Method test_setdefault

Lib/test/mapping_tests.py:661–678

(self)

        self.assertRaises(Exc, lambda: d1==d2)

    def test_setdefault(self):
        TestMappingProtocol.test_setdefault(self)

        class Exc(Exception): pass

        class BadHash(object):
            fail = False
            def __hash__(self):
                if self.fail:
                    raise Exc()
                else:
                    return 42

        d = self._empty_mapping()
        x = BadHash()
        d[x] = 42
        x.fail = True
        self.assertRaises(Exc, d.setdefault, x, [])