@Test
public void testMinusMonthsOverflow() throws Exception {
try {
testDate.minusMonths(Integer.MAX_VALUE);
fail();
} catch (IllegalCalendarFieldValueException ex) {
assertEquals(ex.getRule(), MinguoChronology.yearOfEraRule());
}
}
// -----------------------------------------------------------------------
// minusMonths()
// -----------------------------------------------------------------------
@Test
public void testMinusMonths() {
assertEquals(
testDate.minusMonths(1),
MinguoDate.of(testYear, testMonthOfYear.previous(), testDayOfMonth));
}