test_lobject.py 文件源码

def test_truncate_larger_than_2gb(self):
        lo = self.conn.lobject()
        length = 1 << 32  # 4gb
        self.assertRaises(
            (OverflowError, psycopg2.InterfaceError, psycopg2.NotSupportedError),
            lo.truncate, length)