public void Validate_NoSearchCriteria_ShouldBeInvalid()
        {
            AdvancedSearchModel model = new AdvancedSearchModel();

            var validationResults = model.Validate(null);

            Assert.IsTrue(validationResults.Any());
        }
        public void Validate_Valid_ShouldBeInvalid()
        {
            AdvancedSearchModel model = new AdvancedSearchModel {
                MasteryRequirement = "1f,2,x3,6-9,"
            };

            var validationResults = model.Validate(null);

            Assert.IsTrue(validationResults.Any());
        }