def tag(self):
        t = Template("{% load urls %}{% protocol %}")
        return t.render(Context({}))
Test whether a price with an expiration date is used in preference to a non-expiring price.
dataset/ETHPy150Open mozilla/moztrap/tests/view/templatetags/test_urls.py/ProtocolTest.tag--crossover with--dataset/ETHPy150Open dokterbob/satchmo/satchmo/apps/product/tests.py/ProductTest.test_expiring_price