def test_order(self):
        assert (event.Priority.PRE_CORE
                > event.Priority.CORE
                > event.Priority.POST_CORE
                > event.Priority.PRE_DEFAULT
                > event.Priority.DEFAULT
                > event.Priority.POST_DEFAULT)
def __init__(self, key, child_proxy):
        try:
            self._key = int(key)
        except ValueError:
            self._key = key
        self._child_proxy = child_proxy