public async Task Add_Variant_to_Product() { using (var uow = The <IUnitOfWorkManager>().Begin()) { Product product = await _productRepository.FirstOrDefaultAsync(x => x.Title == "Adidas Awesome Sneaker"); product.AddVariant("barcode_1", "43"); await uow.CompleteAsync(); } await UsingDbContextAsync <ProductDbContext>(async context => { ProductVariant productVariant = await context.ProductVariants.FirstOrDefaultAsync(v => v.Barcode == "barcode_1"); productVariant.ShouldNotBeNull(); productVariant.Product.Title.ShouldBe("Adidas Awesome Sneaker"); }); }