public void ShouldReturn0WhenNoBagOfPogs()
{
// Arrange
var basket = new Basket(new DiscountProvider(), new GiftProvider());
// Sut
var discountCalculator = new BagOfPogsDiscountCalculator();
// Act
var discount = discountCalculator.CalculateDiscount(basket);
// Assert
Assert.IsTrue(discount == 0);
}
public void ShouldReturn0WhenOneBagOfPogs()
{
// Arrange
var basket = new Basket(new DiscountProvider(), new GiftProvider());
basket.AddBasketItem(new Product(_bagOfPogsId, "Bag of Pogs", 1));
// Sut
var discountCalculator = new BagOfPogsDiscountCalculator();
// Act
var discount = discountCalculator.CalculateDiscount(basket);
// Assert
Assert.IsTrue(discount == 0, "Discount should be 0");
}
public void ShouldReturnDiscountWhenTwoBagOfPogs()
{
// Arrange
var bagPrice = 2M;
var basket = new Basket(new DiscountProvider(), new GiftProvider());
basket.AddBasketItem(new Product(_bagOfPogsId, "Bag of Pogs", bagPrice));
basket.AddBasketItem(new Product(_bagOfPogsId, "Bag of Pogs", bagPrice));
// Sut
var discountCalculator = new BagOfPogsDiscountCalculator();
// Act
var discount = discountCalculator.CalculateDiscount(basket);
// Assert
var expectedDiscount = (bagPrice / 2);
Assert.IsTrue(discount == expectedDiscount, "Discount returned should be half of price of one bag. Discount: {0} Expected: {1}", discount, expectedDiscount);
}
