public void LengthRange_Message_AreEqual() { const string column = "LengthRange"; const string message = "測試{0}{1}{2}"; int min = 2; int max = 4; IFormValidator validator = provider.LengthRange(min, max, message)(column, "12345"); validator.Validate(); Assert.AreEqual(validator.ErrorMessage, string.Format(message, column, min, max)); }