hls: add fmp4 tests

internal/hls/muxer_primary_playlist.go

@@ -50,24 +50,19 @@ func (p *muxerPrimaryPlaylist) file() *MuxerFileResponse {
 				codecs = append(codecs, "mp4a.40."+strconv.FormatInt(int64(p.audioTrack.Config.Type), 10))
 			}
 
-			switch {
-			case !p.fmp4:
-				return bytes.NewReader([]byte("#EXTM3U\n" +
-					"#EXT-X-VERSION:3\n" +
-					"#EXT-X-INDEPENDENT-SEGMENTS\n" +
-					"\n" +
-					"#EXT-X-STREAM-INF:BANDWIDTH=200000,CODECS=\"" + strings.Join(codecs, ",") + "\"\n" +
-					"stream.m3u8\n"))
-
-			default:
-				return bytes.NewReader([]byte("#EXTM3U\n" +
-					"#EXT-X-VERSION:9\n" +
-					"#EXT-X-INDEPENDENT-SEGMENTS\n" +
-					"\n" +
-					"#EXT-X-STREAM-INF:BANDWIDTH=200000,CODECS=\"" + strings.Join(codecs, ",") + "\"\n" +
-					"stream.m3u8\n" +
-					"\n"))
+			var version int
+			if !p.fmp4 {
+				version = 3
+			} else {
+				version = 9
 			}
+
+			return bytes.NewReader([]byte("#EXTM3U\n" +
+				"#EXT-X-VERSION:" + strconv.FormatInt(int64(version), 10) + "\n" +
+				"#EXT-X-INDEPENDENT-SEGMENTS\n" +
+				"\n" +
+				"#EXT-X-STREAM-INF:BANDWIDTH=200000,CODECS=\"" + strings.Join(codecs, ",") + "\"\n" +
+				"stream.m3u8\n"))
 		}(),
 	}
 }