public float ShippingFeeTest(float orderAmount)
        {
            var item1 = new Item()
            {
                Quantity  = 1,
                UnitPrice = orderAmount
            };
            var list = new List <Item>();

            list.Add(item1);

            var result = ProductsController.CalculateTotal(list);

            return(result);
        }
        public float totalOrderAmountCalculationTest(int quantityItem1, float priceItem1, int quantityItem2, float priceItem2)
        {
            var item1 = new Item()
            {
                Quantity  = quantityItem1,
                UnitPrice = priceItem1
            };
            var item2 = new Item()
            {
                Quantity  = quantityItem2,
                UnitPrice = priceItem2
            };
            var list = new List <Item> ();

            list.Add(item1);
            list.Add(item2);

            var result = ProductsController.CalculateTotal(list);

            return(result);
        }