@DataProvider(name = "sampleToString")
  Object[][] provider_sampleToString() {

    return new Object[][] { { 11, 30, 59, 0, "Z", "11:30:59Z" }, { 11, 30, 59, 0, "+01:00", "11:30:59+01:00" },
        { 11, 30, 59, 999000000, "Z", "11:30:59.999Z" }, { 11, 30, 59, 999000000, "+01:00", "11:30:59.999+01:00" },
        { 11, 30, 59, 999000, "Z", "11:30:59.000999Z" }, { 11, 30, 59, 999000, "+01:00", "11:30:59.000999+01:00" },
        { 11, 30, 59, 999, "Z", "11:30:59.000000999Z" }, { 11, 30, 59, 999, "+01:00", "11:30:59.000000999+01:00" }, };
  }

  @Test(dataProvider = "sampleToString", groups = { "tck" }