public void AddCartModelTest()
{
var cardRepoMock = new Mock <ICartRepo>();
var cartMangerMock = new CartManager(cardRepoMock.Object);
var cartControllerMock = new CartController(cartMangerMock);
CartModel cartModel = new CartModel()
{
CartId = 6,
BookId = 6,
Count = 6
};
var result = cartControllerMock.AddCartModel(cartModel);
Assert.NotNull(result);
}