def test_notification_mark_unseen(self):
self.assertFalse(self.notification.seen)
ns = NotificationSet.get_unread(self.teacher)
self.assertEqual(ns.count, 1)
ns = NotificationSet.get_course(self.course_instance, self.teacher)
self.assertEqual(ns.count_and_mark_unseen(), 1)
self.assertTrue(self.notification in ns.notifications)
ns = NotificationSet.get_unread(self.teacher)
self.assertEqual(ns.count, 0)
ns = NotificationSet.get_course(self.course_instance, self.teacher)
self.assertEqual(ns.count, 1)
self.assertEqual(ns.count_and_mark_unseen(), 0)
