@Test public void testPlayerSelectionEvent() { ArrayList<Player> players = new ArrayList<Player>(); Player p1 = new Player("ABC Player1", Position.QB, null, 1.0); Player p2 = new Player("DEF Player2", Position.QB, null, 1.0); players.add(p1); players.add(p2); PlayerSelector sel = new PlayerSelector(players); NameSelectionListener listener = mock(NameSelectionListener.class); NameSelectionListener listener2 = mock(NameSelectionListener.class); sel.addNameSelectionListener(listener); sel.addNameSelectionListener(listener2); assertEquals(sel.getAvailablePlayer(0), p1); sel.setText("de"); assertEquals(sel.getAvailablePlayer(0), p2); sel.selectName(); verify(listener).nameSelected(p2); verify(listener2).nameSelected(p2); sel.removeNameSelectionListener(listener); sel.setText("ab"); sel.selectName(); verifyNoMoreInteractions(listener); verify(listener2).nameSelected(p1); }