private static ShoppingCart CreateNewShoppingCart(string shoppingCartId)
{
ShoppingCart shoppingCart;
shoppingCart = new ShoppingCart(new List<ShoppingCartItem>())
{
ShoppingCartId = shoppingCartId,
Currency = "USD",
TaxRate = .09
};
return shoppingCart;
}
public void Get_GetsShoppingCartForUser()
{
var shoppingCart = new ShoppingCart(new ObservableCollection<ShoppingCartItem>()) { FullPrice = 200, TotalDiscount = 100 };
var shoppingCartRepository = new MockShoppingCartRepository();
shoppingCartRepository.GetByIdDelegate = (userId) =>
{
return shoppingCart;
};
var target = new ShoppingCartController(shoppingCartRepository, new MockProductRepository());
var result = target.Get("JohnDoe");
Assert.AreEqual(result, shoppingCart);
}
private static void UpdatePrices(ShoppingCart shoppingCart)
{
double fullPrice = 0, discount = 0;
foreach (var shoppingCartItem in shoppingCart.ShoppingCartItems)
{
fullPrice += shoppingCartItem.Product.ListPrice * shoppingCartItem.Quantity;
discount += fullPrice * shoppingCartItem.Product.DiscountPercentage/100;
shoppingCart.FullPrice = fullPrice;
shoppingCart.TotalDiscount = discount;
shoppingCart.TotalPrice = fullPrice - discount;
}
}
public bool RemoveItemFromCart(ShoppingCart shoppingCart, string itemId)
{
lock (_lock)
{
if (shoppingCart == null)
{
throw new ArgumentNullException("shoppingCart");
}
ShoppingCartItem item = shoppingCart.ShoppingCartItems.FirstOrDefault(i => i.Id == itemId);
bool itemRemoved = shoppingCart.ShoppingCartItems.Remove(item);
if (itemRemoved)
{
UpdatePrices(shoppingCart);
}
return itemRemoved;
}
}
bool IShoppingCartRepository.RemoveItemFromCart(ShoppingCart shoppingCart, string itemId)
{
return RemoveItemFromCartDelegate(shoppingCart, itemId);
}