Add the missing conf

opentech/apply/users/tests/test_utils.py

 from django.core import mail
-from django.test import TestCase
+from django.test import TestCase, override_settings
 
 from opentech.apply.users.tests.factories import UserFactory
 
 from ..utils import send_activation_email
 
 
+@override_settings(ROOT_URLCONF='opentech.apply.urls')
 class TestActivationEmail(TestCase):
     def test_activation_email_includes_link(self):
         send_activation_email(UserFactory())