Добавлена валидация цены

tests/adapters/delivery_providers/cdek/test_mapper.py

@@ -10,6 +10,7 @@ def test_map_cdek_response_maps_all_tariffs_to_unified_model() -> None:
         "currency": "usd",
         "tariff_codes": [
             {
+                "tariff_code": 7,
                 "tariff_name": "Express",
                 "delivery_sum": "1234.50",
                 "currency": "rub",
@@ -33,6 +34,25 @@ def test_map_cdek_response_maps_all_tariffs_to_unified_model() -> None:
     assert [price.currency for price in result] == ["RUB", "USD"]
     assert [price.delivery_days_min for price in result] == [2, 5]
     assert [price.delivery_days_max for price in result] == [4, 7]
+    assert [price.tariff_code for price in result] == [7, 136]
+
+
+def test_map_cdek_response_returns_none_tariff_code_when_missing() -> None:
+    payload = {
+        "tariff_codes": [
+            {
+                "tariff_name": "Express",
+                "delivery_sum": "100.00",
+                "currency": "RUB",
+                "period_min": 1,
+                "period_max": 2,
+            }
+        ]
+    }
+
+    result = map_cdek_response(payload)
+
+    assert result[0].tariff_code is None
 
 
 def test_map_cdek_response_raises_for_missing_tariff_codes() -> None: