public void Sample1_1stx1_100()
        {
            var            shoppingCart   = new ShoppingCart();
            List <Product> productsOfCart = new List <Product>()
            {
                new Product(Name: "Harry Potter 1", Price: 100, Amount: 1)
            };

            var expected = 100;

            var actual = shoppingCart.CalculatePrice(productsOfCart);

            Assert.AreEqual(expected, actual);
        }
        public void Sample7_1stX1_2ndX2_3rdX2_460()
        {
            var            shoppingCart   = new ShoppingCart();
            List <Product> productsOfCart = new List <Product>()
            {
                new Product(Name: "Harry Potter 1", Price: 100, Amount: 1),
                new Product(Name: "Harry Potter 2", Price: 100, Amount: 2),
                new Product(Name: "Harry Potter 3", Price: 100, Amount: 2)
            };

            var expected = 460;

            var actual = shoppingCart.CalculatePrice(productsOfCart);

            Assert.AreEqual(expected, actual);
        }