Method test_matching_blocks_cache

Lib/test/test_difflib.py:89–96

(self)

        self.assertRaises(StopIteration, next, diff_gen)

    def test_matching_blocks_cache(self):
        # Issue #21635
        s = difflib.SequenceMatcher(None, "abxcd", "abcd")
        first = s.get_matching_blocks()
        second = s.get_matching_blocks()
        self.assertEqual(second[0].size, 2)
        self.assertEqual(second[1].size, 2)
        self.assertEqual(second[2].size, 0)

    def test_added_tab_hint(self):
        # Check fix for bug #1488943