def test_event_future():
queue = core.EventQueue()
handler = core.EventHandler(queue)
fut = handler.get_future("test")
# If we ask again, we should get the same one.
assert handler.get_future("test") == fut
event = core.Event("test")
handler.dispatch_event(event)
assert fut.done()
assert not fut.cancelled()
assert fut.result() == event
def test_event_future_cancel():
# This is a very strange thing to do, but it's possible, so let's make
# sure it gives defined behavior.
queue = core.EventQueue()
handler = core.EventHandler(queue)
fut = handler.get_future("test")
fut.cancel()
assert fut.done()
assert fut.cancelled()
event = core.Event("test")
handler.dispatch_event(event)
assert fut.done()
assert fut.cancelled()