feat: enhance database session management with commit and rollback; add user and deal API tests

tests/api/v1/conftest.py

@@ -3,15 +3,31 @@ from __future__ import annotations
 
 from collections.abc import AsyncGenerator
 
+import pytest
 import pytest_asyncio
 from httpx import ASGITransport, AsyncClient
 from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
 
 from app.api.deps import get_db_session
+from app.core.security import password_hasher
 from app.main import create_app
 from app.models import Base
 
 
+@pytest.fixture(autouse=True)
+def stub_password_hasher(monkeypatch: pytest.MonkeyPatch) -> None:
+    """Replace bcrypt-dependent hashing with deterministic helpers for tests."""
+
+    def fake_hash(password: str) -> str:
+        return f"hashed-{password}"
+
+    def fake_verify(password: str, hashed_password: str) -> bool:
+        return hashed_password == f"hashed-{password}"
+
+    monkeypatch.setattr(password_hasher, "hash", fake_hash)
+    monkeypatch.setattr(password_hasher, "verify", fake_verify)
+
+
 @pytest_asyncio.fixture()
 async def session_factory() -> AsyncGenerator[async_sessionmaker[AsyncSession], None]:
     engine = create_async_engine("sqlite+aiosqlite:///:memory:", future=True)
@@ -30,7 +46,12 @@ async def client(
 
     async def _get_session_override() -> AsyncGenerator[AsyncSession, None]:
         async with session_factory() as session:
-            yield session
+            try:
+                yield session
+                await session.commit()
+            except Exception:
+                await session.rollback()
+                raise
 
     app.dependency_overrides[get_db_session] = _get_session_override
     transport = ASGITransport(app=app)