013 add price multiplier

This commit is contained in:
Раис Юсупалиев
2026-03-09 16:14:49 +03:00
parent da301d4bc4
commit 2bd884c8d5
20 changed files with 312 additions and 25 deletions
+2
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@@ -1,5 +1,6 @@
"""Application configuration split by architecture component."""
from decimal import Decimal
from functools import lru_cache
from pathlib import Path
import sys
@@ -29,6 +30,7 @@ class ServiceConfig(BaseModel):
class BusinessLogicConfig(BaseModel):
weight_round_scale: int = 2
provider_price_multiplier: Decimal = Field(..., gt=0)
class RepositoryConfig(BaseModel):
+1
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@@ -35,6 +35,7 @@ def _build_aggregator_service(settings: Settings) -> AggregatorService:
providers=providers,
cache=cache,
weight_round_scale=settings.business_logic.weight_round_scale,
provider_price_multiplier=settings.business_logic.provider_price_multiplier,
)
return service
+53 -6
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@@ -6,10 +6,12 @@ from decimal import ROUND_HALF_UP, Decimal
from typing import Protocol
DEFAULT_WEIGHT_ROUND_SCALE = 2
DEFAULT_PROVIDER_PRICE_MULTIPLIER = Decimal("1")
MAX_ROUND_SCALE = 6
DIMENSIONS_ROUND_SCALE = 1
MIN_WEIGHT_KG = Decimal("0.01")
MIN_DIMENSION_CM = Decimal("0.1")
INTEGER_PRICE_QUANTIZER = Decimal("1")
_MISSING = object()
@@ -77,12 +79,20 @@ def normalize_delivery_request(
)
def filter_valid_prices(prices: Iterable[object]) -> list[ProviderPrice]:
def filter_valid_prices(
prices: Iterable[object],
*,
price_multiplier: Decimal = DEFAULT_PROVIDER_PRICE_MULTIPLIER,
) -> list[ProviderPrice]:
"""Normalize price records and keep only domain-valid entries."""
normalized_multiplier = _normalize_price_multiplier(price_multiplier)
valid_prices: list[ProviderPrice] = []
for price_entry in prices:
normalized_price = _normalize_price(price_entry)
normalized_price = _normalize_price(
price_entry,
price_multiplier=normalized_multiplier,
)
if normalized_price is not None:
valid_prices.append(normalized_price)
return valid_prices
@@ -94,13 +104,23 @@ def sort_prices_by_price(prices: Iterable[ProviderPrice]) -> list[ProviderPrice]
return sorted(prices, key=lambda price_entry: price_entry.price)
def filter_and_sort_prices(prices: Iterable[object]) -> list[ProviderPrice]:
def filter_and_sort_prices(
prices: Iterable[object],
*,
price_multiplier: Decimal = DEFAULT_PROVIDER_PRICE_MULTIPLIER,
) -> list[ProviderPrice]:
"""Apply domain filtering and return prices ordered by value."""
return sort_prices_by_price(filter_valid_prices(prices))
return sort_prices_by_price(
filter_valid_prices(prices, price_multiplier=price_multiplier)
)
def _normalize_price(candidate: object) -> ProviderPrice | None:
def _normalize_price(
candidate: object,
*,
price_multiplier: Decimal,
) -> ProviderPrice | None:
provider = _normalize_text(_get_optional_attr(candidate, "provider"))
service_name = _normalize_text(_get_optional_attr(candidate, "service_name"))
currency = _normalize_text(_get_optional_attr(candidate, "currency")).upper()
@@ -117,6 +137,12 @@ def _normalize_price(candidate: object) -> ProviderPrice | None:
price = _try_to_decimal(price_raw)
if price is None or not price.is_finite() or price <= 0:
return None
adjusted_price = _apply_price_multiplier_and_round(
price,
price_multiplier=price_multiplier,
)
if adjusted_price is None:
return None
min_days = _try_to_int(min_days_raw)
max_days = _try_to_int(max_days_raw)
@@ -129,7 +155,7 @@ def _normalize_price(candidate: object) -> ProviderPrice | None:
return ProviderPrice(
provider=provider,
service_name=service_name,
price=price,
price=adjusted_price,
currency=currency,
delivery_days_min=min_days,
delivery_days_max=max_days,
@@ -192,6 +218,27 @@ def _round_half_up(value: Decimal, scale: int) -> Decimal:
return value.quantize(quantizer, rounding=ROUND_HALF_UP)
def _normalize_price_multiplier(value: Decimal) -> Decimal:
multiplier = _try_to_decimal(value)
if multiplier is None or not multiplier.is_finite() or multiplier <= 0:
raise ValueError(f"Price multiplier must be a positive finite Decimal: {value!r}")
return multiplier
def _apply_price_multiplier_and_round(
price: Decimal,
*,
price_multiplier: Decimal,
) -> Decimal | None:
adjusted_price = (price * price_multiplier).quantize(
INTEGER_PRICE_QUANTIZER,
rounding=ROUND_HALF_UP,
)
if not adjusted_price.is_finite() or adjusted_price <= 0:
return None
return adjusted_price
def _to_decimal(value: object) -> Decimal:
converted = _try_to_decimal(value)
if converted is None:
+19 -5
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@@ -3,11 +3,13 @@
import asyncio
import hashlib
import json
from collections.abc import Callable, Iterable, Sequence
from collections.abc import Iterable, Sequence
from decimal import Decimal
from typing import Protocol
from app.adapters.delivery_providers.base import DeliveryProvider, ProviderRequestError
from app.domain.price import (
DEFAULT_PROVIDER_PRICE_MULTIPLIER,
DEFAULT_WEIGHT_ROUND_SCALE,
NormalizedDeliveryRequest,
filter_and_sort_prices,
@@ -31,6 +33,15 @@ class PriceCacheProtocol(Protocol):
async def set(self, key: str, value: object, ttl: int | None = None) -> None: ...
class FilterAndSortPricesFn(Protocol):
def __call__(
self,
prices: Iterable[object],
*,
price_multiplier: Decimal = DEFAULT_PROVIDER_PRICE_MULTIPLIER,
) -> list[object]: ...
class AggregatorService:
def __init__(
self,
@@ -38,13 +49,13 @@ class AggregatorService:
cache: PriceCacheProtocol | None = None,
*,
weight_round_scale: int = DEFAULT_WEIGHT_ROUND_SCALE,
filter_and_sort_prices_fn: Callable[[Iterable[object]], list[object]] = (
filter_and_sort_prices
),
provider_price_multiplier: Decimal = DEFAULT_PROVIDER_PRICE_MULTIPLIER,
filter_and_sort_prices_fn: FilterAndSortPricesFn = filter_and_sort_prices,
) -> None:
self._providers = tuple(providers)
self._cache = cache
self._weight_round_scale = weight_round_scale
self._provider_price_multiplier = provider_price_multiplier
self._filter_and_sort_prices = filter_and_sort_prices_fn
async def get_all_prices(self, request: DeliveryRequest) -> list[DeliveryPrice]:
@@ -86,7 +97,10 @@ class AggregatorService:
raise InvalidDeliveryRequestError(
"Delivery request is invalid for configured providers."
)
filtered_and_sorted = self._filter_and_sort_prices(successful_results)
filtered_and_sorted = self._filter_and_sort_prices(
successful_results,
price_multiplier=self._provider_price_multiplier,
)
return [self._coerce_delivery_price(price) for price in filtered_and_sorted]
async def _get_provider_price(
+1
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@@ -8,6 +8,7 @@ service:
business_logic:
weight_round_scale: 2
provider_price_multiplier: 1.0
repository:
redis_dsn: "redis://localhost:6379/0"
+1
View File
@@ -8,6 +8,7 @@ service:
business_logic:
weight_round_scale: 2
provider_price_multiplier: 1.0
repository:
redis_dsn: "redis://localhost:6379/0"
+4 -3
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@@ -1,7 +1,7 @@
# Spec Tasks Index
> ⚠️ This file is generated. Do not edit manually.
> Generated at (UTC): `2026-03-08T19:58:23+00:00`
> Generated at (UTC): `2026-03-09T13:13:56+00:00`
## Tasks
@@ -20,9 +20,10 @@
| 010 | DONE | 2026-03-08 | Migrate to YAML-only configuration loading | `spec/tasks/010_migrate_to_yaml_only_configuration.md` |
| 011 | DONE | 2026-03-08 | Migrate Redis repository client to aioredis | `spec/tasks/011_migrate_redis_repository_to_aioredis.md` |
| 012 | DONE | 2026-03-08 | Remove observability and SigNoz stack for phase 1 | `spec/tasks/012_remove_observability_and_signoz_for_phase1.md` |
| 013 | DONE | 2026-03-09 | Add configurable provider price multiplier in domain logic | `spec/tasks/013_add_configurable_provider_price_multiplier.md` |
## Summary
- Total: **13**
- Total: **14**
- TODO: **0**
- DONE: **13**
- DONE: **14**
+3
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@@ -20,6 +20,7 @@
- Возвращать унифицированный список тарифов, отсортированных по цене
- Если провайдер вернул ошибку или не ответил вовремя — исключить его из результата, не падая целиком
- Кешировать ответы провайдеров для исключения повторных внешних запросов. Время кэширования вынести в конфиг
- Применять к цене, полученной от провайдера, конфигурируемый мультипликатор и округлять итоговую цену до целого значения
---
@@ -54,6 +55,8 @@
### Business Logic (`app/domain/`)
- Правила сортировки и фильтрации тарифов
- Логика сравнения цен
- Правила применения конфигурируемого мультипликатора к ценам провайдеров
- Округление цены после применения мультипликатора до целого значения по детерминированному правилу
- Нормализация входных данных (например, правила округления веса)
- Чистые функции, без IO, без зависимостей от фреймворков
@@ -0,0 +1,47 @@
---
id: 013
title: Add configurable provider price multiplier in domain logic
status: DONE
created: 2026-03-09
---
## Context
Сейчас `app/domain/price.py` валидирует и сортирует тарифы провайдеров без дополнительной постобработки цены. Появилось новое требование: перед возвратом результата применять к цене провайдера конфигурируемый multiplier из YAML-конфига и округлять итог до целого числа.
## Goal
Добавить в Business Logic детерминированное правило пересчёта `DeliveryPrice.price` через multiplier из секции `business_logic` и провести это значение через конфигурацию и service orchestration без переноса формулы в Service или Adapter.
## Constraints
- Соблюдать layered architecture из `AGENTS.md`.
- Формула умножения и округления должна жить только в `app/domain/`; Service может только передавать нужный параметр и делегировать вызов.
- Значение multiplier должно читаться из YAML-конфига через секцию `business_logic`.
- После применения multiplier цена должна оставаться `Decimal`, но иметь целочисленное значение.
- Правило округления должно быть явным и детерминированным: до `Decimal("1")` c `ROUND_HALF_UP`.
- Не изменять provider adapters, внешние HTTP-контракты и формат ответа кроме нового значения `price`.
- Не изменять файлы в `spec/`.
## Acceptance criteria
- В `business_logic` configuration section добавлено обязательное поле для multiplier цены провайдера с валидацией положительного значения.
- Domain functions применяют multiplier к каждой валидной цене провайдера до сортировки результата.
- Итоговая цена после умножения округляется до целого значения по правилу `ROUND_HALF_UP`.
- Service не содержит формулу расчёта и по-прежнему делегирует обработку цен в domain logic.
- Поведение одинаково для свежих ответов провайдера и для cache hit: в обоих случаях наружу возвращается уже пересчитанная цена.
## Definition of Done
- [ ] Обновлена конфигурация `business_logic` и YAML fixtures/example configs для multiplier.
- [ ] Реализована pure domain logic для пересчёта и округления цены.
- [ ] Service wiring передаёт multiplier в domain logic без добавления business rules в Service.
- [ ] Unit/service/config tests покрывают стандартные и edge-case сценарии.
## Tests
- Обновить `tests/domain/test_price.py` для проверки multiplier, округления `ROUND_HALF_UP`, пустого input и невалидных цен.
- Обновить `tests/services/test_aggregator.py` для проверки делегирования multiplier и одинакового поведения fresh/cache hit.
- Обновить `tests/config/test_config_sections.py` для проверки чтения multiplier из YAML и валидации невалидных значений.
- При необходимости обновить `tests/smoke/test_app_import.py` под обязательное новое поле конфигурации.
## Commands
- `poetry run pytest tests/domain/test_price.py -q`
- `poetry run pytest tests/services/test_aggregator.py -q`
- `poetry run pytest tests/config/test_config_sections.py -q`
- `poetry run pytest tests/smoke/test_app_import.py -q`
- `python3 spec/gen_spec_index.py --check`
@@ -10,6 +10,7 @@ from app.adapters.delivery_providers.cdek.client import (
CDEKProvider,
CDEKRequestError,
)
from app import config as config_module
from app.config import AdapterConfig, Settings
from app.schemas.request import DeliveryEntity, DeliveryRequest
@@ -299,6 +300,22 @@ def test_provider_uses_adapter_yaml_config_for_timeout_and_cache_ttl(
config_file = tmp_path / "config.yaml"
config_file.write_text(
"""
controller:
api_prefix: "/api/v1"
request_id_header: "X-Request-ID"
service:
provider_timeout_seconds: 10.0
max_parallel_providers: 8
business_logic:
weight_round_scale: 2
provider_price_multiplier: 1.0
repository:
redis_dsn: "redis://localhost:6379/0"
price_cache_ttl_seconds: 900
adapter:
cdek_base_url: "https://api.cdek.test/v2"
cdek_client_id: "yaml-id"
@@ -310,7 +327,7 @@ adapter:
""".strip(),
encoding="utf-8",
)
monkeypatch.setenv("G2S_CONFIG_FILE", str(config_file))
monkeypatch.setattr(config_module, "_resolve_runtime_config_file", lambda: str(config_file))
settings = Settings()
http_client = RecordingHTTPClient()
provider = CDEKProvider.from_adapter_config(
@@ -6,6 +6,7 @@ service:
business_logic:
weight_round_scale: 2
provider_price_multiplier: 1.0
repository:
redis_dsn: "redis://localhost:6379/0"
@@ -0,0 +1,24 @@
controller:
api_prefix: "/api/v1"
request_id_header: "X-Request-ID"
service:
provider_timeout_seconds: 10.0
max_parallel_providers: 8
business_logic:
weight_round_scale: 2
provider_price_multiplier: 0
repository:
redis_dsn: "redis://localhost:6379/0"
price_cache_ttl_seconds: 900
adapter:
cdek_base_url: "https://api.cdek.ru/v2"
cdek_client_id: "test-client-id"
cdek_client_secret: "test-client-secret"
cdek_retry_attempts: 2
cdek_retry_backoff_seconds: 0.2
cdek_timeout_seconds: 10.0
cdek_cache_ttl_seconds: 900
@@ -6,6 +6,7 @@ service:
business_logic:
weight_round_scale: 2
provider_price_multiplier: 1.0
repository:
redis_dsn: "redis://localhost:6379/0"
@@ -0,0 +1,23 @@
controller:
api_prefix: "/api/v1"
request_id_header: "X-Request-ID"
service:
provider_timeout_seconds: 10.0
max_parallel_providers: 8
business_logic:
weight_round_scale: 2
repository:
redis_dsn: "redis://localhost:6379/0"
price_cache_ttl_seconds: 900
adapter:
cdek_base_url: "https://api.cdek.ru/v2"
cdek_client_id: "test-client-id"
cdek_client_secret: "test-client-secret"
cdek_retry_attempts: 2
cdek_retry_backoff_seconds: 0.2
cdek_timeout_seconds: 10.0
cdek_cache_ttl_seconds: 900
@@ -6,6 +6,7 @@ service:
business_logic:
weight_round_scale: 2
provider_price_multiplier: 1.25
repository:
redis_dsn: "redis://localhost:6379/0"
+42
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@@ -1,3 +1,4 @@
from decimal import Decimal
from pathlib import Path
import pytest
@@ -17,6 +18,12 @@ DEFAULT_CONFIG_FILE_FIXTURE = (
TEST_OVERRIDE_CONFIG_FILE_FIXTURE = (
PROJECT_ROOT / "tests" / "config" / "fixtures" / "config.test.override.yaml"
)
INVALID_PRICE_MULTIPLIER_CONFIG_FILE = (
PROJECT_ROOT / "tests" / "config" / "fixtures" / "config.invalid_price_multiplier.yaml"
)
MISSING_PRICE_MULTIPLIER_CONFIG_FILE = (
PROJECT_ROOT / "tests" / "config" / "fixtures" / "config.missing_price_multiplier.yaml"
)
def _use_runtime_config_files(
@@ -47,6 +54,7 @@ def test_configuration_sections_are_loaded_from_yaml_file(
assert settings.service.provider_timeout_seconds == 10.0
assert settings.service.max_parallel_providers == 8
assert settings.business_logic.weight_round_scale == 2
assert settings.business_logic.provider_price_multiplier == Decimal("1.0")
assert settings.repository.redis_dsn == "redis://localhost:6379/0"
assert settings.repository.price_cache_ttl_seconds == 900
assert settings.adapter.cdek_base_url == "https://api.cdek.ru/v2"
@@ -82,6 +90,7 @@ def test_get_settings_returns_cached_instance(monkeypatch: pytest.MonkeyPatch) -
assert first is second
assert first.service.provider_timeout_seconds == 10.0
assert first.business_logic.provider_price_multiplier == Decimal("1.0")
get_settings.cache_clear()
@@ -98,5 +107,38 @@ def test_get_settings_uses_config_test_yaml_in_pytest_environment(
assert settings.service.provider_timeout_seconds == 17.0
assert settings.controller.api_prefix == "/from-config-test-yaml"
assert settings.business_logic.provider_price_multiplier == Decimal("1.25")
assert settings.adapter.cdek_client_id == "test-id"
get_settings.cache_clear()
def test_get_settings_fails_when_provider_price_multiplier_is_invalid(
monkeypatch: pytest.MonkeyPatch,
) -> None:
_use_runtime_config_files(
monkeypatch,
test_config_file=INVALID_PRICE_MULTIPLIER_CONFIG_FILE,
)
with pytest.raises(ValidationError) as error:
get_settings()
locations = {tuple(item["loc"]) for item in error.value.errors()}
assert ("business_logic", "provider_price_multiplier") in locations
get_settings.cache_clear()
def test_get_settings_fails_when_provider_price_multiplier_is_missing(
monkeypatch: pytest.MonkeyPatch,
) -> None:
_use_runtime_config_files(
monkeypatch,
test_config_file=MISSING_PRICE_MULTIPLIER_CONFIG_FILE,
)
with pytest.raises(ValidationError) as error:
get_settings()
locations = {tuple(item["loc"]) for item in error.value.errors()}
assert ("business_logic", "provider_price_multiplier") in locations
get_settings.cache_clear()
+2 -2
View File
@@ -69,7 +69,7 @@ def test_post_delivery_price_uses_registered_provider_in_default_dependency(
return DeliveryPrice(
provider=self.name,
service_name="stub-service",
price=Decimal("123.45"),
price=Decimal("123.50"),
currency="RUB",
delivery_days_min=2,
delivery_days_max=3,
@@ -136,7 +136,7 @@ def test_post_delivery_price_uses_registered_provider_in_default_dependency(
{
"provider": "stub-provider",
"service_name": "stub-service",
"price": "123.45",
"price": "124",
"currency": "RUB",
"delivery_days_min": 2,
"delivery_days_max": 3,
+28 -1
View File
@@ -80,6 +80,18 @@ def test_filter_valid_prices_handles_empty_input() -> None:
assert filter_and_sort_prices([]) == []
def test_filter_valid_prices_applies_multiplier_and_rounds_half_up() -> None:
low = _make_price(provider="cdek", price=Decimal("100.40"))
high = _make_price(provider="boxberry", price=Decimal("100.50"))
result = filter_valid_prices(
[low, high],
price_multiplier=Decimal("1.1"),
)
assert [price.price for price in result] == [Decimal("110"), Decimal("111")]
def test_filter_valid_prices_excludes_invalid_records() -> None:
valid = _make_price(provider=" cdek ", service_name=" express ", currency="rub")
invalid_provider = _make_price(provider=" ")
@@ -128,6 +140,17 @@ def test_filter_valid_prices_excludes_none_provider_and_service() -> None:
assert result[0].service_name == "express"
def test_filter_valid_prices_excludes_prices_rounded_to_zero_after_multiplier() -> None:
low_price = _make_price(provider="cdek", price=Decimal("0.40"))
result = filter_valid_prices(
[low_price],
price_multiplier=Decimal("0.5"),
)
assert result == []
def test_sort_prices_by_price_keeps_equal_price_order_stable() -> None:
price_a = _make_price(provider="a", price=Decimal("150.00"))
price_b = _make_price(provider="b", price=Decimal("150.00"))
@@ -143,6 +166,10 @@ def test_filter_and_sort_prices_combines_domain_steps() -> None:
price_b = _make_price(provider="b", price=Decimal("100.00"))
invalid = _make_price(provider="", price=Decimal("50.00"))
result = filter_and_sort_prices([price_a, invalid, price_b])
result = filter_and_sort_prices(
[price_a, invalid, price_b],
price_multiplier=Decimal("1.3"),
)
assert [price.provider for price in result] == ["b", "a"]
assert [price.price for price in result] == [Decimal("130"), Decimal("286")]
+21
View File
@@ -154,9 +154,30 @@ def test_repository_yaml_config_sets_redis_connection_and_ttl(
config_file = tmp_path / "config.yaml"
config_file.write_text(
"""
controller:
api_prefix: "/api/v1"
request_id_header: "X-Request-ID"
service:
provider_timeout_seconds: 10.0
max_parallel_providers: 8
business_logic:
weight_round_scale: 2
provider_price_multiplier: 1.0
repository:
redis_dsn: "redis://redis.internal:6380/5"
price_cache_ttl_seconds: 123
adapter:
cdek_base_url: "https://api.cdek.ru/v2"
cdek_client_id: "test-client-id"
cdek_client_secret: "test-client-secret"
cdek_retry_attempts: 2
cdek_retry_backoff_seconds: 0.2
cdek_timeout_seconds: 10.0
cdek_cache_ttl_seconds: 900
""".strip(),
encoding="utf-8",
)
+20 -7
View File
@@ -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"]