Method test_getitem

Lib/test/mapping_tests.py:545–571

(self)

class TestHashMappingProtocol(TestMappingProtocol):

    def test_getitem(self):
        TestMappingProtocol.test_getitem(self)
        class Exc(Exception): pass

        class BadEq(object):
            def __eq__(self, other):
                raise Exc()
            def __hash__(self):
                return 24

        d = self._empty_mapping()
        d[BadEq()] = 42
        self.assertRaises(KeyError, d.__getitem__, 23)

        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.__getitem__, x)

    def test_fromkeys(self):
        TestMappingProtocol.test_fromkeys(self)