code: def test_sanity():
      # Arrange
  
      # Act
      with Image.open(TEST_FILE) as im:
          # Assert
          assert im.size == (128, 128)
          assert isinstance(im, DcxImagePlugin.DcxImageFile)
          orig = hopper()
          assert_image_equal(im, orig)
  
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 1 for calling a global function with example usage: test_sanity() without return types