private ValidationMessage BetweenLength(
string value,
int minLength,
int maxLength,
ValidationMessageType validationMessageType = ValidationMessageType.Error)
{
var betweenLengthValidator = new LengthValidator <TestValidatableObject>(_ => minLength, _ => maxLength, validationMessageType);
var context = new ValidationContext <TestValidatableObject, string>(null, nameof(TestValidatableObject.Number), null, value);
var validationMessage = betweenLengthValidator.ValidateProperty(context).FirstOrDefault();
return(validationMessage);
}
