test_csv.py 文件源码

def test_invalid_chars(self):
        def create_invalid(field_name, value):
            class mydialect(csv.Dialect):
                pass
            setattr(mydialect, field_name, value)
            d = mydialect()

        for field_name in ("delimiter", "escapechar", "quotechar"):
            with self.subTest(field_name=field_name):
                self.assertRaises(csv.Error, create_invalid, field_name, "")
                self.assertRaises(csv.Error, create_invalid, field_name, "abc")
                self.assertRaises(csv.Error, create_invalid, field_name, b'x')
                self.assertRaises(csv.Error, create_invalid, field_name, 5)