Fixed test from refs #23913 when running tests in reverse.

from django.template import TemplateSyntaxError

from django.test import ignore_warnings, SimpleTestCase

from django.test.utils import reset_warning_registry

from django.utils.deprecation import RemovedInDjango20Warning

from ..utils import setup, TestObj

    @setup({'if-tag-eq-deprecated': '{% if foo = bar %}yes{% else %}no{% endif %}'},

        test_once=True)

    def test_if_tag_eq_deprecated(self):

        reset_warning_registry()

        with warnings.catch_warnings(record=True) as warns:

            warnings.simplefilter('always')

            output = self.engine.render_to_string('if-tag-eq-deprecated')