'Check that an empty update does not make any modifying requests.'

def test_empty(self):

    self.register_get_user_response(self.user, subscribed_thread_ids=['test_thread'])
    self.register_thread()
    update_thread(self.request, 'test_thread', {})
    for request in httpretty.httpretty.latest_requests:
        self.assertEqual(request.method, 'GET')
