code: def test_job_create_gcs(self, mock_hook):
      mock_hook.return_value.create_transfer_job.return_value = (
          VALID_TRANSFER_JOB_GCS
      )
      body = deepcopy(VALID_TRANSFER_JOB_GCS)
      del body["name"]
      op = CloudDataTransferServiceCreateJobOperator(
          body=body,
          task_id=TASK_ID,
          google_impersonation_chain=IMPERSONATION_CHAIN,
      )
      result = op.execute(context=mock.MagicMock())
  
      mock_hook.assert_called_once_with(
          api_version="v1",
          gcp_conn_id="google_cloud_default",
          impersonation_chain=IMPERSONATION_CHAIN,
      )
  
      mock_hook.return_value.create_transfer_job.assert_called_once_with(
          body=VALID_TRANSFER_JOB_GCS_RAW
      )
  
      assert result == VALID_TRANSFER_JOB_GCS
  
imports: from __future__ import annotations
  from copy import deepcopy
  from datetime import date, time
  from unittest import mock
  import pytest
  import time_machine
  from botocore.credentials import Credentials
  from airflow.exceptions import AirflowException
  from airflow.providers.google.cloud.hooks.cloud_storage_transfer_service import ACCESS_KEY_ID, AWS_ACCESS_KEY, AWS_S3_DATA_SOURCE, BUCKET_NAME, FILTER_JOB_NAMES, GCS_DATA_SINK, GCS_DATA_SOURCE, HTTP_DATA_SOURCE, LIST_URL, NAME, PATH, SCHEDULE, SCHEDULE_END_DATE, SCHEDULE_START_DATE, SECRET_ACCESS_KEY, START_TIME_OF_DAY, STATUS, TRANSFER_SPEC
  from airflow.providers.google.cloud.operators.cloud_storage_transfer_service import CloudDataTransferServiceCancelOperationOperator, CloudDataTransferServiceCreateJobOperator, CloudDataTransferServiceDeleteJobOperator, CloudDataTransferServiceGCSToGCSOperator, CloudDataTransferServiceGetOperationOperator, CloudDataTransferServiceListOperationsOperator, CloudDataTransferServicePauseOperationOperator, CloudDataTransferServiceResumeOperationOperator, CloudDataTransferServiceS3ToGCSOperator, CloudDataTransferServiceUpdateJobOperator, TransferJobPreprocessor, TransferJobValidator
  from airflow.utils import timezone
label_desc: Use image node_id 1 for calling the TestGcpStorageTransferJobCreateOperator obj's underlying member method code with example usage: obj.test_job_create_gcs(mock_hook) without return types