public void Define_QuantityDiscountPricingRule_A_5_for_the_Price_of_4()
{
QuantityDiscountPricingRule rule = new QuantityDiscountPricingRule("A", 5, 4);
int discountQty = rule.GetTotalDiscountQuantity(5);
decimal expectedDiscountQty = 4;
Assert.AreEqual(expectedDiscountQty, discountQty);
}
public decimal GetItemTotalPrice(string item, int totalQuantity)
{
IEnumerable <IPricingRule> sortedRules = this.GetPricingRulesSortedByPriority();
var sortedItemRules = sortedRules.Where(r => r.Sku == item);
decimal itemTotalPrice = 0;
int restQuantity = totalQuantity;
bool foundQtyDiscountRule = false;
foreach (var itemRule in sortedItemRules)
{
if (!foundQtyDiscountRule)
{
QuantityDiscountPricingRule qtyDiscountRule = itemRule as QuantityDiscountPricingRule;
if (qtyDiscountRule != null)
{
foundQtyDiscountRule = true;
restQuantity = qtyDiscountRule.GetTotalDiscountQuantity(restQuantity);
continue;
}
}
else
{
// ignore the other quantity discount rules
}
QuantityPricingRule qtyRule = itemRule as QuantityPricingRule;
if (qtyRule != null)
{
int multiple = restQuantity / qtyRule.Quantity;
restQuantity = restQuantity % qtyRule.Quantity;
itemTotalPrice += qtyRule.GetPrice() * multiple;
continue;
}
}
return(itemTotalPrice);
}
public void AddQuantityDiscountPricingRule(QuantityDiscountPricingRule rule)
{
pricingRuleList.Add(rule);
}
public void QuantityDiscountPricingRule_Quantity_LessThan_DiscountQuantity_Throws_Exception()
{
QuantityDiscountPricingRule rule = new QuantityDiscountPricingRule("A", 2, 3);
}
public void AddQuantityDiscountPricingRule(QuantityDiscountPricingRule rule)
{
pricingRuleList.Add(rule);
}