def testMediatorReregistration(self):
"""
Tests registering the same mediator twice.
A subsequent notification should only illicit
one response. Also, since reregistration
was causing 2 observers to be created, ensure
that after removal of the mediator there will
be no further response.
Added for the fix deployed in version 2.0.4
"""
view = View('test')
view.register_mediator(utils.view.ViewTestMediator5(self))
# try to register another instance of that mediator (uses the same NAME constant).
view.register_mediator(utils.view.ViewTestMediator5(self))
self.counter = 0
view.notify_observers(Notification(self.NOTE5))
self.assertEqual(1, self.counter)
view.remove_mediator(utils.view.ViewTestMediator5.NAME)
self.assertEqual(True, view.retrieve_mediator(utils.view.ViewTestMediator5.NAME ) is None)
self.counter=0
view.notify_observers(Notification(self.NOTE5))
self.assertEqual(0, self.counter)
def testRemoveOneOfTwoMediatorsAndSubsequentNotify(self):
"""ViewTest: Test removing one of two Mediators and subsequent notify()"""
view = View('test')
view.register_mediator(utils.view.ViewTestMediator2(self))
view.register_mediator(utils.view.ViewTestMediator3(self))
view.notify_observers(Notification(self.NOTE1))
self.assertEqual(True, self.lastNotification == self.NOTE1)
view.notify_observers(Notification(self.NOTE2))
self.assertEqual(True, self.lastNotification == self.NOTE2)
view.notify_observers(Notification(self.NOTE3))
self.assertEqual(True, self.lastNotification == self.NOTE3)
view.remove_mediator(utils.view.ViewTestMediator2.NAME)
self.assertEqual(True, view.retrieve_mediator(utils.view.ViewTestMediator2.NAME) is None)
self.lastNotification = None
view.notify_observers(Notification(self.NOTE1))
self.assertEqual(True, self.lastNotification != self.NOTE1)
view.notify_observers(Notification(self.NOTE2))
self.assertEqual(True, self.lastNotification != self.NOTE2)
view.notify_observers(Notification(self.NOTE3))
self.assertEqual(True, self.lastNotification == self.NOTE3)
self.__cleanup()
def testRemoveSelf(self):
view = View('test')
view.register_mediator(utils.view.ViewTestMediator2(self))
view.register_mediator(utils.view.ViewTestMediator3(self))
self.assertTrue(self.NOTE5 in view.observer_map)
view.notify_observers(Notification(self.NOTE5))
self.assertFalse(self.NOTE5 in view.observer_map)
def testRegisterAndRetrieveMediator(self):
"""ViewTest: Test register_mediator() and retrieve_mediator()"""
view = View('test')
viewTestMediator = utils.view.ViewTestMediator(self)
view.register_mediator(viewTestMediator)
mediator = view.retrieve_mediator(utils.view.ViewTestMediator.NAME)
self.assertEqual(True, isinstance(mediator, utils.view.ViewTestMediator))
self.__cleanup()
def testHasMediator(self):
"""ViewTest: Test has_mediator()"""
view = View('test')
meditr = Mediator('hasMediatorTest', self)
view.register_mediator(meditr)
self.assertEqual(True, view.has_mediator('hasMediatorTest'))
view.remove_mediator('hasMediatorTest')
self.assertEqual(False, view.has_mediator('hasMediatorTest'))
self.__cleanup()
def testOnRegisterAndOnRemove(self):
"""ViewTest: Test onRegsiter() and on_remove()"""
view = View('test')
mediator = utils.view.ViewTestMediator4(self)
view.register_mediator(mediator)
self.assertEqual(True, self.onRegisterCalled)
view.remove_mediator(utils.view.ViewTestMediator4.NAME)
self.assertEqual(True, self.onRemoveCalled)
self.__cleanup()
def testRegisterAndRemoveMediator(self):
"""ViewTest: Test register_mediator() and remove_mediator()"""
view = View('test')
meditr = Mediator('testing', self)
view.register_mediator(meditr)
removedMediator = view.remove_mediator('testing')
self.assertEqual(True, removedMediator.get_mediator_name() == 'testing')
self.assertEqual(True, view.retrieve_mediator('testing') is None)
self.__cleanup()
def testSuccessiveRegisterAndRemoveMediator(self):
"""ViewTest: Test Successive register_mediator() and remove_mediator()"""
view = View('test')
view.register_mediator(utils.view.ViewTestMediator(self))
self.assertEqual(True, isinstance(view.retrieve_mediator(utils.view.ViewTestMediator.NAME), utils.view.ViewTestMediator))
view.remove_mediator(utils.view.ViewTestMediator.NAME)
self.assertEqual(True, view.retrieve_mediator(utils.view.ViewTestMediator.NAME) is None)
self.assertEqual(True, view.remove_mediator(utils.view.ViewTestMediator.NAME) is None)
view.register_mediator(utils.view.ViewTestMediator(self))
self.assertEqual(True, isinstance(view.retrieve_mediator(utils.view.ViewTestMediator.NAME), utils.view.ViewTestMediator))
view.remove_mediator(utils.view.ViewTestMediator.NAME)
self.assertEqual(True, view.retrieve_mediator(utils.view.ViewTestMediator.NAME) is None)
self.__cleanup()
