Method test_fails_before_timeout

tornado/test/gen_test.py:744–751

(self)

    @gen_test
    def test_fails_before_timeout(self):
        future = Future()  # type: Future[str]
        self.io_loop.add_timeout(
            datetime.timedelta(seconds=0.1),
            lambda: future.set_exception(ZeroDivisionError()),
        )
        with self.assertRaises(ZeroDivisionError):
            yield gen.with_timeout(datetime.timedelta(seconds=3600), future)

    @gen_test
    def test_already_resolved(self):