public void test_minus_adjuster() {

    MockSimplePeriod period = MockSimplePeriod.of(7, ChronoUnit.MONTHS);
    ZonedDateTime t = ZonedDateTime.of(LocalDateTime.of(2008, 6, 1, 12, 30, 59, 500), ZONE_0100);
    ZonedDateTime expected = ZonedDateTime.of(LocalDateTime.of(2007, 11, 1, 12, 30, 59, 500), ZONE_0100);
    assertEquals(t.minus(period), expected);
  }

  @Test(groups = { "tck" }