Method test_except_throw_bad_exception

Lib/test/test_generators.py:537–561

(self)

        self.assertIsNone(sys.exception())

    def test_except_throw_bad_exception(self):
        class E(Exception):
            def __new__(cls, *args, **kwargs):
                return cls

        def boring_generator():
            yield

        gen = boring_generator()

        err_msg = 'should have returned an instance of BaseException'

        with self.assertRaisesRegex(TypeError, err_msg):
            gen.throw(E)

        self.assertRaises(StopIteration, next, gen)

        def generator():
            with self.assertRaisesRegex(TypeError, err_msg):
                yield

        gen = generator()
        next(gen)
        with self.assertRaises(StopIteration):
            gen.throw(E)

    def test_gen_3_arg_deprecation_warning(self):
        def g():