public void ScenarioATesting() { var orders = new List <Order>(); order = new Order { Id = 1, OrderId = 1, SkuCode = "C", Qty = 1, DiscountPercentage = Constant.ProductCDDiscount, ProductMinCountPromotion = Constant.ProductMinCountPromotionForCD, PromotionPriceTypeEnum = EnumHelper.PromotionPriceTypeEnum.Combination, UnitPrice = Constant.ProductCPrice }; orders.Add(order); var promotionEngine = new PromotionEngine(); var expected = promotionEngine.CalculatePromotion(orders); var actual = 100D; Assert.AreEqual(actual, expected); }