public void test_minusYears_long_big() {

    YearMonth test = YearMonth.of(40, 6);
    assertEquals(test.minusYears(20L + Year.MAX_YEAR), YearMonth.of((int) (40L - 20L - Year.MAX_YEAR), 6));
  }

  @Test(expectedExceptions = DateTimeException.class, groups = { "tck" }