public Order Checkout()
{
var subTotal = _items.Values.Select(cartItem => cartItem.TotalPrice).Sum();
var discounts = _discountStore.GetDiscounts().SelectMany(d => d.Apply(_items.Values)).ToList();
var discountsAmount = discounts.Select(d => d.Amount).Sum();
var total = subTotal - discountsAmount;
return(new Order(subTotal, total, discounts));
}
public CartTests()
{
Milk = new Product("Milk", 1.0m);
Bread = new Product("Bread", 1.5m);
Apples = new Product("Apples", 1.25m);
DiscountStore = Substitute.For <IDiscountStore>();
Sut = new Cart(DiscountStore);
DiscountStore.GetDiscounts().Returns(new List <Discount>());
}
