code: def test_kill_job(self):
      self.client_mock.terminate_job.return_value = {}
      self.batch.on_kill()
      self.client_mock.terminate_job.assert_called_once_with(
          jobId=JOB_ID, reason="Task killed by the user"
      )
  
imports: from __future__ import annotations
  from unittest import mock
  from unittest.mock import patch
  import pytest
  from airflow.exceptions import AirflowException, AirflowProviderDeprecationWarning, TaskDeferred
  from airflow.providers.amazon.aws.hooks.batch_client import BatchClientHook
  from airflow.providers.amazon.aws.operators.batch import BatchCreateComputeEnvironmentOperator, BatchOperator
  from airflow.providers.amazon.aws.triggers.batch import BatchCreateComputeEnvironmentTrigger, BatchJobTrigger
label_desc: Use image node_id 8 for calling the TestBatchOperator obj's underlying member method code with example usage: obj.test_kill_job() without return types