code: def test_progressbar(capsys):
      with ProgressBar():
          out = get_threaded(dsk, "e")
      assert out == 6
      check_bar_completed(capsys)
      with ProgressBar(width=20):
          out = get_threaded(dsk, "e")
      check_bar_completed(capsys, 20)
  
file_path: dask/dask/diagnostics/tests/test_progress.py
imports: from __future__ import annotations
  from operator import add, mul
  import pytest
  from dask.callbacks import Callback
  from dask.diagnostics import ProgressBar
  from dask.diagnostics.progress import format_time
  from dask.local import get_sync
  from dask.threaded import get
label_desc: Use image node_id 3 for calling a global function with example usage: test_progressbar(capsys) without return types