Method test_exception_sequence

Lib/test/test_iter.py:396–409

(self)

    # Test exception propagation through sequence iterator
    def test_exception_sequence(self):
        class MySequenceClass(SequenceClass):
            def __getitem__(self, i):
                if i == 10:
                    raise RuntimeError
                return SequenceClass.__getitem__(self, i)
        res = []
        try:
            for x in MySequenceClass(20):
                res.append(x)
        except RuntimeError:
            self.assertEqual(res, list(range(10)))
        else:
            self.fail("should have raised RuntimeError")

    # Test for StopIteration from __getitem__
    def test_stop_sequence(self):