public void ProductTest()
        {
            HarderArithmetic h = new HarderArithmetic();

            // test ArithmeticClassLibrary HarderArithmetic.Product one way
            Assert.IsTrue(10 == h.Product(5, 2));
        }
        public void QuotientTest()
        {
            HarderArithmetic h = new HarderArithmetic();

            // test ArithmeticClassLIbrary HarderArithmetic.Quotient for
            // quotients with and without a remainder.
            Assert.IsTrue(2 == h.Quotient(5, 2));
            Assert.IsTrue(2 == h.Quotient(4, 2));
        }