public void testFactory_Zone_int() {
        JulianChronology chrono = JulianChronology.getInstance(TOKYO, 2);
        assertEquals(TOKYO, chrono.getZone());
        assertEquals(2, chrono.getMinimumDaysInFirstWeek());
        
        try {
            JulianChronology.getInstance(TOKYO, 0);
            fail();
        } catch (IllegalArgumentException ex) {}
        try {
            JulianChronology.getInstance(TOKYO, 8);
            fail();
        } catch (IllegalArgumentException ex) {}
    }