public void ReturnValidationResults() { // Arrange var entityId = Guid.NewGuid().ToString(); var invalidEntity = new ValidatableEntity { NumericProperty = "ABC" }; var exception = new LeadPipeNetInvalidEntityException("This is a test.", entityId, invalidEntity.Validate()); // Act var validationResults = exception.GetValidationResultsAsList(); // Assert Assert.IsNotNull(validationResults.FirstOrDefault(x => x.Key.Equals("NumericProperty"))); }