public void test_DateTime_setHourBack_Moscow_Spring() {
        DateTime dt = new DateTime(2007, 3, 25, 8, 0, 0, 0, ZONE_MOSCOW);
        assertEquals("2007-03-25T08:00:00.000+04:00", dt.toString());
        
        try {
            dt.hourOfDay().setCopy(2);
            fail();
        } catch (IllegalFieldValueException ex) {
            // expected
        }
    }