public async Task CheckoutBasket() { var response = await _controller.CheckoutBasket(0); Assert.IsInstanceOf <BadRequestObjectResult>(response.Result); await _storage.AddOrUpdateItemAsync(new Item { Id = 1, Price = 1 }); var id = await _storage.InitBasketAsync(); response = await _controller.AddItemToBasket(id, 1, 1); response = await _controller.CheckoutBasket(id); Assert.IsInstanceOf <OkObjectResult>(response.Result); }