test_finder.py 文件源码

def test_no_read_directory(self):
        # Issue #16730
        tempdir = tempfile.TemporaryDirectory()
        original_mode = os.stat(tempdir.name).st_mode
        def cleanup(tempdir):
            """Cleanup function for the temporary directory.

            Since we muck with the permissions, we want to set them back to
            their original values to make sure the directory can be properly
            cleaned up.

            """
            os.chmod(tempdir.name, original_mode)
            # If this is not explicitly called then the __del__ method is used,
            # but since already mucking around might as well explicitly clean
            # up.
            tempdir.__exit__(None, None, None)
        self.addCleanup(cleanup, tempdir)
        os.chmod(tempdir.name, stat.S_IWUSR | stat.S_IXUSR)
        finder = self.get_finder(tempdir.name)
        self.assertEqual((None, []), finder.find_loader('doesnotexist'))