public void ValidCreation()
        {
            List <string> list = new List <string>();

            list.Add("create_product");
            list.Add("P1");
            list.Add("100");
            list.Add("1000");
            string response = _createProductHandler.Execute(list);

            Console.WriteLine(response);
            Assert.AreEqual(response, "Product created; code P1, price 100, stock 1000");
        }