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 copy(self, target, archive=False):

       """ copy path to target."""

       assert not archive, "XXX archive-mode not supported"

       if self.check(file=1):

           if target.check(dir=1):

               target = target.join(self.basename)

           assert self!=target

->         copychunked(self, target)

       else:

           target.ensure(dir=1)

           def rec(p):

               return p.check(link=0)

           for x in self.visit(rec=rec):

               relpath = x.relto(self)

               newx = target.join(relpath)

               if x.check(link=1):

                   newx.mksymlinkto(x.readlink())

               elif x.check(file=1):

                   copychunked(x, newx)

               elif x.check(dir=1):

                   newx.ensure(dir=1)

   def copychunked(src, dest):

       chunksize = 524288 # half a meg of bytes

       fsrc = src.open('rb')

       try:

->         fdest = dest.open('wb')

           try:

               while 1:

                   buf = fsrc.read(chunksize)

                   if not buf:

                       break

                   fdest.write(buf)

           finally:

               fdest.close()

       finally:

           fsrc.close()