def METHOD_NAME(self):
    def handler(sender, instance, history_instance, **kwargs):
        self.signal_was_called = True
        self.signal_instance = instance
        self.signal_history_instance = history_instance
        self.signal_sender = sender
    post_create_historical_record.connect(handler)
    p = Poll(question="what's up?", pub_date=today)
    p.save()
    self.assertTrue(self.signal_was_called)
    self.assertEqual(self.signal_instance, p)
    self.assertIsNotNone(self.signal_history_instance)
    self.assertEqual(self.signal_sender, p.history.first().__class__)