test_types_extras.py 文件源码

def test_wrong_schema(self):
        oid = self._create_type("type_ii", [("a", "integer"), ("b", "integer")])
        from psycopg2.extras import CompositeCaster
        c = CompositeCaster('type_ii', oid, [('a', 23), ('b', 23), ('c', 23)])
        curs = self.conn.cursor()
        psycopg2.extensions.register_type(c.typecaster, curs)
        curs.execute("select (1,2)::type_ii")
        self.assertRaises(psycopg2.DataError, curs.fetchone)