code: def test_read_png(test_images):
      img_expected = iio.imread(
          test_images / "chelsea.png", plugin="pillow"
      )
      img_actual = iio.imread(
          test_images / "chelsea.png", plugin="pyav"
      )
  
      assert np.allclose(img_actual, img_expected)
  
imports: import io
  import warnings
  from contextlib import ExitStack
  from pathlib import Path
  import numpy
  import pytest
  from conftest import IS_PYPY
  import imageio.v3
  from av.video.format import names
  from imageio.plugins.pyav import _format_to_dtype
label_desc: Use image node_id 10 for calling a global function with example usage: test_read_png(test_images) without return types