public void Calculate_returns_discount_for_correct_item(string itemName, int quantity, int discount, decimal expected) { var lstItems = new List <ShoppingCartItem> { new ShoppingCartItem { Id = 1, Product = new Product { Id = 10, Name = "ItemA", Price = 1.1M }, Quantity = 20 }, new ShoppingCartItem { Id = 2, Product = new Product { Id = 11, Name = "ItemB", Price = 2.22M }, Quantity = 21 }, new ShoppingCartItem { Id = 3, Product = new Product { Id = 12, Name = "ItemC", Price = 3.333M }, Quantity = 22 } }; var decorator = new QuantityDiscountDecorator(null, itemName, quantity, discount); var result = decorator.Calculate(lstItems); Assert.Equal(expected, result); }
public void Calculate_returns_zero_for_emptylist() { var decorator = new QuantityDiscountDecorator(null, "", 0, 0); var result = decorator.Calculate(new List <ShoppingCartItem>()); Assert.Equal(0, result); }