code: def test_read_raw_supported(fname):
      """Test supported file types."""
      read_raw(fname)
      read_raw(fname, verbose=False)
      raw = read_raw(fname, preload=True)
      assert "data loaded" in str(raw)
  
file_path: mne-python/mne/io/tests/test_read_raw.py
imports: from pathlib import Path
  from shutil import copyfile
  import pytest
  from mne.datasets import testing
  from mne.io import read_raw
  from mne.io._read_raw import _get_readers, split_name_ext
label_desc: Use image node_id 4 for calling a global function with example usage: test_read_raw_supported(fname) without return types