Method test_immutable

Lib/test/test_re.py:2919–2928

(self)

    @cpython_only
    def test_immutable(self):
        # bpo-43908: check that re types are immutable
        with self.assertRaises(TypeError):
            re.Match.foo = 1
        with self.assertRaises(TypeError):
            re.Pattern.foo = 1
        with self.assertRaises(TypeError):
            pat = re.compile("")
            tp = type(pat.scanner(""))
            tp.foo = 1

    def test_overlap_table(self):
        f = re._compiler._generate_overlap_table