def test_fire_SingleHandlerSingleArgument_HandlerCalledAsFunctionWithArgument(self):
handler = SingleArgumentHandler()
event = Event()
event.register(handler)
event.fire('arg 1')
self.assertEqual('arg 1', handler.argument)
def test_fire_TwoHandlers_BothHandlersCalledAsFunction(self):
handlerOne = SingleArgumentHandler()
handlerTwo = SingleArgumentHandler()
event = Event()
event.register(handlerOne)
event.register(handlerTwo)
event.fire('arg 1')
self.assertEqual('arg 1', handlerOne.argument)
self.assertEqual('arg 1', handlerTwo.argument)
def test_fire_SingleHandlerTwoArguments_HandlerCalledAsFunctionWithBothArguments(self):
class Handler:
def __init__(self):
self.arguments = []
def __call__(self, argumentOne, argumentTwo):
self.arguments.append(argumentOne)
self.arguments.append(argumentTwo)
handler = Handler()
event = Event()
event.register(handler)
event.fire('arg 1', 'arg 2')
self.assertEqual(['arg 1', 'arg 2'], handler.arguments)
def test_fire_SameHandlerRegisteredTwice_HandlerOnlyCalledOnce(self):
class CallCountHandler:
def __init__(self):
self.callCount = 0
def __call__(self, argument):
self.callCount += 1
handler = CallCountHandler()
event = Event()
event.register(handler)
event.register(handler)
event.fire('arg 1')
self.assertEqual(1, handler.callCount)