Ensure media's buffered ranges always have a range that includes currentTime.

media/base/pipeline_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 <vector>
 
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/stl_util.h"
 #include "base/threading/simple_thread.h"
@@ skipping 462 matching lines @@
 
   EXPECT_EQ(0u, pipeline_->GetBufferedTimeRanges().size());
 
   EXPECT_FALSE(pipeline_->DidLoadingProgress());
   pipeline_->AddBufferedByteRange(0, kTotalBytes / 8);
   EXPECT_TRUE(pipeline_->DidLoadingProgress());
   EXPECT_FALSE(pipeline_->DidLoadingProgress());
   EXPECT_EQ(1u, pipeline_->GetBufferedTimeRanges().size());
   EXPECT_EQ(base::TimeDelta(), pipeline_->GetBufferedTimeRanges().start(0));
   EXPECT_EQ(kDuration / 8, pipeline_->GetBufferedTimeRanges().end(0));
+  pipeline_->AddBufferedTimeRange(base::TimeDelta(), kDuration / 8);
+  EXPECT_EQ(base::TimeDelta(), pipeline_->GetBufferedTimeRanges().start(0));
+  EXPECT_EQ(kDuration / 8, pipeline_->GetBufferedTimeRanges().end(0));
 
   base::TimeDelta kSeekTime = kDuration / 2;
   ExpectSeek(kSeekTime);
   DoSeek(kSeekTime);
 
   EXPECT_FALSE(pipeline_->DidLoadingProgress());
   pipeline_->AddBufferedByteRange(kTotalBytes / 2,
                                   kTotalBytes / 2 + kTotalBytes / 8);
   EXPECT_TRUE(pipeline_->DidLoadingProgress());
   EXPECT_FALSE(pipeline_->DidLoadingProgress());
   EXPECT_EQ(2u, pipeline_->GetBufferedTimeRanges().size());
   EXPECT_EQ(base::TimeDelta(), pipeline_->GetBufferedTimeRanges().start(0));
   EXPECT_EQ(kDuration / 8, pipeline_->GetBufferedTimeRanges().end(0));
   EXPECT_EQ(kDuration / 2, pipeline_->GetBufferedTimeRanges().start(1));
   EXPECT_EQ(kDuration / 2 + kDuration / 8,
             pipeline_->GetBufferedTimeRanges().end(1));
+
+  pipeline_->AddBufferedTimeRange(kDuration / 4, 3 * kDuration / 8);
+  EXPECT_EQ(base::TimeDelta(), pipeline_->GetBufferedTimeRanges().start(0));
+  EXPECT_EQ(kDuration / 8, pipeline_->GetBufferedTimeRanges().end(0));
+  EXPECT_EQ(kDuration / 4, pipeline_->GetBufferedTimeRanges().start(1));
+  EXPECT_EQ(3* kDuration / 8, pipeline_->GetBufferedTimeRanges().end(1));
+  EXPECT_EQ(kDuration / 2, pipeline_->GetBufferedTimeRanges().start(2));
+  EXPECT_EQ(kDuration / 2 + kDuration / 8,
+            pipeline_->GetBufferedTimeRanges().end(2));
 }
 
 TEST_F(PipelineTest, DisableAudioRenderer) {
   CreateAudioStream();
   CreateVideoStream();
   MockDemuxerStreamVector streams;
   streams.push_back(audio_stream());
   streams.push_back(video_stream());
 
   InitializeDemuxer(&streams);
@@ skipping 335 matching lines @@
   TestPipelineStatusNotification(base::TimeDelta::FromMilliseconds(0));
 }
 
 // Test that different-thread, some-delay callback (the expected common case)
 // works correctly.
 TEST(PipelineStatusNotificationTest, DelayedCallback) {
   TestPipelineStatusNotification(base::TimeDelta::FromMilliseconds(20));
 }
 
 }  // namespace media