public void test_toEpochSecond_beforeEpoch() {

    LocalDateTime ldt = LocalDateTime.of(1970, 1, 1, 0, 0).plusHours(1);
    for (int i = 0; i < 100000; i++) {
      ZonedDateTime a = ZonedDateTime.of(ldt, ZONE_PARIS);
      assertEquals(a.toEpochSecond(), -i);
      ldt = ldt.minusSeconds(1);
    }
  }

  @Test(groups = { "tck" }