public void test_toString(int y, int m, int d, int h, int mi, int s, int n, String expected) {

    LocalDateTime t = LocalDateTime.of(y, m, d, h, mi, s, n);
    String str = t.toString();
    assertEquals(str, expected);
  }

  // -----------------------------------------------------------------------
  // toString(DateTimeFormatter)
  // -----------------------------------------------------------------------
  @Test(groups = { "tck" }