def test_shahexdigest():

->     hex = py.__pkg__.shahexdigest()

       assert len(hex) == 40

   def shahexdigest(self, cache=[]):

       """ return sha hexdigest for files contained in package. """

       if cache:

           return cache[0]

       from sha import sha

       sum = sha()

       # XXX the checksum depends on the order in which visit() enumerates

       # the files, and it doesn't depend on the file names and paths

->     for x in self._iterfiles():

           sum.update(x.read())

       cache.append(sum.hexdigest())

       return cache[0]

   def _iterfiles(self):

       from py.__.path.common import checker

       base = self.getpath()

       for x in base.visit(checker(file=1, notext='.pyc'),

->                         rec=checker(dotfile=0)):

           yield x