public void Add(Product prod, int qty)
{
OrderItem oi = new OrderItem();
oi.Product = prod;
oi.Qty = qty;
items.Add(oi);
}
public void D1WhenBuying2ApplyOnlyOnSecondItem()
{
Product p = new Product();
p.Sku = "100.1";
p.Name = "Umbrella";
p.Price = 20;
Order order = new Order();
order.Add(p, 2);
DiscountEngine de = new DiscountEngine();
de.CalculateDiscount(order);
Assert.AreEqual(6, order.Discount);
}
public void D1NotAppliedWhenBuying1Item()
{
//setup
Product p = new Product();
p.Sku = "100.1";
p.Name = "Umbrella";
p.Price = 20;
Order order = new Order();
order.Add(p,1);
DiscountEngine de = new DiscountEngine();
//exercise
de.CalculateDiscount(order);
//verify
Assert.AreEqual(0, order.Discount);
}