Fix overloaded pipeline integration tests to support underflow.

media/test/pipeline_integration_test.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 "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
 #include "build/build_config.h"
@@ skipping 645 matching lines @@
 #endif
 
 class PipelineIntegrationTest : public PipelineIntegrationTestHost {
  public:
   void StartPipelineWithMediaSource(MockMediaSource* source) {
     EXPECT_CALL(*source, InitSegmentReceived()).Times(AtLeast(1));
     EXPECT_CALL(*this, OnMetadata(_))
         .Times(AtMost(1))
         .WillRepeatedly(SaveArg<0>(&metadata_));
     EXPECT_CALL(*this, OnBufferingStateChanged(BUFFERING_HAVE_ENOUGH))
-        .Times(AtMost(1));
+        .Times(AnyNumber());
+    EXPECT_CALL(*this, OnBufferingStateChanged(BUFFERING_HAVE_NOTHING))
+        .Times(AnyNumber());
 
     // Encrypted content not used, so this is never called.
     EXPECT_CALL(*this, OnWaitingForDecryptionKey()).Times(0);
 
     demuxer_ = source->GetDemuxer().Pass();
     pipeline_->Start(
         demuxer_.get(), CreateRenderer(),
         base::Bind(&PipelineIntegrationTest::OnEnded, base::Unretained(this)),
         base::Bind(&PipelineIntegrationTest::OnError, base::Unretained(this)),
         base::Bind(&PipelineIntegrationTest::OnStatusCallback,
@@ skipping 16 matching lines @@
   }
 
   void StartPipelineWithEncryptedMedia(
       MockMediaSource* source,
       FakeEncryptedMedia* encrypted_media) {
     EXPECT_CALL(*source, InitSegmentReceived()).Times(AtLeast(1));
     EXPECT_CALL(*this, OnMetadata(_))
         .Times(AtMost(1))
         .WillRepeatedly(SaveArg<0>(&metadata_));
     EXPECT_CALL(*this, OnBufferingStateChanged(BUFFERING_HAVE_ENOUGH))
-        .Times(AtMost(1));
+        .Times(AnyNumber());
+    EXPECT_CALL(*this, OnBufferingStateChanged(BUFFERING_HAVE_NOTHING))
+        .Times(AnyNumber());
     EXPECT_CALL(*this, DecryptorAttached(true));
 
     // Encrypted content used but keys provided in advance, so this is
     // never called.
     EXPECT_CALL(*this, OnWaitingForDecryptionKey()).Times(0);
 
     demuxer_ = source->GetDemuxer().Pass();
 
     pipeline_->SetCdm(encrypted_media->GetCdmContext(),
                       base::Bind(&PipelineIntegrationTest::DecryptorAttached,
@@ skipping 1023 matching lines @@
 
 TEST_F(PipelineIntegrationTest, BasicPlaybackPositiveStartTime) {
   ASSERT_EQ(PIPELINE_OK, Start("nonzero-start-time.webm"));
   Play();
   ASSERT_TRUE(WaitUntilOnEnded());
   ASSERT_EQ(base::TimeDelta::FromMicroseconds(396000),
             demuxer_->GetStartTime());
 }
 
 }  // namespace media