void myFunc(double x, string result)
        {
            var pc  = new PrefixConversion();
            var res = pc.UnitConversion(x);

            Console.WriteLine(res);
            Assert.AreEqual(res, result);
        }
        public void TestMethod1()
        {
            var pc  = new PrefixConversion();
            var res = pc.UnitConversion(1.0E7);

            Console.WriteLine(res);
            Assert.AreEqual(res, "10 M");
        }