fix test since moving self.task_id definition to __init__

tests/conftest.py

@@ -237,9 +237,9 @@ def mock_base_worker_with_cache(mocker, monkeypatch, mock_worker_run_api):
     """Build a BaseWorker using SQLite cache, also mocking a PONOS_TASK"""
     monkeypatch.setattr(sys, "argv", ["worker"])
 
+    monkeypatch.setenv("PONOS_TASK", "my_task")
     worker = BaseWorker(support_cache=True)
     worker.setup_api_client()
-    monkeypatch.setenv("PONOS_TASK", "my_task")
     return worker