Class HugeNegativeLen

Lib/test/test_builtin.py:1341–1343

                return sys.maxsize + 1
        self.assertRaises(OverflowError, len, HugeLen())
        class HugeNegativeLen:
            def __len__(self):
                return -sys.maxsize-10
        self.assertRaises(ValueError, len, HugeNegativeLen())
        class NoLenMethod(object): pass
        self.assertRaises(TypeError, len, NoLenMethod())