public void test_cutoverPreZero() {
        DateTime cutover = new LocalDate(-2, 6, 30, ISOChronology.getInstanceUTC()).toDateTimeAtStartOfDay(DateTimeZone.UTC);
        try {
            GJChronology.getInstance(DateTimeZone.UTC, cutover);
            fail();
        } catch (IllegalArgumentException ex) {
            // expected
        }
    }