update 1. GTP-6 Astra, оптимизация кода и фикс

tests/support.py

@@ -8,6 +8,7 @@ from sqlalchemy import create_engine
 from sqlalchemy.orm import Session, sessionmaker
 
 from hockey_data.models import Base
+from hockey_data.database import HockeyDatabase
 
 
 class LocalTestDatabase:
@@ -29,14 +30,6 @@ class LocalTestDatabase:
     def create_all(self) -> None:
         Base.metadata.create_all(self.engine)
 
-    @contextmanager
-    def session(self) -> Iterator[Session]:
-        session = self.SessionFactory()
-        try:
-            yield session
-            session.commit()
-        except Exception:
-            session.rollback()
-            raise
-        finally:
-            session.close()
+    # Exercise the same transaction nesting as production, with a local engine.
+    session = HockeyDatabase.session
+    atomic_session = HockeyDatabase.atomic_session