public void MultiComboProductPromotionApply()
        {
            var _controller      = new PromotionEngineController();
            var selectedProducts = MultiComboProductPromotionData();
            var result           = _controller.ApplyPromotionOffer(selectedProducts);

            Assert.Equal(310, result);
        }
        public void NoPromotionOfferApply()
        {
            var _controller      = new PromotionEngineController();
            var selectedProducts = NoPromotionOfferData();
            var result           = _controller.ApplyPromotionOffer(selectedProducts);

            Assert.Equal(100, result);
        }