code: def test_sanity():
      with Image.open("Tests/images/hopper.qoi") as im:
          assert im.mode == "RGB"
          assert im.size == (128, 128)
          assert im.format == "QOI"
  
          assert_image_equal_tofile(im, "Tests/images/hopper.png")
  
      with Image.open("Tests/images/pil123rgba.qoi") as im:
          assert im.mode == "RGBA"
          assert im.size == (162, 150)
          assert im.format == "QOI"
  
          assert_image_equal_tofile(im, "Tests/images/pil123rgba.png")
  
imports: from __future__ import annotations
  import pytest
  from PIL import Image, QoiImagePlugin
  from .helper import assert_image_equal_tofile
label_desc: Use image node_id 1 for calling a global function with example usage: test_sanity() without return types