MediaPlayer { public LiveVideos LiveVideos() { if (liveVideos == null) { liveVideos = new LiveVideos(this); } return liveVideos; } MediaPlayer(Tracker tracker); Media Media(); LiveMedia LiveMedia(); Videos Videos(); Audios Audios(); LiveVideos LiveVideos(); LiveAudios LiveAudios(); int getPlayerId(); MediaPlayer setPlayerId(int playerId);  }
@Test public void getLiveVideosTest() { LiveVideos liveVideos = mediaPlayer.LiveVideos(); assertNotNull(mediaPlayer.LiveVideos()); assertSame(liveVideos, mediaPlayer.LiveVideos()); }