public void test_minusDays_maximum() {

    OffsetDate t = OffsetDate.of(Year.MAX_YEAR, 12, 30, OFFSET_PONE).minusDays(-1);
    OffsetDate expected = OffsetDate.of(Year.MAX_YEAR, 12, 31, OFFSET_PONE);
    assertEquals(t, expected);
  }

  @Test(groups = { "tck" }