code: def test_broken_csv(tmp_path):
      """Test broken .csv that does not use timestamps."""
      pytest.importorskip("pandas")
      content = (
          "onset,duration,description\n" "1.,1.0,AA\n" "3.,2.425,BB"
      )
      fname = tmp_path / "annotations_broken.csv"
      with open(fname, "w") as f:
          f.write(content)
      with pytest.warns(RuntimeWarning, match="save your CSV as a TXT"):
          read_annotations(fname)
  
imports: import sys
  from collections import OrderedDict
  from datetime import datetime, timedelta, timezone
  from itertools import repeat
  from pathlib import Path
  import numpy
  import pytest
  from numpy.testing import assert_allclose, assert_array_almost_equal, assert_array_equal, assert_equal
  from pytest import approx
  import mne
  from mne import Annotations, Epochs, annotations_from_events, count_annotations, create_info, events_from_annotations, read_annotations
  from mne.annotations import _handle_meas_date, _read_annotations_txt_parse_header, _sync_onset
  from mne.datasets import testing
  from mne.io import RawArray, concatenate_raws, read_raw_fif
  from mne.utils import _dt_to_stamp, _raw_annot, _record_warnings, _stamp_to_dt, assert_and_remove_boundary_annot, catch_logging, check_version
label_desc: Use image node_id 25 for calling a global function with example usage: test_broken_csv(tmp_path) without return types