code: def test_16bit():
      with Image.open("Tests/images/16bit.cropped.tif") as im:
          _test_float_conversion(im)
  
      for color in (65535, 65536):
          im = Image.new("I", (1, 1), color)
          im_i16 = im.convert("I;16")
          assert im_i16.getpixel((0, 0)) == 65535
  
imports: from __future__ import annotations
  import pytest
  from PIL import Image
  from .helper import assert_image, assert_image_equal, assert_image_similar, hopper
label_desc: Use image node_id 6 for calling a global function with example usage: test_16bit() without return types