test_dbm_dumb.py 文件源码

def test_dumbdbm_creation_mode(self):
        # On platforms without chmod, don't do anything.
        if not (hasattr(os, 'chmod') and hasattr(os, 'umask')):
            return

        try:
            old_umask = os.umask(0o002)
            f = dumbdbm.open(_fname, 'c', 0o637)
            f.close()
        finally:
            os.umask(old_umask)

        expected_mode = 0o635
        if os.name != 'posix':
            # Windows only supports setting the read-only attribute.
            # This shouldn't fail, but doesn't work like Unix either.
            expected_mode = 0o666

        import stat
        st = os.stat(_fname + '.dat')
        self.assertEqual(stat.S_IMODE(st.st_mode), expected_mode)
        st = os.stat(_fname + '.dir')
        self.assertEqual(stat.S_IMODE(st.st_mode), expected_mode)