public void test_getDOY(int y, int m, int d) {

    LocalDate a = LocalDate.of(y, m, d);
    int total = 0;
    for (int i = 1; i < m; i++) {
      total += Month.of(i).length(isIsoLeap(y));
    }
    int doy = total + d;
    assertEquals(a.getDayOfYear(), doy);
  }

  @Test(groups = { "tck" }