testSequence (SimpleParserTest)

    # File test/src/simple_parser_test.rb, line 75
      def testSequence
        assertParser('abc', ?c, sequence(char(?a),char('b'),char('c')))
        a = ?a
        relative = proc {|c|c-a}
        parser = sequence(
          char('c').map(&relative),
          char('b').map(&relative),
          char('a').map(&relative)
        ){|x,y,z| x+y+z}
        assertParser('cba', 3, parser)
      end