code: def test_iobase_compatibility(self):
      log = StreamLogWriter(None, 1)
  
      assert not log.closed
      # has no specific effect
      log.close()
  
imports: from __future__ import annotations
  import logging
  import sys
  import warnings
  from unittest import mock
  import pytest
  from airflow.utils.log.logging_mixin import LoggingMixin, SetContextPropagate, StreamLogWriter, set_context
label_desc: Use image node_id 5 for calling the TestStreamLogWriter obj's underlying member method code with example usage: obj.test_iobase_compatibility() without return types