@Test
public void testIsStartOfDecade() {

    todayGerman.set(Calendar.YEAR, 2000);
    CalendarUtils.startOfYear(todayGerman);
    assertTrue(CalendarUtils.isStartOfDecade(todayGerman));
    todayGerman.add(Calendar.YEAR, 1);
    assertFalse(CalendarUtils.isStartOfDecade(todayGerman));
}