def test_set_dispatcher_creates_dispatcher_attribute(self):
da = DispatcherAware()
self.assertFalse(hasattr(da, 'dispatcher'))
da.set_dispatcher(None)
self.assertTrue(hasattr(da, 'dispatcher'))
self.assertIsNone(da.dispatcher)
def test_set_dispatcher_returns_instance_of_self(self):
da = DispatcherAware()
self.assertEqual(da.set_dispatcher(None), da)
