code: def test_old_data():
      """Test reading raw cnt files."""
      with pytest.warns(RuntimeWarning, match="number of bytes"):
          raw = _test_raw_reader(
              read_raw_cnt,
              input_fname=fname,
              eog="auto",
              misc=["NA1", "LEFT_EAR"],
          )
  
      # make sure we use annotations event if we synthesized stim
      assert len(raw.annotations) == 6
  
      eog_chs = pick_types(raw.info, eog=True, exclude=[])
      assert len(eog_chs) == 2  # test eog='auto'
      assert raw.info["bads"] == ["LEFT_EAR", "VEOGR"]  # test bads
  
      # the data has "05/10/200 17:35:31" so it is set to None
      assert raw.info["meas_date"] is None
  
file_path: mne-python/mne/io/cnt/tests/test_cnt.py
imports: import numpy
  import pytest
  from numpy.testing import assert_array_equal
  from mne import pick_types
  from mne.annotations import read_annotations
  from mne.datasets import testing
  from mne.io.cnt import read_raw_cnt
  from mne.io.tests.test_raw import _test_raw_reader
label_desc: Use image node_id 1 for calling a global function with example usage: test_old_data() without return types