private void verifyLastMiddleFirstName(string source, string firstName, string middleName, string lastName) { Tuple <String, String, String> name = NameUtil.lastMiddleFirstName(source); if (firstName == null) { Assert.Null(name); return; } Assert.Equal(firstName, name.Item1); Assert.Equal(middleName, name.Item2); Assert.Equal(lastName, name.Item3); }