public void Compare_DifferentValues_ReturnsOneAsDouble()
        {
            string val1   = "5011";
            string val2   = "5211";
            double actual = comparator.Compare(val1, val2);

            Console.WriteLine(String.Format("Compare result = {0}", actual));
            Assert.IsInstanceOf <double>(actual);
            Assert.AreEqual(1.0, actual);
        }