public void BasketsController_Update_Basket_Order_Line_Return_Correct_Updated_Order_Line() { var baskets = new InMemoryDataStore <Basket>(); var products = new InMemoryDataStore <Product>(); products.Seed(); baskets.Seed(products); var bc = new BasketsController(products, baskets, _mapper); var actionResult = bc.PatchOrderLine(_testBasketId, _testProductId, new JsonPatchDocument <OrderLineUpdateDto>().Add(p => p.Quantity, 12)); OkObjectResult okresult = actionResult as OkObjectResult; Assert.IsNotNull(okresult); OrderLineDto resultOrderLine = okresult.Value as OrderLineDto; Assert.IsNotNull(resultOrderLine); Assert.IsTrue(resultOrderLine.Quantity == 12); OrderLine orderline = null; baskets.Get(_testBasketId)?.OrderLines.TryGetValue(resultOrderLine.ProductId, out orderline); Assert.IsNotNull(orderline); Assert.IsTrue(orderline.Quantity == 12); }