code: def test_execute_complete(self, mock):
      mock.return_value.get_job.return_value = JOB
      operator = CloudBatchSubmitJobOperator(
          task_id=TASK_ID,
          project_id=PROJECT_ID,
          region=REGION,
          job_name=JOB_NAME,
          job=JOB,
          deferrable=True,
      )
  
      event = {
          "status": "success",
          "job_name": JOB_NAME,
          "message": "test error",
      }
      completed_job = operator.execute_complete(
          context=mock.MagicMock(), event=event
      )
  
      assert completed_job["name"] == JOB_NAME
  
      mock.return_value.get_job.assert_called_once_with(
          job_name=JOB_NAME
      )
  
file_path: airflow/tests/providers/google/cloud/operators/test_cloud_batch.py
imports: from __future__ import annotations
  from unittest import mock
  import pytest
  from google.cloud import batch_v1
  from airflow.exceptions import AirflowException, TaskDeferred
  from airflow.providers.google.cloud.operators.cloud_batch import CloudBatchDeleteJobOperator, CloudBatchListJobsOperator, CloudBatchListTasksOperator, CloudBatchSubmitJobOperator
label_desc: Use image node_id 3 for calling the TestCloudBatchSubmitJobOperator obj's underlying member method code with example usage: obj.test_execute_complete(mock) without return types