def test_with_since(self):
        old_thread = self.create_thread(recipient=self.user)
        new_thread = self.create_thread(recipient=self.user)
        Thread.objects.filter(
            pk=new_thread.pk).update(modified_at=now() + timedelta(hours=10))
        response = self.client.get(
            reverse('thread_json'),
            {'since': str(int(time.time() + 100))}
        )
        self.assertNotContains(response, old_thread.first_message.snippet)
        self.assertContains(response, new_thread.first_message.snippet)
Response should only have newer messages.
dataset/ETHPy150Open ofa/connect/open_connect/connectmessages/tests/test_views.py/ThreadJSONListViewTest.test_with_since