public void now() {

    LocalDate expected = LocalDate.now(Clock.systemDefaultZone());
    LocalDate test = LocalDate.now();
    for (int i = 0; i < 100; i++) {
      if (expected.equals(test)) {
        return;
      }
      expected = LocalDate.now(Clock.systemDefaultZone());
      test = LocalDate.now();
    }
    assertEquals(test, expected);
  }

  // -----------------------------------------------------------------------
  // now(ZoneId)
  // -----------------------------------------------------------------------
  @Test(expectedExceptions = NullPointerException.class, groups = { "tck" }