test_dbm.py 文件源码

def test_whichdb(self):
        for module in dbm_iterator():
            # Check whether whichdb correctly guesses module name
            # for databases opened with "module" module.
            # Try with empty files first
            name = module.__name__
            if name == 'dbm.dumb':
                continue   # whichdb can't support dbm.dumb
            delete_files()
            f = module.open(_fname, 'c')
            f.close()
            self.assertEqual(name, self.dbm.whichdb(_fname))
            # Now add a key
            f = module.open(_fname, 'w')
            f[b"1"] = b"1"
            # and test that we can find it
            self.assertIn(b"1", f)
            # and read it
            self.assertTrue(f[b"1"] == b"1")
            f.close()
            self.assertEqual(name, self.dbm.whichdb(_fname))