public void TestSpecialOffersAreApplied_OfferNotFullyCovered()
{
// Arrange
var calculator = new CheckoutCalculator();
var items = new CheckOutItemCollection();
items.Add(new CheckoutItem("B", 30));
items.Add(new CheckoutItem("A", 50));
var specialOffers = new List <ISpecialOffer>();
specialOffers.Add(new MultiBuySpecialOffer(2, "B", 45));
// Act
decimal total = calculator.Calculate(items, specialOffers);
// Assert
Assert.AreEqual(80, total);
}
public void TestItemCanBeIdentifiedBySKU()
{
// Arrange
var collection = new CheckOutItemCollection();
var a = new CheckoutItem("A", 50);
var b = new CheckoutItem("B", 30);
var c = new CheckoutItem("C", 20);
var d = new CheckoutItem("D", 15);
// Act
collection.Add(a);
collection.Add(b);
collection.Add(c);
collection.Add(d);
// Assert
Assert.AreEqual("A", collection["A"].SKU);
Assert.AreEqual("B", collection["B"].SKU);
Assert.AreEqual("C", collection["C"].SKU);
Assert.AreEqual("D", collection["D"].SKU);
}