public void Delivery_Should_Calculate()
{
var delivery = new Delivery(1, 1, 1);
var cart = new Cart();
cart.AddProduct(new Product("testProduct", 1, new Category("testCategory")), 1);
Assert.Equal(3, delivery.Calculate(cart));
}
public double GetDeliveryCost()
{
var delivery = new Delivery(5, 1, 3);
var deliveryAmount = delivery.Calculate(this);
return(deliveryAmount);
}