public void ShouldSaveProductCategory()
        {
            var supplierId = Guid.NewGuid();
            var model      = new ProductCategoryRequestModel()
            {
                SupplierId   = supplierId,
                CategoryName = "celular"
            };

            _supplierService.ExistsById(supplierId).Returns(true);

            _productService.Create(model);

            _productRepository.Received(1)
            .Create(Arg.Is <ProductCategory>(x => x.CategoryName.ToString() == "celular" && x.SupplierId == supplierId));
        }