code: def test_unclosed_file():
      def open():
          im = Image.open(TEST_FILE)
          im.load()
  
      pytest.warns(ResourceWarning, open)
  
file_path: pillow-simd/Tests/test_file_dcx.py
imports: import pytest
  from PIL import DcxImagePlugin, Image
  from .helper import assert_image_equal, hopper, is_pypy
label_desc: Use image node_id 2 for calling a global function with example usage: test_unclosed_file() without return types