test: add missing test for get_flags_by_ticket_batch

Author: saivats

tests/unit/test_api.py

@@ -526,6 +526,19 @@ def test_create_flag(self):
             assert result == response_data
             assert mock.last_request.json() == flag_data
 
+    def test_get_flags_by_ticket_batch(self):
+        api = openfoodfacts.API(user_agent=TEST_USER_AGENT)
+        ticket_ids = [1, 2, 3]
+        response_data = {"flags": []}
+        with requests_mock.mock() as mock:
+            mock.post(
+                "https://nutripatrol.openfoodfacts.org/api/v1/flags/batch",
+                text=json.dumps(response_data),
+            )
+            result = api.nutripatrol.get_flags_by_ticket_batch(ticket_ids)
+            assert result == response_data
+            assert mock.last_request.json() == {"ticket_ids": ticket_ids}
+
     def test_get_ticket(self):
         api = openfoodfacts.API(user_agent=TEST_USER_AGENT)
         ticket_id = 456