// -----------------------------------------------------------------------
public void testWithFieldAdded1() {
DateTime test = new DateTime(2004, 6, 9, 0, 0, 0, 0);
DateTime result = test.withFieldAdded(DurationFieldType.years(), 6);
assertEquals(new DateTime(2004, 6, 9, 0, 0, 0, 0), test);
assertEquals(new DateTime(2010, 6, 9, 0, 0, 0, 0), result);
}
public void testWithFieldAdded3() {
DateTime test = new DateTime(2004, 6, 9, 0, 0, 0, 0);
try {
test.withFieldAdded(null, 6);
fail();
} catch (IllegalArgumentException ex) {
}
}
private void testAdd(Date start, DurationFieldType type, int amt, Date end) {
DateTime dtStart = new DateTime(start, ISOChronology.getInstanceUTC());
DateTime dtEnd = new DateTime(end, ISOChronology.getInstanceUTC());
assertEquals(dtEnd, dtStart.withFieldAdded(type, amt));
assertEquals(dtStart, dtEnd.withFieldAdded(type, -amt));
DurationField field = type.getField(ISOChronology.getInstanceUTC());
int diff = field.getDifference(dtEnd.getMillis(), dtStart.getMillis());
assertEquals(amt, diff);
if (type == DurationFieldType.years()
|| type == DurationFieldType.months()
|| type == DurationFieldType.days()) {
LocalDate ymdStart = new LocalDate(start, ISOChronology.getInstanceUTC());
LocalDate ymdEnd = new LocalDate(end, ISOChronology.getInstanceUTC());
assertEquals(ymdEnd, ymdStart.withFieldAdded(type, amt));
assertEquals(ymdStart, ymdEnd.withFieldAdded(type, -amt));
}
}
public void testWithFieldAdded4() {
DateTime test = new DateTime(2004, 6, 9, 0, 0, 0, 0);
DateTime result = test.withFieldAdded(DurationFieldType.years(), 0);
assertSame(test, result);
}