def on_timer(self, val):
        self.assertEqual(val, self.timer_stack.pop())
        if not self.timer_stack:
            self.ioloop.stop()
A timeout handler that verifies that the given parameter matches
dataset/ETHPy150Open pika/pika/tests/unit/select_connection_ioloop_tests.py/IOLoopTimerTestSelect.on_timer