ioloop_test.py 文件源码

def test_remove_timeout_cleanup(self):
        # Add and remove enough callbacks to trigger cleanup.
        # Not a very thorough test, but it ensures that the cleanup code
        # gets executed and doesn't blow up.  This test is only really useful
        # on PollIOLoop subclasses, but it should run silently on any
        # implementation.
        for i in range(2000):
            timeout = self.io_loop.add_timeout(self.io_loop.time() + 3600,
                                               lambda: None)
            self.io_loop.remove_timeout(timeout)
        # HACK: wait two IOLoop iterations for the GC to happen.
        self.io_loop.add_callback(lambda: self.io_loop.add_callback(self.stop))
        self.wait()