public void DateTimeLessThan_Message_AreEqual() { const string column = "Column"; const string comparisonColumn = "Comparison Column"; const string message = "測試{0}必須小於{1}"; IFormValidator validator = provider.DateTimeLessThan(comparisonColumn, "2020/01/01", false, message)(column, "2020/01/01"); validator.Validate(); Assert.AreEqual(validator.ErrorMessage, string.Format(message, column, comparisonColumn)); }