public void TestStartNumberSetting() { Dispenser dispenser = FormatParser.Parse(_testSerailNumberFormatString); var expectedSerialNumber = "TEST20180517-乙Y39"; dispenser.SetStartNumber(expectedSerialNumber); var startSerialNumber = dispenser.First(); Assert.AreEqual(expectedSerialNumber, startSerialNumber); var sencondSerialNumber = dispenser.Skip(1).First(); Assert.AreEqual("TEST20180517-乙Y40", sencondSerialNumber); }