@Test public void and() { assertFalse(Ack.NOK.and(Ack.NOK).isSuccess()); assertFalse(Ack.NOK.and(Ack.OK).isSuccess()); assertFalse(Ack.OK.and(Ack.NOK).isSuccess()); assertTrue(Ack.OK.and(Ack.OK).isSuccess()); }