private Order OrderWithSingleProductOfPriceAndMaxTotalCost(Money productPrice, Money limit)
{
Order order = new Order(OrderLimit.LimitedBy(limit));
order.AddNewProduct(ProductOfValue(productPrice));
return(order);
}
private Money Recalculate()
{
var totalCost = Items.Select(x => x.Cost()).Aggregate((x, y) => x.Add(y));
var discount = _discountPolicy(this);
totalCost = totalCost.MultiplyBy(1 - discount);
if (OrderLimit.IsExceededBy(totalCost))
{
throw new OrderMaxTotalCostExceeded();
}
return(totalCost);
}
public Order(OrderLimit limit)
{
_discountPolicy = DefaultPolicy();
Id = GenerateId();
OrderLimit = limit;
}
public Order()
{
_discountPolicy = DefaultPolicy();
Id = GenerateId();
OrderLimit = OrderLimit.Unlimited();
}