code: def _assert_version_output(capsys: Capture):
      out, err = capsys.readouterr()
      err_expected = ""
      out_expected = f"{__version__}\n"
      assert err == err_expected
      assert out == out_expected
  
file_path: bokeh/tests/unit/bokeh/command/test_bootstrap.py
imports: from __future__ import annotations
  import pytest
  from bokeh import __version__
  from tests.support.util.types import Capture
  from bokeh.command.bootstrap import main
label_desc: Use image node_id 1 for calling a global function with example usage: _assert_version_output(capsys) without return types