code: def test_execute(self, mock_tempfile, mock_modify, mock_hook):
      mapping = {"a": "b"}
      filename = "file/"
      mock_tempfile.return_value.__enter__.return_value.name = filename
  
      op = GoogleAnalyticsModifyFileHeadersDataImportOperator(
          storage_bucket=BUCKET,
          storage_name_object=BUCKET_OBJECT_NAME,
          custom_dimension_header_mapping=mapping,
          gcp_conn_id=GCP_CONN_ID,
          task_id="test_task",
          impersonation_chain=IMPERSONATION_CHAIN,
      )
      op.execute(context=None)
  
      mock_hook.assert_called_once_with(
          gcp_conn_id=GCP_CONN_ID,
          delegate_to=None,
          impersonation_chain=IMPERSONATION_CHAIN,
      )
  
      mock_hook.return_value.download.assert_called_once_with(
          bucket_name=BUCKET,
          object_name=BUCKET_OBJECT_NAME,
          filename=filename,
      )
  
      mock_modify.assert_called_once_with(
          tmp_file_location=filename,
          custom_dimension_header_mapping=mapping,
      )
  
      mock_hook.return_value.upload(
          bucket_name=BUCKET,
          object_name=BUCKET_OBJECT_NAME,
          filename=filename,
      )
  
file_path: airflow/tests/providers/google/marketing_platform/operators/test_analytics.py
imports: from __future__ import annotations
  from tempfile import NamedTemporaryFile
  from unittest import mock
  from airflow.providers.google.marketing_platform.operators.analytics import GoogleAnalyticsDataImportUploadOperator, GoogleAnalyticsDeletePreviousDataUploadsOperator, GoogleAnalyticsGetAdsLinkOperator, GoogleAnalyticsListAccountsOperator, GoogleAnalyticsModifyFileHeadersDataImportOperator, GoogleAnalyticsRetrieveAdsLinksListOperator
label_desc: Use image node_id 2 for calling the TestGoogleAnalyticsModifyFileHeadersDataImportOperator obj's underlying member method code with example usage: obj.test_execute(mock_tempfile, mock_modify, mock_hook) without return types