Refactoring to share MockAudioOutputStream implementations across 3 platforms...

media/audio/win/audio_output_win_unittest.cc

Index: media/audio/win/audio_output_win_unittest.cc
===================================================================
--- media/audio/win/audio_output_win_unittest.cc	(revision 20503)
+++ media/audio/win/audio_output_win_unittest.cc	(working copy)
@@ -193,51 +193,6 @@
   EXPECT_EQ(1, source.was_closed());
 }
 
-// Validate that the SineWaveAudioSource writes the expected values for
-// the FORMAT_16BIT_MONO. The values are carefully selected so rounding issues
-// do not affect the result. We also test that AudioManager::GetLastMockBuffer
-// works.
-// TODO(hclam): move this test to SimpleSourcesTest once mock audio stream is
-// implemented on other platform.
-TEST(WinAudioTest, SineWaveAudio16MonoTest) {
-  const size_t samples = 1024;
-  const size_t bytes_per_sample = 2;
-  const int freq = 200;
-
-  SineWaveAudioSource source(SineWaveAudioSource::FORMAT_16BIT_LINEAR_PCM, 1,
-                             freq, AudioManager::kTelephoneSampleRate);
-
-  AudioManager* audio_man = AudioManager::GetAudioManager();
-  ASSERT_TRUE(NULL != audio_man);
-  AudioOutputStream* oas =
-      audio_man->MakeAudioStream(AudioManager::AUDIO_MOCK, 1,
-                                 AudioManager::kTelephoneSampleRate,
-                                 bytes_per_sample * 2);
-  ASSERT_TRUE(NULL != oas);
-  EXPECT_TRUE(oas->Open(samples * bytes_per_sample));
-
-  oas->Start(&source);
-  oas->Stop();
-  oas->Close();
-
-  const int16* last_buffer =
-      reinterpret_cast<const int16*>(audio_man->GetLastMockBuffer());
-  ASSERT_TRUE(NULL != last_buffer);
-
-  size_t half_period = AudioManager::kTelephoneSampleRate / (freq * 2);
-
-  // Spot test positive incursion of sine wave.
-  EXPECT_EQ(0, last_buffer[0]);
-  EXPECT_EQ(5126, last_buffer[1]);
-  EXPECT_TRUE(last_buffer[1] < last_buffer[2]);
-  EXPECT_TRUE(last_buffer[2] < last_buffer[3]);
-  // Spot test negative incursion of sine wave.
-  EXPECT_EQ(0, last_buffer[half_period]);
-  EXPECT_EQ(-5126, last_buffer[half_period + 1]);
-  EXPECT_TRUE(last_buffer[half_period + 1] > last_buffer[half_period + 2]);
-  EXPECT_TRUE(last_buffer[half_period + 2] > last_buffer[half_period + 3]);
-}
-
 // ===========================================================================
 // Validation of AudioManager::AUDIO_PCM_LINEAR
 //