Allow multiple OnMoreData() calls in WASAPIAudioOutputStreamTest.ValidPacketSize

media/audio/win/audio_low_latency_output_win_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 <windows.h>
 #include <mmsystem.h>
 
 #include "base/basictypes.h"
 #include "base/environment.h"
 #include "base/files/file_util.h"
@@ skipping 362 matching lines @@
   // Create default WASAPI output stream which plays out in stereo using
   // the shared mixing rate. The default buffer size is 10ms.
   AudioOutputStreamWrapper aosw(audio_manager.get());
   AudioOutputStream* aos = aosw.Create();
   EXPECT_TRUE(aos->Open());
 
   // Derive the expected size in bytes of each packet.
   uint32 bytes_per_packet = aosw.channels() * aosw.samples_per_packet() *
       (aosw.bits_per_sample() / 8);
 
-  // Wait for the first callback and verify its parameters.
+  // Wait for the first callback and verify its parameters.  Ignore any
+  // subsequent callbacks that might arrive.
   EXPECT_CALL(source, OnMoreData(NotNull(), HasValidDelay(bytes_per_packet)))
       .WillOnce(DoAll(QuitLoop(loop.task_runner()),
-                      Return(aosw.samples_per_packet())));
+                      Return(aosw.samples_per_packet())))
+      .WillRepeatedly(Return(0));
 
   aos->Start(&source);
   loop.PostDelayedTask(FROM_HERE, base::MessageLoop::QuitWhenIdleClosure(),
                        TestTimeouts::action_timeout());
   loop.Run();
   aos->Stop();
   aos->Close();
 }
 
 // This test is intended for manual tests and should only be enabled
@@ skipping 218 matching lines @@
 
   aos->Start(&source);
   loop.PostDelayedTask(FROM_HERE, base::MessageLoop::QuitWhenIdleClosure(),
                        TestTimeouts::action_timeout());
   loop.Run();
   aos->Stop();
   aos->Close();
 }
 
 }  // namespace media