Please help in Client Side Validation mvc

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C#

MVC

In Ui added Scripts jquery.validate.js , jquery.unobtrusive-ajax.min.js , jquery.validate.unobtrusive.min.js

<script src="/Content/Common/jquery-1.8.3.min.js"></script>
    <script src="/Content/Common/jquery-ui-1.10.1.custom.min.js"></script>
    <script src="/Content/Common/jquery.validate.js" type="text/javascript"></script>
        <script src="/Content/Common/jquery.unobtrusive-ajax.min.js" type="text/javascript"></script>
    <script src="/Content/Common/jquery.validate.unobtrusive.min.js" type="text/javascript"></script>

public class DateValidationCurrentLessThan : ValidationAttribute, IClientValidatable
   {
       protected override ValidationResult IsValid(object value, ValidationContext validationContext)
       {
           if (value != null)
           {
               var thisDate = (DateTime)value;
               if (thisDate > DateTime.Now)
               {
                   var message = FormatErrorMessage(validationContext.DisplayName);
                   return new ValidationResult(message);
               }
           }
           return ValidationResult.Success;
       }


       public IEnumerable<ModelClientValidationRule>  GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
       {
           ModelClientValidationRule dateGreaterThanRule = new ModelClientValidationRule();
           dateGreaterThanRule.ErrorMessage = FormatErrorMessage(metadata.DisplayName);
           dateGreaterThanRule.ValidationType = "dategreaterthan"; // This is the name the jQuery adapter will use
           //"otherpropertyname" is the name of the jQuery parameter for the adapter, must be LOWERCASE!
           dateGreaterThanRule.ValidationParameters.Add("otherpropertyname", "2");

           yield return dateGreaterThanRule;
       }
   }

but in UT nothing is coming in while rendering

it is not rendering

data-val-dategreaterthan="The field  is invalid." data-val-dategreaterthan-otherpropertyname="2"