UPDATE

rag/tests/test_recommendation_services.py

@@ -68,6 +68,46 @@ class RecommendationServiceDefaultsTests(TestCase):
         mock_build_rag_context.assert_called_once()
         mock_build_plant_text.assert_called_once_with("گوجه‌فرنگی", "میوه‌دهی")
         mock_build_irrigation_method_text.assert_called_once_with("آبیاری قطره‌ای")
+        self.assertEqual(
+            result["selected_irrigation_method"]["name"],
+            "آبیاری قطره‌ای",
+        )
+
+    @patch("rag.services.irrigation.calculate_forecast_water_needs", return_value=[])
+    @patch("rag.services.irrigation.resolve_kc", return_value=0.9)
+    @patch("rag.services.irrigation.resolve_crop_profile", return_value={})
+    @patch("rag.services.irrigation.build_irrigation_method_text", return_value="method text")
+    @patch("rag.services.irrigation.build_plant_text", return_value="plant text")
+    @patch("rag.services.irrigation.build_rag_context", return_value="")
+    @patch("rag.services.irrigation.get_chat_client")
+    def test_irrigation_recommendation_persists_selected_method_on_farm(
+        self,
+        mock_get_chat_client,
+        _mock_build_rag_context,
+        _mock_build_plant_text,
+        mock_build_irrigation_method_text,
+        _mock_resolve_crop_profile,
+        _mock_resolve_kc,
+        _mock_calculate_forecast_water_needs,
+    ):
+        sprinkler = IrrigationMethod.objects.create(name="بارانی")
+        self.farm.irrigation_method = None
+        self.farm.save(update_fields=["irrigation_method", "updated_at"])
+
+        mock_response = Mock()
+        mock_response.choices = [Mock(message=Mock(content='{"plan": {"frequencyPerWeek": 4}}'))]
+        mock_get_chat_client.return_value.chat.completions.create.return_value = mock_response
+
+        result = get_irrigation_recommendation(
+            sensor_uuid=str(self.farm_uuid),
+            growth_stage="میوه‌دهی",
+            irrigation_method_name="بارانی",
+        )
+
+        self.farm.refresh_from_db()
+        self.assertEqual(self.farm.irrigation_method_id, sprinkler.id)
+        self.assertEqual(result["selected_irrigation_method"]["id"], sprinkler.id)
+        mock_build_irrigation_method_text.assert_called_once_with("بارانی")
 
     @patch("rag.services.fertilization.build_plant_text", return_value="plant text")
     @patch("rag.services.fertilization.build_rag_context", return_value="")