feat: backend core — models, auth, CRUD, tests

backend/tests/conftest.py

@@ -0,0 +1,77 @@
+"""
+Pytest fixtures for integration tests.
+
+Uses SQLite in-memory (aiosqlite) for speed.
+Each test function gets a fresh database and HTTP client.
+"""
+
+import pytest
+import pytest_asyncio
+from httpx import ASGITransport, AsyncClient
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
+
+from app.database import Base, get_session
+from app.main import app
+
+TEST_DATABASE_URL = "sqlite+aiosqlite:///:memory:"
+
+
+@pytest_asyncio.fixture
+async def test_engine():
+    engine = create_async_engine(TEST_DATABASE_URL, echo=False)
+    async with engine.begin() as conn:
+        await conn.run_sync(Base.metadata.create_all)
+    yield engine
+    async with engine.begin() as conn:
+        await conn.run_sync(Base.metadata.drop_all)
+    await engine.dispose()
+
+
+@pytest_asyncio.fixture
+async def db_session(test_engine):
+    """Direct database session for use in fixtures and assertions."""
+    session_factory = async_sessionmaker(test_engine, expire_on_commit=False)
+    async with session_factory() as session:
+        yield session
+
+
+@pytest_asyncio.fixture
+async def client(test_engine) -> AsyncClient:
+    """HTTP client wired to a fresh in-memory database."""
+    session_factory = async_sessionmaker(test_engine, expire_on_commit=False)
+
+    async def override_get_session():
+        async with session_factory() as session:
+            yield session
+
+    app.dependency_overrides[get_session] = override_get_session
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as ac:
+        yield ac
+    app.dependency_overrides.clear()
+
+
+# ---------------------------------------------------------------------------
+# Helper factories
+# ---------------------------------------------------------------------------
+
+
+async def create_user_and_login(
+    client: AsyncClient,
+    email: str = "user@example.com",
+    password: str = "password123",
+    full_name: str = "Test User",
+) -> tuple[dict, str]:
+    """Register a user and return (user_json, access_token)."""
+    reg_resp = await client.post(
+        "/api/v1/auth/register",
+        json={"email": email, "password": password, "full_name": full_name},
+    )
+    assert reg_resp.status_code == 201, reg_resp.text
+
+    login_resp = await client.post(
+        "/api/v1/auth/login",
+        data={"username": email, "password": password},
+        headers={"Content-Type": "application/x-www-form-urlencoded"},
+    )
+    assert login_resp.status_code == 200, login_resp.text
+    return reg_resp.json(), login_resp.json()["access_token"]