@raises(TemplateSyntaxError)
def test_html_attrs_assignment():
    ttag = r"""{% thumbnail '100x100' img -- alt="Hello" as th %}"""
    render_tag(ttag)
You can either use thumbnail as an assigment tag or specify html attrs,
dataset/ETHPy150Open matthewwithanm/django-imagekit/tests/test_thumbnail_tag.py/test_html_attrs_assignment