Добавлена валидация цены

tests/services/test_aggregator.py

@@ -218,12 +218,12 @@ def test_get_all_prices_cache_hit_skips_provider_call() -> None:
             StubCache(
                 forced_get_value=[
                     _make_price(
-                        "cdek",
+                        "other",
                         "100.40",
                         service_name="DOCUMENT EXPRESS",
                     ).model_dump(mode="json"),
                     _make_price(
-                        "cdek",
+                        "other",
                         "200.40",
                         service_name="Economy parcel",
                     ).model_dump(mode="json"),
@@ -238,10 +238,10 @@ def test_get_all_prices_applies_same_parcel_type_filter_for_fresh_and_cached_res
     expected_provider_calls: int,
 ) -> None:
     provider = StubProvider(
-        name="cdek",
+        name="other",
         response=[
-            _make_price("cdek", "100.40", service_name="DOCUMENT EXPRESS"),
-            _make_price("cdek", "200.40", service_name="Economy parcel"),
+            _make_price("other", "100.40", service_name="DOCUMENT EXPRESS"),
+            _make_price("other", "200.40", service_name="Economy parcel"),
         ],
     )
     service = AggregatorService(