public void test_minus_Period_invalidTooSmall() {

    MockSimplePeriod period = MockSimplePeriod.of(1, ChronoUnit.YEARS);
    LocalDate.of(Year.MIN_YEAR, 1, 1).minus(period);
  }

  // -----------------------------------------------------------------------
  // minus(long,PeriodUnit)
  // -----------------------------------------------------------------------
  @Test(groups = { "tck" }