@Test public void shouldSaveWithAListMusic() { Long[] ids = new Long[3]; ids[0] = 1L; ids[1] = 2L; ids[2] = 3L; service.save(ids); verify(dao).incluir(captor.capture()); List<Music> musics = captor.getValue().getMusic(); assertNotNull("Should set a list of music", musics); assertEquals(ids[0], musics.get(0).getId()); assertEquals(ids[1], musics.get(1).getId()); assertEquals(ids[2], musics.get(2).getId()); }