code: def test_degenerate():
      """Test checking of some bad inputs."""
      for func in (
          read_raw_edf,
          read_raw_bdf,
          read_raw_gdf,
          partial(_read_header, exclude=(), infer_types=False),
      ):
          with pytest.raises(NotImplementedError, match="Only.*txt.*"):
              func(edf_txt_stim_channel_path)
  
imports: import datetime
  from contextlib import nullcontext
  from functools import partial
  from pathlib import Path
  import numpy
  import pytest
  from numpy.testing import assert_allclose, assert_array_almost_equal, assert_array_equal, assert_equal
  from scipy.io import loadmat
  from mne import Annotations, pick_types
  from mne._fiff.pick import channel_indices_by_type, get_channel_type_constants
  from mne.annotations import _ndarray_ch_names, events_from_annotations, read_annotations
  from mne.datasets import testing
  from mne.io import edf, read_raw_bdf, read_raw_edf, read_raw_fif, read_raw_gdf
  from mne.io.edf.edf import _edf_str, _parse_prefilter_string, _read_annotations_edf, _read_ch, _read_edf_header, _read_header
  from mne.io.tests.test_raw import _test_raw_reader
  from mne.tests.test_annotations import _assert_annotations_equal
label_desc: Use image node_id 31 for calling a global function with example usage: test_degenerate() without return types