def test_dbm(self):
    code = textwrap.dedent(r"""
        import glob

        import test.support
        dbm = test.support.import_module('_dbm')
        _fname = test.support.TESTFN

        def delete_files():
            for f in glob.glob(_fname + "*"):
                test.support.unlink(f)

        f = dbm.open(_fname, 'n')
        f[b'g'] = b"indented"
        f.close()
       delete_files()
    """)
    ret = test.support.run_in_subinterp(code)
    self.assertEqual(ret, 0)