public async void Description_Update_length()
        {
            Mock <IProductDescriptionRepository> productDescriptionRepository = new Mock <IProductDescriptionRepository>();

            productDescriptionRepository.Setup(x => x.Get(It.IsAny <int>())).Returns(Task.FromResult(new ProductDescription()));

            var validator = new ApiProductDescriptionRequestModelValidator(productDescriptionRepository.Object);
            await validator.ValidateUpdateAsync(default(int), new ApiProductDescriptionRequestModel());

            validator.ShouldHaveValidationErrorFor(x => x.Description, new string('A', 401));
        }
        public async void Description_Create_null()
        {
            Mock <IProductDescriptionRepository> productDescriptionRepository = new Mock <IProductDescriptionRepository>();

            productDescriptionRepository.Setup(x => x.Get(It.IsAny <int>())).Returns(Task.FromResult(new ProductDescription()));

            var validator = new ApiProductDescriptionRequestModelValidator(productDescriptionRepository.Object);
            await validator.ValidateCreateAsync(new ApiProductDescriptionRequestModel());

            validator.ShouldHaveValidationErrorFor(x => x.Description, null as string);
        }