code: def test_execute(
      self, mock_remove, mock_bulk_load_custom, mock_download_file
  ):
      S3ToMySqlOperator(**self.s3_to_mysql_transfer_kwargs).execute({})
  
      mock_download_file.assert_called_once_with(
          key=self.s3_to_mysql_transfer_kwargs["s3_source_key"]
      )
      mock_bulk_load_custom.assert_called_once_with(
          table=self.s3_to_mysql_transfer_kwargs["mysql_table"],
          tmp_file=mock_download_file.return_value,
          duplicate_key_handling=self.s3_to_mysql_transfer_kwargs[
              "mysql_duplicate_key_handling"
          ],
          extra_options=self.s3_to_mysql_transfer_kwargs[
              "mysql_extra_options"
          ],
      )
      mock_remove.assert_called_once_with(
          mock_download_file.return_value
      )
  
file_path: airflow/tests/providers/mysql/transfers/test_s3_to_mysql.py
imports: from __future__ import annotations
  from unittest.mock import patch
  import pytest
  from sqlalchemy import or_
  from airflow import models
  from airflow.providers.mysql.transfers.s3_to_mysql import S3ToMySqlOperator
  from airflow.utils import db
  from airflow.utils.session import create_session
label_desc: Use image node_id 2 for calling the TestS3ToMySqlTransfer obj's underlying member method code with example usage: obj.test_execute(mock_remove, mock_bulk_load_custom, mock_download_file) without return types