code: def test_header_errors():
      for path in (
          "Tests/images/invalid_header_length.jp2",
          "Tests/images/not_enough_data.jp2",
      ):
          with pytest.raises(UnidentifiedImageError):
              with Image.open(path):
                  pass
  
      with pytest.raises(OSError):
          with Image.open("Tests/images/expected_to_read.jp2"):
              pass
  
imports: from __future__ import annotations
  import os
  import re
  from io import BytesIO
  import pytest
  from PIL import Image, ImageFile, Jpeg2KImagePlugin, UnidentifiedImageError, _binary, features
  from .helper import assert_image_equal, assert_image_similar, assert_image_similar_tofile, skip_unless_feature, skip_unless_feature_version
label_desc: Use image node_id 20 for calling a global function with example usage: test_header_errors() without return types