public bool FailToFindToken(string text, int start)
        {
            StringLiteralToken token = new DoubleQuoteStringLiteralToken();
            int  end;
            bool result = token.Match(text, start, out end);

            return(result);
        }
        public void CrashTest(string text, int start)
        {
            TestDelegate testDelegate = new TestDelegate(() => {
                StringLiteralToken token = new DoubleQuoteStringLiteralToken();
                int next;
                token.Match(text, start, out next);
            });

            Assert.Catch <TokenParsingException>(testDelegate);
        }