def test_doctest_extra_exec(): 

       # XXX get rid of the next line: 

       py.magic.autopath().dirpath('conftest.py').copy(tmpdir.join('conftest.py'))

       xtxt = tmpdir.join('y.txt')

       xtxt.write(py.code.Source("""

           hello::

               .. >>> raise ValueError 

                  >>> None

       """))

->     config = py.test.config._reparse([xtxt]) 

       session = config.initsession()

       session.main()

       l = session.getitemoutcomepairs(Failed) 

       assert len(l) == 1

   def _reparse(self, args):

       """ this is used from tests that want to re-invoke parse(). """

       #assert args # XXX should not be empty

       global config_per_process

       oldconfig = py.test.config

       try:

           config_per_process = py.test.config = Config()

->         config_per_process.parse(args) 

           return config_per_process

       finally: 

           config_per_process = py.test.config = oldconfig 

   def parse(self, args): 

       """ parse cmdline arguments into this config object. 

               Note that this can only be called once per testing process. 

           """ 

       assert not self._initialized, (

               "can only parse cmdline args once per Config object")

       self._initialized = True

->     adddefaultoptions(self)

       self._conftest.setinitial(args) 

       args = [str(x) for x in args]

       cmdlineoption, args = self._parser.parse_args(args) 

       self.option.__dict__.update(vars(cmdlineoption))

       if not args:

           args.append(py.std.os.getcwd())

       self.topdir = gettopdir(args)

       self.args = args 

   def adddefaultoptions(config):

       Option = config.Option 

       config._addoptions('general options',

           Option('-v', '--verbose',

                  action="count", dest="verbose", default=0,

->                help="increase verbosity."),

           Option('-x', '--exitfirst',

                  action="store_true", dest="exitfirst", default=False,

                  help="exit instantly on first error or failed test."),

           Option('-s', '--nocapture',

                  action="store_true", dest="nocapture", default=False,

                  help="disable catching of sys.stdout/stderr output."),

           Option('-k',

                  action="store", dest="keyword", default='',

                  help="only run test items matching the given (google-style) "

                       "keyword expression."),

           Option('-l', '--showlocals',

                  action="store_true", dest="showlocals", default=False,

                  help="show locals in tracebacks (disabled by default)."),

           Option('', '--pdb',

                  action="store_true", dest="usepdb", default=False,

                  help="start pdb (the Python debugger) on errors."),

           Option('', '--tb',

                  action="store", dest="tbstyle", default='long',

                  type="choice", choices=['long', 'short', 'no'],

                  help="traceback verboseness (long/short/no)."),

           Option('', '--fulltrace',

                  action="store_true", dest="fulltrace", default=False,

                  help="don't cut any tracebacks (default is to cut)."),

           Option('', '--nomagic',

                  action="store_true", dest="nomagic", default=False,

                  help="refrain from using magic as much as possible."),

           Option('', '--collectonly',

                  action="store_true", dest="collectonly", default=False,

                  help="only collect tests, don't execute them."),

           Option('', '--traceconfig',

                  action="store_true", dest="traceconfig", default=False,

                  help="trace considerations of conftest.py files."),

           Option('-f', '--looponfailing',

                  action="store_true", dest="looponfailing", default=False,

                  help="loop on failing test set."),

           Option('', '--exec',

                  action="store", dest="executable", default=None,

                  help="python executable to run the tests with."),

       )

       config._addoptions('EXPERIMENTAL options',

           Option('-d', '--dist',

                  action="store_true", dest="dist", default=False,

                  help="ad-hoc distribute tests across machines (requires conftest settings)"), 

           Option('-w', '--startserver',

                  action="store_true", dest="startserver", default=False,

                  help="starts local web server for displaying test progress.", 

                  ),

           Option('-r', '--runbrowser',

                  action="store_true", dest="runbrowser", default=False,

                  help="run browser (implies --startserver)."

                  ),

           Option('', '--boxed',

                  action="store_true", dest="boxed", default=False,

                  help="box each test run in a separate process"), 

           Option('', '--rest',

                  action='store_true', dest="restreport", default=False,

                  help="restructured text output reporting."),

           Option('', '--apigen',

                  action="store", dest="apigen",

                  help="generate api documentation while testing (requires "

                  "argument pointing to a script)."),

           Option('', '--session',

                  action="store", dest="session", default=None,

                  help="lookup given sessioname in conftest.py files and use it."), 

       )