def test_interactionBetweenDifferentEvents(self):
"""
L{IReactorCore.fireSystemEvent} should behave the same way for a
particular system event regardless of whether Deferreds are being
waited on for a different system event.
"""
events = []
firstEvent = 'first-event'
firstDeferred = Deferred()
def beforeFirstEvent():
events.append(('before', 'first'))
return firstDeferred
def afterFirstEvent():
events.append(('after', 'first'))
secondEvent = 'second-event'
secondDeferred = Deferred()
def beforeSecondEvent():
events.append(('before', 'second'))
return secondDeferred
def afterSecondEvent():
events.append(('after', 'second'))
self.addTrigger('before', firstEvent, beforeFirstEvent)
self.addTrigger('after', firstEvent, afterFirstEvent)
self.addTrigger('before', secondEvent, beforeSecondEvent)
self.addTrigger('after', secondEvent, afterSecondEvent)
self.assertEqual(events, [])
# After this, firstEvent should be stuck before 'during' waiting for
# firstDeferred.
reactor.fireSystemEvent(firstEvent)
self.assertEqual(events, [('before', 'first')])
# After this, secondEvent should be stuck before 'during' waiting for
# secondDeferred.
reactor.fireSystemEvent(secondEvent)
self.assertEqual(events, [('before', 'first'), ('before', 'second')])
# After this, firstEvent should have finished completely, but
# secondEvent should be at the same place.
firstDeferred.callback(None)
self.assertEqual(events, [('before', 'first'), ('before', 'second'),
('after', 'first')])
# After this, secondEvent should have finished completely.
secondDeferred.callback(None)
self.assertEqual(events, [('before', 'first'), ('before', 'second'),
('after', 'first'), ('after', 'second')])
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