Add backend monitor and notification tests

backend/tests/conftest.py

@@ -0,0 +1,51 @@
+from collections.abc import Generator
+
+import pytest
+from fastapi.testclient import TestClient
+from sqlalchemy import create_engine
+from sqlalchemy.orm import Session, sessionmaker
+from sqlalchemy.pool import StaticPool
+
+from app.auth.dependencies import get_current_user
+from app.db.session import get_db
+from app.main import app
+from app.models import Base, User
+
+
+@pytest.fixture
+def db_session() -> Generator[Session, None, None]:
+    engine = create_engine(
+        "sqlite://",
+        connect_args={"check_same_thread": False},
+        poolclass=StaticPool,
+    )
+    Base.metadata.create_all(bind=engine)
+    testing_session_local = sessionmaker(bind=engine, autoflush=False, autocommit=False)
+
+    with testing_session_local() as session:
+        yield session
+
+    Base.metadata.drop_all(bind=engine)
+    engine.dispose()
+
+
+@pytest.fixture
+def client(db_session: Session) -> Generator[TestClient, None, None]:
+    def override_get_db() -> Generator[Session, None, None]:
+        yield db_session
+
+    def override_current_user() -> User:
+        return User(
+            id=1,
+            email="owner@example.com",
+            display_name="Test Owner",
+            hashed_password="not-used",
+            role="owner",
+            is_active=True,
+        )
+
+    app.dependency_overrides[get_db] = override_get_db
+    app.dependency_overrides[get_current_user] = override_current_user
+    with TestClient(app) as test_client:
+        yield test_client
+    app.dependency_overrides.clear()