code: def test_16bit_monochrome_has_correct_mode(ext):
      with Image.open("Tests/images/16bit.cropped" + ext) as im:
          im.load()
          assert im.mode == "I;16"
  
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 27 for calling a global function with example usage: test_16bit_monochrome_has_correct_mode(ext) without return types