public void NumericValidator_GetClientValidationRules() {
            // Arrange
            ModelMetadata metadata = _metadataProvider.GetMetadataForProperty(null, typeof(SampleModel), "Int32");
            var validator = new ClientDataTypeModelValidatorProvider.NumericModelValidator(metadata, new ControllerContext());

            // Act
            ModelClientValidationRule[] rules = validator.GetClientValidationRules().ToArray();

            // Assert
            Assert.AreEqual(1, rules.Length, "Wrong number of rules returned.");

            ModelClientValidationRule rule = rules[0];
            Assert.AreEqual("number", rule.ValidationType);
            Assert.AreEqual(0, rule.ValidationParameters.Count);
            Assert.AreEqual("The field Int32 must be a number.", rule.ErrorMessage);
        }
        public void NumericValidator_Validate_ReturnsEmptyCollection() {
            // Arrange
            ModelMetadata metadata = _metadataProvider.GetMetadataForType(null, typeof(object));
            var validator = new ClientDataTypeModelValidatorProvider.NumericModelValidator(metadata, new ControllerContext());

            // Act
            IEnumerable<ModelValidationResult> result = validator.Validate(null);

            // Assert
            Assert.AreEqual(0, result.Count(), "Shouldn't have been any errors.");
        }