code: def test_execute_apply_gcs_prefix(
      self,
      gcs_mock_hook,
      s3_one_mock_hook,
      s3_two_mock_hook,
      apply_gcs_prefix,
      s3_prefix,
      s3_object,
      gcs_destination,
      gcs_object,
  ):
      operator = S3ToGCSOperator(
          task_id=TASK_ID,
          bucket=S3_BUCKET,
          prefix=s3_prefix,
          delimiter=S3_DELIMITER,
          gcp_conn_id=GCS_CONN_ID,
          dest_gcs=gcs_destination,
          google_impersonation_chain=IMPERSONATION_CHAIN,
          apply_gcs_prefix=apply_gcs_prefix,
      )
  
      s3_one_mock_hook.return_value.list_keys.return_value = [
          s3_prefix + s3_object
      ]
      s3_two_mock_hook.return_value.list_keys.return_value = [
          s3_prefix + s3_object
      ]
  
      uploaded_files = operator.execute(context={})
      gcs_mock_hook.return_value.upload.assert_has_calls(
          [
              mock.call(GCS_BUCKET, gcs_object, mock.ANY, gzip=False),
          ],
          any_order=True,
      )
  
      s3_one_mock_hook.assert_called_once_with(
          aws_conn_id=AWS_CONN_ID, verify=None
      )
      s3_two_mock_hook.assert_called_once_with(
          aws_conn_id=AWS_CONN_ID, verify=None
      )
      gcs_mock_hook.assert_called_once_with(
          gcp_conn_id=GCS_CONN_ID,
          impersonation_chain=IMPERSONATION_CHAIN,
      )
  
      assert sorted([s3_prefix + s3_object]) == sorted(uploaded_files)
  
imports: from __future__ import annotations
  from unittest import mock
  from unittest.mock import PropertyMock
  import pytest
  import time_machine
  from airflow.exceptions import AirflowException, TaskDeferred
  from airflow.providers.google.cloud.hooks.cloud_storage_transfer_service import CloudDataTransferServiceHook
  from airflow.providers.google.cloud.transfers.s3_to_gcs import S3ToGCSOperator
  from airflow.utils.timezone import utcnow
label_desc: Use image node_id 7 for calling the TestS3ToGoogleCloudStorageOperator obj's underlying member method code with example usage: obj.test_execute_apply_gcs_prefix(gcs_mock_hook, s3_one_mock_hook, s3_two_mock_hook, apply_gcs_prefix, s3_prefix, s3_object, gcs_destination, gcs_object) without return types