def open(self): if not self._is_open: if not self.fake: self._detach() os.chdir(self.workdir) if self.umask is not None: os.umask(self.umask) if self.after_chdir: self.after_chdir() if not self.fake: # We need to keep /dev/urandom from closing because # shelve needs it, and Beat needs shelve to start. keep = list(self.stdfds) + fd_by_path(['/dev/urandom']) close_open_fds(keep) for fd in self.stdfds: self.redirect_to_null(maybe_fileno(fd)) if self.after_forkers and mputil is not None: mputil._run_after_forkers() self._is_open = True
def test_maybe_fileno(): assert maybe_fileno(3) == 3 f = Mock(name='file') assert maybe_fileno(f) is f.fileno() f.fileno.side_effect = ValueError() assert maybe_fileno(f) is None
def test_maybe_fileno(self): self.assertEqual(maybe_fileno(3), 3) f = Mock(name='file') self.assertIs(maybe_fileno(f), f.fileno()) f.fileno.side_effect = ValueError() self.assertIsNone(maybe_fileno(f))