hub_test.py 文件源码

def test_parent(self):
        """ Checks that a terminating greenthread whose parent
        was a previous, now-defunct hub greenlet returns execution to
        the hub runloop and not the hub greenlet's parent. """
        hub = hubs.get_hub()

        def dummyproc():
            pass

        g = eventlet.spawn(dummyproc)
        assert hub.greenlet.parent == eventlet.greenthread.getcurrent()
        self.assertRaises(KeyboardInterrupt, hub.greenlet.throw,
                          KeyboardInterrupt())

        assert not g.dead  # check dummyproc hasn't completed
        with eventlet.Timeout(0.5, self.CustomException()):
            # we now switch to the hub which will allow
            # completion of dummyproc.
            # this should return execution back to the runloop and not
            # this greenlet so that hub.switch() would block indefinitely.
            self.assertRaises(self.CustomException, hub.switch)
        assert g.dead  # sanity check that dummyproc has completed