Reland of MSE: Verify MediaLog events created by existing MP4 unit tests

media/formats/mp4/mp4_stream_parser_unittest.cc

Index: media/formats/mp4/mp4_stream_parser_unittest.cc
diff --git a/media/formats/mp4/mp4_stream_parser_unittest.cc b/media/formats/mp4/mp4_stream_parser_unittest.cc
index 6617312b1747322084209f45279a4ad285e204b9..620b81f0bcbe54d8bbd96a67dc43505c5d09d2dd 100644
--- a/media/formats/mp4/mp4_stream_parser_unittest.cc
+++ b/media/formats/mp4/mp4_stream_parser_unittest.cc
@@ -12,23 +12,41 @@
 #include "base/time/time.h"
 #include "media/base/audio_decoder_config.h"
 #include "media/base/decoder_buffer.h"
+#include "media/base/mock_media_log.h"
 #include "media/base/stream_parser_buffer.h"
 #include "media/base/test_data_util.h"
 #include "media/base/text_track_config.h"
 #include "media/base/video_decoder_config.h"
 #include "media/formats/mp4/es_descriptor.h"
 #include "media/formats/mp4/mp4_stream_parser.h"
+#include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using ::testing::InSequence;
+using ::testing::StrictMock;
 using base::TimeDelta;
 
 namespace media {
 namespace mp4 {
+
+// Matchers for verifying common media log entry strings.
+MATCHER_P(VideoCodecLog, codec_string, "") {
+  return CONTAINS_STRING(arg, "Video codec: " + std::string(codec_string));
+}
+
+MATCHER_P(AudioCodecLog, codec_string, "") {
+  return CONTAINS_STRING(arg, "Audio codec: " + std::string(codec_string));
+}
+
+MATCHER(AuxInfoUnavailableLog, "") {
+  return CONTAINS_STRING(arg, "Aux Info is not available.");
+}
 
 class MP4StreamParserTest : public testing::Test {
  public:
   MP4StreamParserTest()
-      : configs_received_(false),
+      : media_log_(new StrictMock<MockMediaLog>()),
+        configs_received_(false),
         lower_bound_(
             DecodeTimestamp::FromPresentationTime(base::TimeDelta::Max())) {
     std::set<int> audio_object_types;
@@ -37,6 +55,7 @@
   }
 
  protected:
+  scoped_refptr<StrictMock<MockMediaLog>> media_log_;
   scoped_ptr<MP4StreamParser> parser_;
   bool configs_received_;
   AudioDecoderConfig audio_decoder_config_;
@@ -149,7 +168,7 @@
         base::Bind(&MP4StreamParserTest::KeyNeededF, base::Unretained(this)),
         base::Bind(&MP4StreamParserTest::NewSegmentF, base::Unretained(this)),
         base::Bind(&MP4StreamParserTest::EndOfSegmentF, base::Unretained(this)),
-        new MediaLog());
+        media_log_);
   }
 
   void InitializeParser() {
@@ -172,22 +191,30 @@
 TEST_F(MP4StreamParserTest, UnalignedAppend) {
   // Test small, non-segment-aligned appends (small enough to exercise
   // incremental append system)
+  EXPECT_MEDIA_LOG(VideoCodecLog("avc1.6401f"));
+  EXPECT_MEDIA_LOG(AudioCodecLog("mp4a.40.2"));
   ParseMP4File("bear-1280x720-av_frag.mp4", 512);
 }
 
 TEST_F(MP4StreamParserTest, BytewiseAppend) {
   // Ensure no incremental errors occur when parsing
+  EXPECT_MEDIA_LOG(VideoCodecLog("avc1.6401f"));
+  EXPECT_MEDIA_LOG(AudioCodecLog("mp4a.40.2"));
   ParseMP4File("bear-1280x720-av_frag.mp4", 1);
 }
 
 TEST_F(MP4StreamParserTest, MultiFragmentAppend) {
   // Large size ensures multiple fragments are appended in one call (size is
   // larger than this particular test file)
+  EXPECT_MEDIA_LOG(VideoCodecLog("avc1.6401f"));
+  EXPECT_MEDIA_LOG(AudioCodecLog("mp4a.40.2"));
   ParseMP4File("bear-1280x720-av_frag.mp4", 768432);
 }
 
 TEST_F(MP4StreamParserTest, Flush) {
   // Flush while reading sample data, then start a new stream.
+  EXPECT_MEDIA_LOG(VideoCodecLog("avc1.6401f")).Times(2);
+  EXPECT_MEDIA_LOG(AudioCodecLog("mp4a.40.2")).Times(2);
   InitializeParser();
 
   scoped_refptr<DecoderBuffer> buffer =
@@ -200,6 +227,8 @@
 }
 
 TEST_F(MP4StreamParserTest, Reinitialization) {
+  EXPECT_MEDIA_LOG(VideoCodecLog("avc1.6401f")).Times(2);
+  EXPECT_MEDIA_LOG(AudioCodecLog("mp4a.40.2")).Times(2);
   InitializeParser();
 
   scoped_refptr<DecoderBuffer> buffer =
@@ -213,14 +242,19 @@
 }
 
 TEST_F(MP4StreamParserTest, MPEG2_AAC_LC) {
+  InSequence s;
   std::set<int> audio_object_types;
   audio_object_types.insert(kISO_13818_7_AAC_LC);
   parser_.reset(new MP4StreamParser(audio_object_types, false));
+  EXPECT_MEDIA_LOG(AudioCodecLog("mp4a.67"));
+  EXPECT_MEDIA_LOG(AudioCodecLog("mp4a.40.2"));
   ParseMP4File("bear-mpeg2-aac-only_frag.mp4", 512);
 }
 
 // Test that a moov box is not always required after Flush() is called.
 TEST_F(MP4StreamParserTest, NoMoovAfterFlush) {
+  EXPECT_MEDIA_LOG(VideoCodecLog("avc1.6401f"));
+  EXPECT_MEDIA_LOG(AudioCodecLog("mp4a.40.2"));
   InitializeParser();
 
   scoped_refptr<DecoderBuffer> buffer =
@@ -240,18 +274,23 @@
 // SampleAuxiliaryInformation{Sizes|Offsets}Box (saiz|saio) are missing.
 // The parser should fail instead of crash. See http://crbug.com/361347
 TEST_F(MP4StreamParserTest, MissingSampleAuxInfo) {
+  InSequence s;
+
   // Encrypted test mp4 files have non-zero duration and are treated as
   // recorded streams.
   InitializeParserAndExpectLiveness(DemuxerStream::LIVENESS_RECORDED);
 
   scoped_refptr<DecoderBuffer> buffer =
       ReadTestDataFile("bear-1280x720-a_frag-cenc_missing-saiz-saio.mp4");
+  EXPECT_MEDIA_LOG(AudioCodecLog("mp4a.40.2")).Times(2);
+  EXPECT_MEDIA_LOG(AuxInfoUnavailableLog());
   EXPECT_FALSE(AppendDataInPieces(buffer->data(), buffer->data_size(), 512));
 }
 
 // Test a file where all video samples start with an Access Unit
 // Delimiter (AUD) NALU.
 TEST_F(MP4StreamParserTest, VideoSamplesStartWithAUDs) {
+  EXPECT_MEDIA_LOG(VideoCodecLog("avc1.4d4028"));
   ParseMP4File("bear-1280x720-av_with-aud-nalus_frag.mp4", 512);
 }
 
@@ -262,6 +301,7 @@
 
   scoped_refptr<DecoderBuffer> buffer =
       ReadTestDataFile("bear-1280x720-v_frag-cenc.mp4");
+  EXPECT_MEDIA_LOG(VideoCodecLog("avc1.6401f"));
   EXPECT_TRUE(AppendDataInPieces(buffer->data(), buffer->data_size(), 512));
 }
 
@@ -271,6 +311,7 @@
   scoped_refptr<DecoderBuffer> buffer =
       ReadTestDataFile("bear-640x360-non_square_pixel-without_pasp.mp4");
 
+  EXPECT_MEDIA_LOG(VideoCodecLog("avc1.6401e"));
   EXPECT_TRUE(AppendDataInPieces(buffer->data(), buffer->data_size(), 512));
   EXPECT_EQ(gfx::Size(639, 360), video_decoder_config_.natural_size());
 }
@@ -281,6 +322,7 @@
   scoped_refptr<DecoderBuffer> buffer =
       ReadTestDataFile("bear-640x360-non_square_pixel-with_pasp.mp4");
 
+  EXPECT_MEDIA_LOG(VideoCodecLog("avc1.6401e"));
   EXPECT_TRUE(AppendDataInPieces(buffer->data(), buffer->data_size(), 512));
   EXPECT_EQ(gfx::Size(639, 360), video_decoder_config_.natural_size());
 }