def set(self, instance, value, **kwargs):
if value:
addMarkerInterface(instance, *self.interfaces)
else:
removeMarkerInterface(instance, *self.interfaces)
def testAddAndRemoveSingleInterface(self):
obj=Mock()
addMarkerInterface(obj, MarkerInterface)
removeMarkerInterface(obj, MarkerInterface)
self.assertEqual(self.ifaces(obj), [])
def testAddTwoInterfacesAndRemoveOne(self):
obj=Mock()
addMarkerInterface(obj, MarkerInterface, SecondMarkerInterface)
removeMarkerInterface(obj, MarkerInterface)
self.assertEqual(self.ifaces(obj), ["SecondMarkerInterface"])
def testRemoveNonPresentInterface(self):
obj=Mock()
removeMarkerInterface(obj, MarkerInterface)
self.assertEqual(self.ifaces(obj), [])
