public void DiscountIsOneMilkWhenSevenMilkAndFourRequired() { SingleDiscountCalculator milkDiscount = new SingleDiscountCalculator(milk, 4, 1); Dictionary <Product, int> sevenMilk = new Dictionary <Product, int> { { milk, 7 } }; decimal discount = milkDiscount.CalculateDiscount(sevenMilk); decimal expectedDiscount = milk.Cost; Assert.AreEqual(expectedDiscount, discount); }
public void DiscountIsTwoMilkWhenEightMilkAndFourRequired() { SingleDiscountCalculator milkDiscount = new SingleDiscountCalculator(milk, 4, 1); Dictionary <Product, int> eightMilk = new Dictionary <Product, int> { { milk, 8 } }; decimal discount = milkDiscount.CalculateDiscount(eightMilk); decimal expectedDiscount = milk.Cost * 2; Assert.AreEqual(expectedDiscount, discount); }
public void DiscountIsZeroWhenThreeMilkAndFourRequired() { SingleDiscountCalculator milkDiscount = new SingleDiscountCalculator(milk, 4, 1); Dictionary <Product, int> threeMilk = new Dictionary <Product, int> { { milk, 3 } }; decimal discount = milkDiscount.CalculateDiscount(threeMilk); decimal expectedDiscount = 0; Assert.AreEqual(expectedDiscount, discount); }