@Test
public void testFromIso()
{

    assertEquals( new DateTimeUnit( 1372, 1, 1, false ),
        calendar.fromIso( new DateTimeUnit( 1993, 3, 21, true ) ) );
    assertEquals( new DateTimeUnit( 1399, 1, 1, false ),
        calendar.fromIso( new DateTimeUnit( 2020, 3, 20, true ) ) );
    assertEquals( new DateTimeUnit( 1383, 1, 1, false ),
        calendar.fromIso( new DateTimeUnit( 2004, 3, 20, true ) ) );
    assertEquals( new DateTimeUnit( 1383, 1, 1, false ),
        calendar.fromIso( new DateTimeUnit( 1383, 1, 1, true ) ) );
}