public void TestPricingRulesApplysSpecialPriceCorrectly()
{
var pricingRules = new PricingRules();
pricingRules.Add("A", 1, 50);
pricingRules.Add("A", 3, 130);
pricingRules.Add("B", 1, 30);
pricingRules.Add("B", 2, 45);
pricingRules.Add("C", 1, 20);
pricingRules.Add("D", 1, 15);
// 10 item A's, 9 will have offer applied
var expectedPrice = MultibuyCostOfItem3A * 3 + UnitCostOfItemA;
Assert.Equal(expectedPrice, pricingRules.GetPrice("A", 10));
// 5 item B's, 4 will have offer applied
var expectedPrice2 = MultibuyCostOfItem2B * 2 + UnitCostOfItemB;
Assert.Equal(expectedPrice2, pricingRules.GetPrice("B", 5));
}
public void TestPricingRulesReturnsCorrectCost()
{
var pricingRules = new PricingRules();
pricingRules.Add("A", 1, 50);
pricingRules.Add("A", 3, 130);
pricingRules.Add("B", 1, 30);
pricingRules.Add("B", 2, 45);
pricingRules.Add("C", 1, 20);
pricingRules.Add("D", 1, 15);
// single item
Assert.Equal(UnitCostOfItemA, pricingRules.GetPrice("A", 1));
Assert.Equal(UnitCostOfItemB, pricingRules.GetPrice("B", 1));
Assert.Equal(UnitCostOfItemC, pricingRules.GetPrice("C", 1));
Assert.Equal(UnitCostOfItemD, pricingRules.GetPrice("D", 1));
//multibuy
Assert.Equal(MultibuyCostOfItem3A, pricingRules.GetPrice("A", 3));
Assert.Equal(MultibuyCostOfItem2B, pricingRules.GetPrice("B", 2));
}