EasyMock.replay(itThrillerMock);
EasyMock.replay(itBeatItMock);
EasyMock.replay(itBillyJeanMock);
EasyMock.replay(itTrackCollectionMock);
TrackCollectionImpl tracks = new TrackCollectionImpl(libraryMock, itTrackCollectionMock);
assertTrue(tracks.get(0) == thrillerMock);
assertTrue(tracks.get(1) == beatItMock);
assertTrue(tracks.get(2) == billyJeanMock);
}