java.time.LocalDate#minusMonths ( )源码实例Demo

@Test
public void test_ofDayOfMonth_previous_oneDay() {
  for (int start = 1; start <= 5; start++) {
    for (int i = 1; i <= 30; i++) {
      RollConvention test = RollConvention.ofDayOfMonth(i);
      LocalDate expected = date(2014, JULY, i);
      if (i >= start) {
        expected = expected.minusMonths(1);
      }
      assertThat(test.previous(date(2014, JULY, start), P1D)).isEqualTo(expected);
    }
  }
}
 

private LocalDate calculateIMMMonth(final boolean requestNextIMM, final LocalDate startDate, final Month month) {
    int monthOffset;
    LocalDate date = startDate;
    switch (month) {
    case MARCH:
    case JUNE:
    case SEPTEMBER:
    case DECEMBER:
        final LocalDate immDate = calculate3rdWednesday(date);
        if (requestNextIMM && !date.isBefore(immDate)) {
            date = date.plusMonths(MONTHS_IN_QUARTER);
        } else if (!requestNextIMM && !date.isAfter(immDate)) {
            date = date.minusMonths(MONTHS_IN_QUARTER);
        }
        break;

    default:
        if (requestNextIMM) {
            monthOffset = (MONTH_IN_YEAR - month.getValue()) % MONTHS_IN_QUARTER;
            date = date.plusMonths(monthOffset);
        } else {
            monthOffset = month.getValue() % MONTHS_IN_QUARTER;
            date = date.minusMonths(monthOffset);
        }
        break;
    }
    return date;
}
 

@Test
public void test_resolve() {
  FixedCouponBond base = sut();
  ResolvedFixedCouponBond resolved = base.resolve(REF_DATA);
  assertThat(resolved.getLegalEntityId()).isEqualTo(LEGAL_ENTITY);
  assertThat(resolved.getSettlementDateOffset()).isEqualTo(DATE_OFFSET);
  assertThat(resolved.getYieldConvention()).isEqualTo(YIELD_CONVENTION);
  ImmutableList<FixedCouponBondPaymentPeriod> periodicPayments = resolved.getPeriodicPayments();
  int expNum = 20;
  assertThat(periodicPayments).hasSize(expNum);
  LocalDate unadjustedEnd = END_DATE;
  Schedule unadjusted = PERIOD_SCHEDULE.createSchedule(REF_DATA).toUnadjusted();
  for (int i = 0; i < expNum; ++i) {
    FixedCouponBondPaymentPeriod payment = periodicPayments.get(expNum - 1 - i);
    assertThat(payment.getCurrency()).isEqualTo(EUR);
    assertThat(payment.getNotional()).isEqualTo(NOTIONAL);
    assertThat(payment.getFixedRate()).isEqualTo(FIXED_RATE);
    assertThat(payment.getUnadjustedEndDate()).isEqualTo(unadjustedEnd);
    assertThat(payment.getEndDate()).isEqualTo(BUSINESS_ADJUST.adjust(unadjustedEnd, REF_DATA));
    assertThat(payment.getPaymentDate()).isEqualTo(payment.getEndDate());
    LocalDate unadjustedStart = unadjustedEnd.minusMonths(6);
    assertThat(payment.getUnadjustedStartDate()).isEqualTo(unadjustedStart);
    assertThat(payment.getStartDate()).isEqualTo(BUSINESS_ADJUST.adjust(unadjustedStart, REF_DATA));
    assertThat(payment.getYearFraction()).isEqualTo(unadjusted.getPeriod(expNum - 1 - i).yearFraction(DAY_COUNT, unadjusted));
    assertThat(payment.getDetachmentDate()).isEqualTo(EX_COUPON.adjust(payment.getPaymentDate(), REF_DATA));
    unadjustedEnd = unadjustedStart;
  }
  Payment expectedPayment = Payment.of(CurrencyAmount.of(EUR, NOTIONAL), BUSINESS_ADJUST.adjust(END_DATE, REF_DATA));
  assertThat(resolved.getNominalPayment()).isEqualTo(expectedPayment);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMax() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MAX_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMin() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MIN_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMax() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MAX_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMax() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MAX_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMin() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MIN_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMax() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MAX_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMax() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MAX_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMax() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MAX_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMin() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MIN_VALUE);
}
 

@Test(expected=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMin() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MIN_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMin() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MIN_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMin() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MIN_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMax() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MAX_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMin() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MIN_VALUE);
}
 

@Test(expectedExceptions=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMax() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MAX_VALUE);
}
 

@Test(expected=DateTimeException.class)
public void test_minusMonths_long_invalidTooLargeMaxAddMax() {
    LocalDate test = LocalDate.of(Year.MAX_VALUE, 12, 1);
    test.minusMonths(Long.MAX_VALUE);
}
 

/**
 * 获取当天上个月的日期
 * @param minusMonth  为正数,如果为负数代表增加月份
 * @return: java.util.Date
 * @author: fruiqi
 * @date: 19-5-9 上午11:29
 */
public static Date acquireMonthByMinus(int minusMonth) {
	LocalDate now = LocalDate.now();
	LocalDate lastMonth = now.minusMonths(minusMonth);
	return acquireDateByLocalDate(lastMonth);
}