test_admin_notifications: fix index test dependency The index test only worked because another test had prepared some database state it relied on. More specifically, the index test creates a notification as a newly created user, but that user had not been committed to the database yet. When running the index test standalone, this causes the error: IntegrityError: (IntegrityError) NOT NULL constraint failed: notifications.created_by u'INSERT INTO notifications (subject, body, created_by, created_on, type) VALUES (?, ?, ?, ?, ?)' (u'test_notification_1', u'notification_1', None, '2016-03-11 21:15:19.066402', u'message') By committing the database after the user is created, the problem is solved.