def test_assert_valid_hook_call(self, mock_hook):
     task = CloudMemorystoreFailoverInstanceOperator(
         task_id=TEST_TASK_ID,
         location=TEST_LOCATION,
         instance=TEST_INSTANCE_NAME,
         data_protection_mode=TEST_DATA_PROTECTION_MODE,
         project_id=TEST_PROJECT_ID,
         retry=TEST_RETRY,
         timeout=TEST_TIMEOUT,
         metadata=TEST_METADATA,
         gcp_conn_id=TEST_GCP_CONN_ID,
         impersonation_chain=TEST_IMPERSONATION_CHAIN,
     )
     task.execute(context=mock.MagicMock())
     mock_hook.assert_called_once_with(
         gcp_conn_id=TEST_GCP_CONN_ID,
         impersonation_chain=TEST_IMPERSONATION_CHAIN,
     )
     mock_hook.return_value.failover_instance.assert_called_once_with(
         location=TEST_LOCATION,
         instance=TEST_INSTANCE_NAME,
         data_protection_mode=TEST_DATA_PROTECTION_MODE,
         project_id=TEST_PROJECT_ID,
         retry=TEST_RETRY,
         timeout=TEST_TIMEOUT,
         metadata=TEST_METADATA,
     )
        project_id=GCP_PROJECT_ID,
        do_xcom_push=True,
    )
    # [END howto_operator_get_instance]

    # [START howto_operator_get_instance_result]
    get_instance_result = BashOperator(
        task_id="get-instance-result",
        bash_command="echo \"{{ task_instance.xcom_pull('get-instance') }}\"")
    # [END howto_operator_get_instance_result]

    # [START howto_operator_failover_instance]
    failover_instance = CloudMemorystoreFailoverInstanceOperator(
        task_id="failover-instance",
        location="europe-north1",
        instance=INSTANCE_NAME_2,
        data_protection_mode=FailoverInstanceRequest.DataProtectionMode.
        LIMITED_DATA_LOSS,
        project_id=GCP_PROJECT_ID,
    )
    # [END howto_operator_failover_instance]

    # [START howto_operator_list_instances]
    list_instances = CloudMemorystoreListInstancesOperator(
        task_id="list-instances",
        location="-",
        page_size=100,
        project_id=GCP_PROJECT_ID)
    # [END howto_operator_list_instances]

    # [START howto_operator_list_instances_result]
    list_instances_result = BashOperator(