public void CalculateDiscount_Test7()
{
//Arrange
var discountRule = new BuyXDiscountTotal(TestData.ProductOne, 5, 30);
//Action
Action action = () => discountRule.CalculateDiscount(null);
//Asset
Assert.ThrowsException <ArgumentNullException>(action);
}
public void CalculateDiscount_Test4()
{
//Arrange
var basket = new Basket();
var discountRule = new BuyXDiscountTotal(TestData.ProductOne, 5, 30);
var expectedResult = 0;
//Action
var result = discountRule.CalculateDiscount(basket);
//Asset
Assert.AreEqual(expectedResult, result);
}