code: def test_prepare_output_config():
      config = _TransformJob._prepare_output_config(
          OUTPUT_PATH, None, None, None
      )
  
      assert config == {"S3OutputPath": OUTPUT_PATH}
  
imports: from __future__ import absolute_import
  import pytest
  from mock import MagicMock, Mock, patch, PropertyMock
  from sagemaker.session_settings import SessionSettings
  from sagemaker.transformer import _TransformJob, Transformer
  from sagemaker.workflow.pipeline_context import PipelineSession, _PipelineConfig
  from sagemaker.inputs import BatchDataCaptureConfig
  from sagemaker.workflow.pipeline_definition_config import PipelineDefinitionConfig
  from tests.integ import test_local_mode
  from tests.unit import SAGEMAKER_CONFIG_TRANSFORM_JOB
label_desc: Use image node_id 30 for calling a global function with example usage: test_prepare_output_config() without return types