUntilIdle();
     OnStart();
     proxy1->Stop();
 
+    // The stream should now be idle and get reused by |proxy2|.
+    AudioOutputProxy* proxy2 = new AudioOutputProxy(dispatcher);
+    EXPECT_TRUE(proxy2->Open());
+    proxy2->Start(&callback_);
+    OnStart();
+    proxy2->Stop();
+
     proxy1->Close();
-    proxy2->Close();
-    EXPECT_TRUE(stream1.stop_called());
-    EXPECT_TRUE(stream1.start_called());
-    EXPECT_FALSE(stream2.stop_called());
-    EXPECT_FALSE(stream2.start_called());
+    CloseAndWaitForCloseTimer(proxy2, &stream);
+    EXPECT_TRUE(stream.stop_called());
+    EXPECT_TRUE(stream.start_called());
   }
 
   void TwoStreams_BothPlaying(AudioOutputDispatcher* dispatcher) {
     MockAudioOutputStream stream1(&manager_, params_);
     MockAudioOutputStream stream2(&manager_, params_);
 
     EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
         .WillOnce(Return(&stream1))
         .WillOnce(Return(&stream2));
 
     EXPECT_CALL(stream1, Open())
         .WillOnce(Return(true));
     EXPECT_CALL(stream1, SetVolume(_))
         .Times(1);
-    EXPECT_CALL(stream1, Close())
-        .Times(1);
 
     EXPECT_CALL(stream2, Open())
         .WillOnce(Return(true));
     EXPECT_CALL(stream2, SetVolume(_))
         .Times(1);
-    EXPECT_CALL(stream2, Close())
-        .Times(1);
 
     AudioOutputProxy* proxy1 = new AudioOutputProxy(dispatcher);
     AudioOutputProxy* proxy2 = new AudioOutputProxy(dispatcher);
     EXPECT_TRUE(proxy1->Open());
     EXPECT_TRUE(proxy2->Open());
 
     proxy1->Start(&callback_);
     proxy2->Start(&callback_);
     OnStart();
     proxy1->Stop();
+    CloseAndWaitForCloseTimer(proxy1, &stream1);
+
     proxy2->Stop();
+    CloseAndWaitForCloseTimer(proxy2, &stream2);
 
-    proxy1->Close();
-    proxy2->Close();
     EXPECT_TRUE(stream1.stop_called());
     EXPECT_TRUE(stream1.start_called());
     EXPECT_TRUE(stream2.stop_called());
     EXPECT_TRUE(stream2.start_called());
   }
 
   void StartFailed(AudioOutputDispatcher* dispatcher) {
     MockAudioOutputStream stream(&manager_, params_);
 
     EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
         .WillOnce(Return(&stream));
     EXPECT_CALL(stream, Open())
         .WillOnce(Return(true));
-    EXPECT_CALL(stream, Close())
-        .Times(1);
 
     AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
     EXPECT_TRUE(proxy->Open());
 
-    // Simulate a delay.
-    base::PlatformThread::Sleep(
-        base::TimeDelta::FromMilliseconds(kTestCloseDelayMs) * 2);
-    message_loop_.RunUntilIdle();
-
-    // Verify expectation before calling Close().
-    Mock::VerifyAndClear(&stream);
+    WaitForCloseTimer(&stream);
 
     // |stream| is closed at this point. Start() should reopen it again.
     EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
         .Times(2)
         .WillRepeatedly(Return(reinterpret_cast<AudioOutputStream*>(NULL)));
 
     EXPECT_CALL(callback_, OnError(_))
         .Times(2);
 
     proxy->Start(&callback_);
 
     // Double Start() in the error case should be allowed since it's possible a
     // callback may not have had time to process the OnError() in between.
     proxy->Stop();
     proxy->Start(&callback_);
 
     Mock::VerifyAndClear(&callback_);
 
     proxy->Close();
   }
 
   base::MessageLoop message_loop_;
   scoped_refptr<AudioOutputDispatcherImpl> dispatcher_impl_;
-  base::TimeDelta pause_delay_;
   MockAudioManager manager_;
   MockAudioSourceCallback callback_;
   AudioParameters params_;
 };
 
 class AudioOutputResamplerTest : public AudioOutputProxyTest {
  public:
   virtual void TearDown() {
     AudioOutputProxyTest::TearDown();
   }
 
   virtual void InitDispatcher(base::TimeDelta close_delay) OVERRIDE {
-    AudioOutputProxyTest::InitDispatcher(close_delay);
     // Use a low sample rate and large buffer size when testing otherwise the
     // FakeAudioOutputStream will keep the message loop busy indefinitely; i.e.,
     // RunUntilIdle() will never terminate.
     resampler_params_ = AudioParameters(
         AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_STEREO,
         16000, 16, 1024);
     resampler_ = new AudioOutputResampler(
         &manager(), params_, resampler_params_, std::string(), std::string(),
         close_delay);
   }
 
   virtual void OnStart() OVERRIDE {
-    // Let start run for a bit.
-    message_loop_.RunUntilIdle();
-    base::PlatformThread::Sleep(
+    // Let Start() run for a bit.
+    base::RunLoop run_loop;
+    message_loop_.PostDelayedTask(
+        FROM_HERE,
+        run_loop.QuitClosure(),
         base::TimeDelta::FromMilliseconds(kStartRunTimeMs));
+    run_loop.Run();
   }
 
  protected:
   AudioParameters resampler_params_;
   scoped_refptr<AudioOutputResampler> resampler_;
 };
 
 TEST_F(AudioOutputProxyTest, CreateAndClose) {
-  AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher_impl_.get());
+  AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher_impl_);
   proxy->Close();
 }
 
 TEST_F(AudioOutputResamplerTest, CreateAndClose) {
-  AudioOutputProxy* proxy = new AudioOutputProxy(resampler_.get());
+  AudioOutputProxy* proxy = new AudioOutputProxy(resampler_);
   proxy->Close();
 }
 
 TEST_F(AudioOutputProxyTest, OpenAndClose) {
-  OpenAndClose(dispatcher_impl_.get());
+  OpenAndClose(dispatcher_impl_);
 }
 
 TEST_F(AudioOutputResamplerTest, OpenAndClose) {
-  OpenAndClose(resampler_.get());
+  OpenAndClose(resampler_);
 }
 
 // Create a stream, and verify that it is closed after kTestCloseDelayMs.
 // if it doesn't start playing.
 TEST_F(AudioOutputProxyTest, CreateAndWait) {
-  CreateAndWait(dispatcher_impl_.get());
+  CreateAndWait(dispatcher_impl_);
 }
 
 // Create a stream, and verify that it is closed after kTestCloseDelayMs.
 // if it doesn't start playing.
 TEST_F(AudioOutputResamplerTest, CreateAndWait) {
-  CreateAndWait(resampler_.get());
+  CreateAndWait(resampler_);
 }
 
 TEST_F(AudioOutputProxyTest, StartAndStop) {
-  StartAndStop(dispatcher_impl_.get());
+  StartAndStop(dispatcher_impl_);
 }
 
 TEST_F(AudioOutputResamplerTest, StartAndStop) {
-  StartAndStop(resampler_.get());
+  StartAndStop(resampler_);
 }
 
 TEST_F(AudioOutputProxyTest, CloseAfterStop) {
-  CloseAfterStop(dispatcher_impl_.get());
+  CloseAfterStop(dispatcher_impl_);
 }
 
 TEST_F(AudioOutputResamplerTest, CloseAfterStop) {
-  CloseAfterStop(resampler_.get());
+  CloseAfterStop(resampler_);
 }
 
-TEST_F(AudioOutputProxyTest, TwoStreams) { TwoStreams(dispatcher_impl_.get()); }
+TEST_F(AudioOutputProxyTest, TwoStreams) { TwoStreams(dispatcher_impl_); }
 
-TEST_F(AudioOutputResamplerTest, TwoStreams) { TwoStreams(resampler_.get()); }
+TEST_F(AudioOutputResamplerTest, TwoStreams) { TwoStreams(resampler_); }
 
 // Two streams: verify that second stream is allocated when the first
 // starts playing.
-TEST_F(AudioOutputProxyTest, TwoStreams_OnePlaying) {
-  InitDispatcher(base::TimeDelta::FromSeconds(kTestBigCloseDelaySeconds));
-  TwoStreams_OnePlaying(dispatcher_impl_.get());
+TEST_F(AudioOutputProxyTest, OneStream_TwoPlays) {
+  OneStream_TwoPlays(dispatcher_impl_);
 }
 
-TEST_F(AudioOutputResamplerTest, TwoStreams_OnePlaying) {
-  InitDispatcher(base::TimeDelta::FromSeconds(kTestBigCloseDelaySeconds));
-  TwoStreams_OnePlaying(resampler_.get());
+TEST_F(AudioOutputResamplerTest, OneStream_TwoPlays) {
+  OneStream_TwoPlays(resampler_);
 }
 
 // Two streams, both are playing. Dispatcher should not open a third stream.
 TEST_F(AudioOutputProxyTest, TwoStreams_BothPlaying) {
-  InitDispatcher(base::TimeDelta::FromSeconds(kTestBigCloseDelaySeconds));
-  TwoStreams_BothPlaying(dispatcher_impl_.get());
+  TwoStreams_BothPlaying(dispatcher_impl_);
 }
 
 TEST_F(AudioOutputResamplerTest, TwoStreams_BothPlaying) {
-  InitDispatcher(base::TimeDelta::FromSeconds(kTestBigCloseDelaySeconds));
-  TwoStreams_BothPlaying(resampler_.get());
+  TwoStreams_BothPlaying(resampler_);
 }
 
-TEST_F(AudioOutputProxyTest, OpenFailed) { OpenFailed(dispatcher_impl_.get()); }
+TEST_F(AudioOutputProxyTest, OpenFailed) { OpenFailed(dispatcher_impl_); }
 
 // Start() method failed.
 TEST_F(AudioOutputProxyTest, StartFailed) {
-  StartFailed(dispatcher_impl_.get());
+  StartFailed(dispatcher_impl_);
 }
 
-TEST_F(AudioOutputResamplerTest, StartFailed) { StartFailed(resampler_.get()); }
+TEST_F(AudioOutputResamplerTest, StartFailed) { StartFailed(resampler_); }
 
 // Simulate AudioOutputStream::Create() failure with a low latency stream and
 // ensure AudioOutputResampler falls back to the high latency path.
 TEST_F(AudioOutputResamplerTest, LowLatencyCreateFailedFallback) {
   MockAudioOutputStream stream(&manager_, params_);
   EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
       .Times(2)
       .WillOnce(Return(static_cast<AudioOutputStream*>(NULL)))
       .WillRepeatedly(Return(&stream));
   EXPECT_CALL(stream, Open())
       .WillOnce(Return(true));
-  EXPECT_CALL(stream, Close())
-      .Times(1);
 
-  AudioOutputProxy* proxy = new AudioOutputProxy(resampler_.get());
+  AudioOutputProxy* proxy = new AudioOutputProxy(resampler_);
   EXPECT_TRUE(proxy->Open());
-  proxy->Close();
-  WaitForCloseTimer(kTestCloseDelayMs);
+  CloseAndWaitForCloseTimer(proxy, &stream);
 }
 
 // Simulate AudioOutputStream::Open() failure with a low latency stream and
 // ensure AudioOutputResampler falls back to the high latency path.
 TEST_F(AudioOutputResamplerTest, LowLatencyOpenFailedFallback) {
   MockAudioOutputStream failed_stream(&manager_, params_);
   MockAudioOutputStream okay_stream(&manager_, params_);
   EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
       .Times(2)
       .WillOnce(Return(&failed_stream))
       .WillRepeatedly(Return(&okay_stream));
   EXPECT_CALL(failed_stream, Open())
       .WillOnce(Return(false));
   EXPECT_CALL(failed_stream, Close())
       .Times(1);
   EXPECT_CALL(okay_stream, Open())
       .WillOnce(Return(true));
-  EXPECT_CALL(okay_stream, Close())
-      .Times(1);
 
-  AudioOutputProxy* proxy = new AudioOutputProxy(resampler_.get());
+  AudioOutputProxy* proxy = new AudioOutputProxy(resampler_);
   EXPECT_TRUE(proxy->Open());
-  proxy->Close();
-  WaitForCloseTimer(kTestCloseDelayMs);
+  CloseAndWaitForCloseTimer(proxy, &okay_stream);
 }
 
 // Simulate failures to open both the low latency and the fallback high latency
 // stream and ensure AudioOutputResampler falls back to a fake stream.
 TEST_F(AudioOutputResamplerTest, HighLatencyFallbackFailed) {
   MockAudioOutputStream okay_stream(&manager_, params_);
 
 // Only Windows has a high latency output driver that is not the same as the low
 // latency path.
 #if defined(OS_WIN)
@@ skipping 10 matching lines @@
   EXPECT_CALL(manager(), MakeAudioOutputStream(AllOf(
       testing::Property(&AudioParameters::format, AudioParameters::AUDIO_FAKE),
       testing::Property(&AudioParameters::sample_rate, params_.sample_rate()),
       testing::Property(
           &AudioParameters::frames_per_buffer, params_.frames_per_buffer())),
                          _, _))
       .Times(1)
       .WillOnce(Return(&okay_stream));
   EXPECT_CALL(okay_stream, Open())
       .WillOnce(Return(true));
-  EXPECT_CALL(okay_stream, Close())
-      .Times(1);
 
-  AudioOutputProxy* proxy = new AudioOutputProxy(resampler_.get());
+  AudioOutputProxy* proxy = new AudioOutputProxy(resampler_);
   EXPECT_TRUE(proxy->Open());
-  proxy->Close();
-  WaitForCloseTimer(kTestCloseDelayMs);
+  CloseAndWaitForCloseTimer(proxy, &okay_stream);
 }
 
 // Simulate failures to open both the low latency, the fallback high latency
 // stream, and the fake audio output stream and ensure AudioOutputResampler
 // terminates normally.
 TEST_F(AudioOutputResamplerTest, AllFallbackFailed) {
 // Only Windows has a high latency output driver that is not the same as the low
 // latency path.
 #if defined(OS_WIN)
   static const int kFallbackCount = 3;
 #else
   static const int kFallbackCount = 2;
 #endif
   EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
       .Times(kFallbackCount)
       .WillRepeatedly(Return(static_cast<AudioOutputStream*>(NULL)));
 
-  AudioOutputProxy* proxy = new AudioOutputProxy(resampler_.get());
+  AudioOutputProxy* proxy = new AudioOutputProxy(resampler_);
   EXPECT_FALSE(proxy->Open());
   proxy->Close();
-  WaitForCloseTimer(kTestCloseDelayMs);
 }
 
 // Simulate an eventual OpenStream() failure; i.e. successful OpenStream() calls
 // eventually followed by one which fails; root cause of http://crbug.com/150619
 TEST_F(AudioOutputResamplerTest, LowLatencyOpenEventuallyFails) {
   MockAudioOutputStream stream1(&manager_, params_);
   MockAudioOutputStream stream2(&manager_, params_);
-  MockAudioOutputStream stream3(&manager_, params_);
 
   // Setup the mock such that all three streams are successfully created.
   EXPECT_CALL(manager(), MakeAudioOutputStream(_, _, _))
       .WillOnce(Return(&stream1))
       .WillOnce(Return(&stream2))
-      .WillOnce(Return(&stream3))
       .WillRepeatedly(Return(static_cast<AudioOutputStream*>(NULL)));
 
   // Stream1 should be able to successfully open and start.
   EXPECT_CALL(stream1, Open())
       .WillOnce(Return(true));
-  EXPECT_CALL(stream1, Close())
-      .Times(1);
   EXPECT_CALL(stream1, SetVolume(_))
       .Times(1);
 
   // Stream2 should also be able to successfully open and start.
   EXPECT_CALL(stream2, Open())
       .WillOnce(Return(true));
-  EXPECT_CALL(stream2, Close())
-      .Times(1);
   EXPECT_CALL(stream2, SetVolume(_))
       .Times(1);
 
-  // Stream3 should fail on Open() (yet still be closed since
-  // MakeAudioOutputStream returned a valid AudioOutputStream object).
-  EXPECT_CALL(stream3, Open())
-      .WillOnce(Return(false));
-  EXPECT_CALL(stream3, Close())
-      .Times(1);
-
   // Open and start the first proxy and stream.
-  AudioOutputProxy* proxy1 = new AudioOutputProxy(resampler_.get());
+  AudioOutputProxy* proxy1 = new AudioOutputProxy(resampler_);
   EXPECT_TRUE(proxy1->Open());
   proxy1->Start(&callback_);
   OnStart();
 
   // Open and start the second proxy and stream.
-  AudioOutputProxy* proxy2 = new AudioOutputProxy(resampler_.get());
+  AudioOutputProxy* proxy2 = new AudioOutputProxy(resampler_);
   EXPECT_TRUE(proxy2->Open());
   proxy2->Start(&callback_);
   OnStart();
 
   // Attempt to open the third stream which should fail.
-  AudioOutputProxy* proxy3 = new AudioOutputProxy(resampler_.get());
+  AudioOutputProxy* proxy3 = new AudioOutputProxy(resampler_);
   EXPECT_FALSE(proxy3->Open());
+  proxy3->Close();
 
   // Perform the required Stop()/Close() shutdown dance for each proxy.  Under
   // the hood each proxy should correctly call CloseStream() if OpenStream()
   // succeeded or not.
-  proxy3->Stop();
-  proxy3->Close();
   proxy2->Stop();
-  proxy2->Close();
+  CloseAndWaitForCloseTimer(proxy2, &stream2);
+
   proxy1->Stop();
-  proxy1->Close();
+  CloseAndWaitForCloseTimer(proxy1, &stream1);
 
-  // Wait for all of the messages to fly and then verify stream behavior.
-  WaitForCloseTimer(kTestCloseDelayMs);
   EXPECT_TRUE(stream1.stop_called());
   EXPECT_TRUE(stream1.start_called());
   EXPECT_TRUE(stream2.stop_called());
   EXPECT_TRUE(stream2.start_called());
-  EXPECT_FALSE(stream3.stop_called());
-  EXPECT_FALSE(stream3.start_called());
 }
 
 }  // namespace media