public void testGet() {
        Partial test = createHourMinPartial();
        assertEquals(10, test.get(DateTimeFieldType.hourOfDay()));
        assertEquals(20, test.get(DateTimeFieldType.minuteOfHour()));
        try {
            test.get(null);
            fail();
        } catch (IllegalArgumentException ex) {}
        try {
            test.get(DateTimeFieldType.secondOfMinute());
            fail();
        } catch (IllegalArgumentException ex) {}
    }