013 add price multiplier

tests/services/test_aggregator.py

@@ -85,14 +85,19 @@ def _make_price(provider: str, price: str) -> DeliveryPrice:
 
 
 def test_get_all_prices_full_success_returns_sorted_and_updates_cache() -> None:
-    provider_a = StubProvider(name="a", response=_make_price("a", "300.00"), cache_ttl_seconds=111)
-    provider_b = StubProvider(name="b", response=_make_price("b", "100.00"), cache_ttl_seconds=222)
+    provider_a = StubProvider(name="a", response=_make_price("a", "300.49"), cache_ttl_seconds=111)
+    provider_b = StubProvider(name="b", response=_make_price("b", "100.40"), cache_ttl_seconds=222)
     cache = StubCache()
-    service = AggregatorService([provider_a, provider_b], cache=cache)
+    service = AggregatorService(
+        [provider_a, provider_b],
+        cache=cache,
+        provider_price_multiplier=Decimal("1.1"),
+    )
 
     result = asyncio.run(service.get_all_prices(_make_request()))
 
     assert [price.provider for price in result] == ["b", "a"]
+    assert [price.price for price in result] == [Decimal("110"), Decimal("331")]
     assert len(provider_a.calls) == 1
     assert len(provider_b.calls) == 1
     assert len(cache.get_calls) == 2
@@ -148,15 +153,19 @@ def test_get_all_prices_raises_invalid_request_for_provider_request_errors() ->
 
 
 def test_get_all_prices_cache_hit_skips_provider_call() -> None:
-    cached_payload = _make_price("cdek", "99.00").model_dump(mode="json")
+    cached_payload = _make_price("cdek", "100.40").model_dump(mode="json")
     cache = StubCache(forced_get_value=cached_payload)
     provider = StubProvider(name="cdek", response=_make_price("cdek", "150.00"))
-    service = AggregatorService([provider], cache=cache)
+    service = AggregatorService(
+        [provider],
+        cache=cache,
+        provider_price_multiplier=Decimal("1.1"),
+    )
 
     result = asyncio.run(service.get_all_prices(_make_request()))
 
     assert [price.provider for price in result] == ["cdek"]
-    assert result[0].price == Decimal("99.00")
+    assert result[0].price == Decimal("110")
     assert provider.calls == []
     assert len(cache.get_calls) == 1
     assert cache.set_calls == []
@@ -166,19 +175,23 @@ def test_get_all_prices_delegates_filtering_and_sorting_to_domain_logic() -> Non
     provider_a = StubProvider(name="a", response=_make_price("a", "300.00"))
     provider_b = StubProvider(name="b", response=_make_price("b", "100.00"))
     delegated_inputs: list[list[DeliveryPrice]] = []
+    delegated_multipliers: list[Decimal] = []
 
-    def fake_filter_and_sort(prices):
+    def fake_filter_and_sort(prices, *, price_multiplier):
         price_list = list(prices)
         delegated_inputs.append(price_list)
+        delegated_multipliers.append(price_multiplier)
         return [price_list[0]]
 
     service = AggregatorService(
         [provider_a, provider_b],
         cache=StubCache(),
+        provider_price_multiplier=Decimal("1.23"),
         filter_and_sort_prices_fn=fake_filter_and_sort,
     )
 
     result = asyncio.run(service.get_all_prices(_make_request()))
 
     assert [price.provider for price in delegated_inputs[0]] == ["a", "b"]
+    assert delegated_multipliers == [Decimal("1.23")]
     assert [price.provider for price in result] == ["a"]