Add basic unit test for parsing.

library/hls/src/test/java/com/google/android/exoplayer2/source/hls/playlist/HlsMasterPlaylistParserTest.java

@@ -24,6 +24,7 @@ import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.ParserException;
 import com.google.android.exoplayer2.metadata.Metadata;
+import com.google.android.exoplayer2.source.hls.HlsMediaSource;
 import com.google.android.exoplayer2.source.hls.HlsTrackMetadataEntry;
 import com.google.android.exoplayer2.util.MimeTypes;
 import java.io.ByteArrayInputStream;
@@ -194,6 +195,22 @@ public class HlsMasterPlaylistParserTest {
           + "#EXT-X-MEDIA:TYPE=SUBTITLES,"
           + "GROUP-ID=\"sub1\",NAME=\"English\",URI=\"s1/en/prog_index.m3u8\"\n";
 
+  private static final String PLAYLIST_WITH_IFRAME_VARIANTS =
+      "#EXTM3U\n"
+          + "#EXT-X-VERSION:5\n"
+          + "#EXT-X-MEDIA:URI=\"AUDIO_English/index.m3u8\",TYPE=AUDIO,GROUP-ID=\"audio-aac\",LANGUAGE=\"en\",NAME=\"English\",AUTOSELECT=YES\n"
+          + "#EXT-X-MEDIA:URI=\"AUDIO_Spanish/index.m3u8\",TYPE=AUDIO,GROUP-ID=\"audio-aac\",LANGUAGE=\"es\",NAME=\"Spanish\",AUTOSELECT=YES\n"
+          + "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS,GROUP-ID=\"cc1\",LANGUAGE=\"en\",NAME=\"English\",AUTOSELECT=YES,DEFAULT=YES,INSTREAM-ID=\"CC1\"\n"
+          + "#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=400000,RESOLUTION=480x320,CODECS=\"mp4a.40.2,avc1.640015\",AUDIO=\"audio-aac\",CLOSED-CAPTIONS=\"cc1\"\n"
+          + "400000/index.m3u8\n"
+          + "#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1000000,RESOLUTION=848x480,CODECS=\"mp4a.40.2,avc1.64001f\",AUDIO=\"audio-aac\",CLOSED-CAPTIONS=\"cc1\"\n"
+          + "1000000/index.m3u8\n"
+          + "#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=3220000,RESOLUTION=1280x720,CODECS=\"mp4a.40.2,avc1.64001f\",AUDIO=\"audio-aac\",CLOSED-CAPTIONS=\"cc1\"\n"
+          + "3220000/index.m3u8\n"
+          + "#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=8940000,RESOLUTION=1920x1080,CODECS=\"mp4a.40.2,avc1.640028\",AUDIO=\"audio-aac\",CLOSED-CAPTIONS=\"cc1\"\n"
+          + "8940000/index.m3u8\n"
+          + "#EXT-X-I-FRAME-STREAM-INF:BANDWIDTH=1313400,RESOLUTION=1920x1080,CODECS=\"avc1.640028\",URI=\"iframe_1313400/index.m3u8\"\n";
+
   @Test
   public void parseMasterPlaylist_withSimple_success() throws IOException {
     HlsMasterPlaylist masterPlaylist = parseMasterPlaylist(PLAYLIST_URI, PLAYLIST_SIMPLE);
@@ -381,6 +398,15 @@ public class HlsMasterPlaylistParserTest {
         .isEqualTo(createExtXMediaMetadata(/* groupId= */ "aud3", /* name= */ "English"));
   }
 
+  @Test
+  public void testIFrameVariant() throws IOException {
+    HlsMasterPlaylist playlist = parseMasterPlaylist(PLAYLIST_URI, PLAYLIST_WITH_IFRAME_VARIANTS);
+    assertThat(playlist.variants).hasSize(4);
+    assertThat(playlist.iFrameVariants).hasSize(1);
+    assertThat(playlist.iFrameVariants.get(0).format.bitrate).isEqualTo(1313400);
+    assertThat(playlist.iFrameVariants.get(0).format.roleFlags & C.ROLE_FLAG_TRICK_PLAY).isEqualTo(C.ROLE_FLAG_TRICK_PLAY);
+  }
+
   private static Metadata createExtXStreamInfMetadata(HlsTrackMetadataEntry.VariantInfo... infos) {
     return new Metadata(
         new HlsTrackMetadataEntry(/* groupId= */ null, /* name= */ null, Arrays.asList(infos)));