test_sql.py 文件源码

def test_join(self):
        obj = sql.SQL(", ").join(
            [sql.Identifier('foo'), sql.SQL('bar'), sql.Literal(42)])
        self.assertTrue(isinstance(obj, sql.Composed))
        self.assertEqual(obj.as_string(self.conn), '"foo", bar, 42')

        obj = sql.SQL(", ").join(
            sql.Composed([sql.Identifier('foo'), sql.SQL('bar'), sql.Literal(42)]))
        self.assertTrue(isinstance(obj, sql.Composed))
        self.assertEqual(obj.as_string(self.conn), '"foo", bar, 42')

        obj = sql.SQL(", ").join([])
        self.assertEqual(obj, sql.Composed([]))