code: def test_gbr_file():
      with Image.open("Tests/images/gbr.gbr") as im:
          assert_image_equal_tofile(im, "Tests/images/gbr.png")
  
imports: from __future__ import annotations
  import pytest
  from PIL import GbrImagePlugin, Image
  from .helper import assert_image_equal_tofile
label_desc: Use image node_id 1 for calling a global function with example usage: test_gbr_file() without return types