public async Task Add_Product_To_Shopping_Cart_Should_Not_Be_Null()
{
// Arrange
var product = new CartProductViewModel()
{
CartId = 1,
ProductId = 1,
};
_cartServiceMock.Setup(x => x.AddProductToCart(product)).Returns(Task.FromResult(product));
// Act
var result = await _shoppingCartController.AddProductToShoppingCart(product);
// Assert
var objectResult = result as OkObjectResult;
Assert.NotNull(objectResult);
var content = objectResult.Value as CartProductViewModel;
Assert.NotNull(content);
}