def METHOD_NAME(self):
    """Test PIL deinterlace function.
    Check if the `PILBackend.deinterlace()` function returns images
    that are non-progressive
    """
    path = PILBackend().deinterlace(self.IMG_225x225)
    from PIL import Image
    with Image.open(path) as img:
        self.assertFalse('progression' in img.info)