public void TestΙsEnoughProductsInBasketForOfferToApply()
{
OfferRedeemer offerRedeeemer = new OfferRedeemer();
IBasket myBasket = createBasket(4, 2); // 4 milks and 2 lettuces
IOffer offer = buy2MilksGet20percentOffOffer();
Assert.IsTrue(offerRedeeemer.isEnoughProductsInBasketForOfferToApply(myBasket, offer));
}
public void TestTimesTheOfferMustApply()
{
OfferRedeemer offerRedeeemer = new OfferRedeemer();
IBasket myBasket = createBasket(7, 2); // 7 milks and 2 lettuces
IOffer offer = buy2MilksGet20percentOffOffer();
Assert.AreEqual(3, offerRedeeemer.timesTheOfferMustApply(myBasket, offer), "The offer in this test should 3 times");
}
public void TestApplyOfferToBasket()
{
OfferRedeemer offerRedeeemer = new OfferRedeemer();
IBasket myBasket = createBasketWithUniqueProducts(); // 5 unique milks and 2 vegetables
IOffer offer = buy2MilksGet20percentOffOffer();
IBasket updatedBasket = offerRedeeemer.applyOfferAndGetBasket(myBasket, offer);
Assert.AreEqual(new decimal(178), updatedBasket.getGrandTotal(), "The total should be 2*24 + 3*30 + 2*20 = 178");
}
public void TestApplyOffersAndReturnTotalPrice()
{
OfferRedeemer offerRedeeemer = new OfferRedeemer();
IBasket myBasket = createBasketWithUniqueProducts(); // 5 unique milks and 2 vegetables
IOffer offerForDairy = buy2MilksGet20percentOffOffer();
IOffer offerForVegetables = buyOneVegetableGet5Off();
List <IOffer> offers = new List <IOffer>()
{
offerForDairy, offerForVegetables
};
decimal price = offerRedeeemer.applyOffersAndReturnTotalPrice(myBasket, offers);
Assert.AreEqual(new decimal(168), price, "The total should be 2*24 + 3*30 + 2*15 = 168");
}
