def setUp(self):
     self.working_path = tempfile.mkdtemp()
     self.harvester = WeiboHarvester(self.working_path)
     self.harvester.state_store = DictHarvestStateStore()
     self.harvester.result = HarvestResult()
     self.harvester.stop_harvest_seeds_event = threading.Event()
     self.harvester.message = base_timeline_message