Add unit test for AudioBus::CreateWrapper()

media/base/audio_bus.h

 // 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.
 
 #ifndef MEDIA_BASE_AUDIO_BUS_H_
 #define MEDIA_BASE_AUDIO_BUS_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/aligned_memory.h"
 #include "media/base/media_export.h"
 
 namespace media {
 class AudioParameters;
 
 // Represents a sequence of audio frames containing frames() audio samples for
 // each of channels() channels. The data is stored as a set of contiguous
 // float arrays with one array per channel. The memory for the arrays is either
 // allocated and owned by the AudioBus or it is provided to one of the factory
 // methods. AudioBus guarantees that it allocates memory such that float array
 // for each channel is aligned by AudioBus::kChannelAlignment bytes and it
 // requires the same for memory passed to its Wrap...() factory methods.
-// TODO(chfremer): There are currently no unit tests involving CreateWrapper and
-// SetChannelData, so we need to add them.
 class MEDIA_EXPORT AudioBus {
  public:
   // Guaranteed alignment of each channel's data; use 16-byte alignment for easy
   // SSE optimizations.
   enum { kChannelAlignment = 16 };
 
   // Creates a new AudioBus and allocates |channels| of length |frames|.  Uses
   // channels() and frames_per_buffer() from AudioParameters if given.
   static std::unique_ptr<AudioBus> Create(int channels, int frames);
   static std::unique_ptr<AudioBus> Create(const AudioParameters& params);
@@ skipping 262 matching lines @@
       float sourceSampleValue = channel_data[source_frame_index];
       dest_buffer[write_pos_in_dest] =
           TargetSampleTypeTraits::FromFloat(sourceSampleValue);
     }
   }
 }
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_AUDIO_BUS_H_