Use robust test for add_screening_status

Do not depend on sorting IDs for checks

hypha/apply/api/v1/screening/tests/test_views.py

@@ -129,13 +129,15 @@ class SubmissionScreeningStatusViewSetTests(APITestCase):
             data={'id': self.yes_screening_status.id}
         )
         self.assertEqual(response.status_code, status.HTTP_201_CREATED)
-        self.assertEqual(len(response.json()), self.submission.screening_statuses.count())
-        first_submission_screening_status = self.submission.screening_statuses.order_by('-id').last()
+        self.assertEqual(len(response.json()), 2)
+
+        first_submission_screening_status = self.yes_default_screening_status
         self.assertEqual(response.json()[0]['id'], first_submission_screening_status.id)
         self.assertEqual(response.json()[0]['title'], first_submission_screening_status.title)
         self.assertEqual(response.json()[0]['yes'], first_submission_screening_status.yes)
         self.assertEqual(response.json()[0]['default'], first_submission_screening_status.default)
-        self.assertEqual(response.json()[1]['id'], self.submission.screening_statuses.order_by('id').last().id)
+
+        self.assertEqual(response.json()[1]['id'], self.yes_screening_status.id)
 
     def test_staff_can_list_submission_screening_statuses(self):
         user = StaffFactory()