public RedirectToRouteResult RemoveFromCart(Cart cart,int productId, string returnUrl)
{
Product product = repository.Products
.FirstOrDefault(p => p.ProductID == productId);
if (product != null) {
cart.RemoveItem(product);
}
return RedirectToAction("Index", new { returnUrl });
}
public void Can_Remove_Line()
{
Product p1 = new Product { ProductID = 1, Name = "P1", Price = 100 };
Product p2 = new Product { ProductID = 2, Name = "P2", Price = 100 };
Product p3 = new Product { ProductID = 3, Name = "P3", Price = 100 };
Product p4 = new Product { ProductID = 4, Name = "P4", Price = 100 };
//创建一个购物车
Cart cart = new Cart();
cart.AddItem(p1, 10);
cart.AddItem(p2, 2);
cart.AddItem(p1, 3);
cart.RemoveItem(p2);
Assert.AreEqual(cart.Lines.Count(c => c.Product == p2), 0);
Assert.AreEqual(cart.Lines.First(p => p.Product==p1).Quantity, 13);
}