@Test
public void testToIso()
{

    Assert.assertEquals( new DateTimeUnit( 2014, 4, 14, true ), calendar.toIso( new DateTimeUnit( 2071, 1, 1 ) ) );
    Assert.assertEquals( new DateTimeUnit( 2014, 4, 14, true ), calendar.toIso( 2071, 1, 1 ) );
}