code: def test_16bit_monochrome_has_correct_mode():
      with Image.open("Tests/images/16bit.cropped.j2k") as j2k:
          j2k.load()
          assert j2k.mode == "I;16"
  
      with Image.open("Tests/images/16bit.cropped.jp2") as jp2:
          jp2.load()
          assert jp2.mode == "I;16"
  
imports: import os
  import re
  from io import BytesIO
  import pytest
  from PIL import Image, ImageFile, Jpeg2KImagePlugin, UnidentifiedImageError, features
  from .helper import assert_image_equal, assert_image_similar, assert_image_similar_tofile, skip_unless_feature
label_desc: Use image node_id 24 for calling a global function with example usage: test_16bit_monochrome_has_correct_mode() without return types