public void Checkout_Cart_Empty()
{
IPolicy policy = new PurchaseOfferPolicy();
policy.Add(new PurchaseRule("A", 3, 130M));
IProductService productService = new ProductService();
Checkout checkout = new Checkout(policy, productService);
Assert.AreEqual(0, checkout.Total);
}
public void Checkout_Cart_Item_3AB()
{
IPolicy policy = new PurchaseOfferPolicy();
IRule rule = new PurchaseRule("A", 3, 130M);
policy.Add(rule);
IProductService productService = new ProductService();
Checkout checkout = new Checkout(policy, productService);
checkout.ScanItem("A");
checkout.ScanItem("B");
checkout.ScanItem("A");
checkout.ScanItem("A");
Assert.AreEqual(160, checkout.Total);
}
