eat(yandexweather): add yandexweather api

tests/common/mock.py

@@ -1,6 +1,8 @@
 from pathlib import Path
+from typing import TypeVar
 
-from gallery.sketch.source import ApiSource
+from gallery.sketch.api import Api, S
+from gallery.sketch.source import DEFAULT_REQUEST_MODE, ApiSource, RequestMode
 
 
 class MockSource(ApiSource):
@@ -10,8 +12,19 @@ class MockSource(ApiSource):
         self._path = path
         self._mapping = mapping
 
-    async def request(self, endpoint: str) -> str:
+    async def request(self, endpoint: str, /, mode: RequestMode = DEFAULT_REQUEST_MODE) -> str:
         for pattern, filename in self._mapping.items():
             if pattern in endpoint:
                 return (self._path / filename).read_text()
         raise ValueError(endpoint)
+
+
+API = Api[S]
+A = TypeVar("A", bound=API)
+
+
+def create_mock_api(api_type: type[A], mock_source: MockSource) -> A:
+    api = api_type()
+    # pylint: disable=protected-access
+    api._build_source = lambda: mock_source
+    return api