public void testPropertySetSecond() {
        TimeOfDay test = new TimeOfDay(10, 20, 30, 40);
        TimeOfDay copy = test.secondOfMinute().setCopy(12);
        check(test, 10, 20, 30, 40);
        check(copy, 10, 20, 12, 40);
        
        try {
            test.secondOfMinute().setCopy(60);
            fail();
        } catch (IllegalArgumentException ex) {}
        try {
            test.secondOfMinute().setCopy(-1);
            fail();
        } catch (IllegalArgumentException ex) {}
    }