public void ConvertTo19()
        {
            long arab = RomanNumeralConverter.Convert("XIX");

            Assert.AreEqual(19, arab);
        }
        public void ConvertTo1()
        {
            long arab = RomanNumeralConverter.Convert("I");

            Assert.AreEqual(1, arab);
        }
        public void ConvertTo8()
        {
            long arab = RomanNumeralConverter.Convert("VIII");

            Assert.AreEqual(8, arab);
        }
        public void ConvertTo5()
        {
            long arab = RomanNumeralConverter.Convert("V");

            Assert.AreEqual(5, arab);
        }
        public void ConvertTo1580()
        {
            long arab = RomanNumeralConverter.Convert("MDLXXX");

            Assert.AreEqual(1580, arab);
        }
        public void ConvertTo49()
        {
            long arab = RomanNumeralConverter.Convert("IL");

            Assert.AreEqual(49, arab);
        }