public async void DeleteFromCart()
        {
            #region Arrange
            var options = new DbContextOptionsBuilder <AspnetAPIContext>()
                          .UseInMemoryDatabase(databaseName: "AspnetAPI2")
                          .Options;

            await using (var context = new AspnetAPIContext(options))
            {
                context.Add(new Cart()
                {
                    Quantity = 40,
                    Product  = new Product()
                    {
                        Name  = "Test",
                        Price = 0
                    }
                });
                await context.SaveChangesAsync();
            }

            Cart removedFromCart = null;
            int  cartSize        = 1;
            #endregion

            #region Act

            await using (var context = new AspnetAPIContext(options))
            {
                var controller = new CartController(context);
                removedFromCart = (await controller.DeleteFromCart(1)).Value;
                cartSize        = await context.Cart.CountAsync();
            }
            #endregion

            #region Assert
            Assert.Equal(0, cartSize);
            Assert.Equal(1, removedFromCart.ProductId);
            Assert.Equal(40, removedFromCart.Quantity);
            #endregion
        }