Files
BanGUI/backend/tests/test_routers/test_auth.py
Lukas d931e8c6a3 Reduce per-request DB overhead (Task 4)
- Cache setup_completed flag in app.state._setup_complete_cached after
  first successful is_setup_complete() call; all subsequent API requests
  skip the DB query entirely (one-way transition, cleared on restart).
- Add in-memory session token TTL cache (10 s) in require_auth; the second
  request with the same token within the window skips session_repo.get_session.
- Call invalidate_session_cache() on logout so revoked tokens are evicted
  immediately rather than waiting for TTL expiry.
- Add clear_session_cache() for test isolation.
- 5 new tests covering the cached fast-path for both optimisations.
- 460 tests pass, 83% coverage, zero ruff/mypy warnings.
2026-03-10 19:16:00 +01:00

253 lines
8.9 KiB
Python

"""Tests for the auth router (POST /api/auth/login, POST /api/auth/logout)."""
from __future__ import annotations
from unittest.mock import patch
import pytest
from httpx import AsyncClient
# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------
_SETUP_PAYLOAD = {
"master_password": "mysecretpass1",
"database_path": "bangui.db",
"fail2ban_socket": "/var/run/fail2ban/fail2ban.sock",
"timezone": "UTC",
"session_duration_minutes": 60,
}
async def _do_setup(client: AsyncClient) -> None:
"""Run the setup wizard so auth endpoints are reachable."""
resp = await client.post("/api/setup", json=_SETUP_PAYLOAD)
assert resp.status_code == 201
async def _login(client: AsyncClient, password: str = "mysecretpass1") -> str:
"""Helper: perform login and return the session token."""
resp = await client.post("/api/auth/login", json={"password": password})
assert resp.status_code == 200
return str(resp.json()["token"])
# ---------------------------------------------------------------------------
# Login
# ---------------------------------------------------------------------------
class TestLogin:
"""POST /api/auth/login."""
async def test_login_succeeds_with_correct_password(
self, client: AsyncClient
) -> None:
"""Login returns 200 and a session token for the correct password."""
await _do_setup(client)
response = await client.post(
"/api/auth/login", json={"password": "mysecretpass1"}
)
assert response.status_code == 200
body = response.json()
assert "token" in body
assert len(body["token"]) > 0
assert "expires_at" in body
async def test_login_sets_cookie(self, client: AsyncClient) -> None:
"""Login sets the bangui_session HttpOnly cookie."""
await _do_setup(client)
response = await client.post(
"/api/auth/login", json={"password": "mysecretpass1"}
)
assert response.status_code == 200
assert "bangui_session" in response.cookies
async def test_login_fails_with_wrong_password(
self, client: AsyncClient
) -> None:
"""Login returns 401 for an incorrect password."""
await _do_setup(client)
response = await client.post(
"/api/auth/login", json={"password": "wrongpassword"}
)
assert response.status_code == 401
async def test_login_rejects_empty_password(self, client: AsyncClient) -> None:
"""Login returns 422 when password field is missing."""
await _do_setup(client)
response = await client.post("/api/auth/login", json={})
assert response.status_code == 422
# ---------------------------------------------------------------------------
# Logout
# ---------------------------------------------------------------------------
class TestLogout:
"""POST /api/auth/logout."""
async def test_logout_returns_200(self, client: AsyncClient) -> None:
"""Logout returns 200 with a confirmation message."""
await _do_setup(client)
await _login(client)
response = await client.post("/api/auth/logout")
assert response.status_code == 200
assert "message" in response.json()
async def test_logout_clears_cookie(self, client: AsyncClient) -> None:
"""Logout clears the bangui_session cookie."""
await _do_setup(client)
await _login(client) # sets cookie on client
response = await client.post("/api/auth/logout")
assert response.status_code == 200
# Cookie should be set to empty / deleted in the Set-Cookie header.
set_cookie = response.headers.get("set-cookie", "")
assert "bangui_session" in set_cookie
async def test_logout_is_idempotent(self, client: AsyncClient) -> None:
"""Logout succeeds even when called without a session token."""
await _do_setup(client)
response = await client.post("/api/auth/logout")
assert response.status_code == 200
async def test_session_invalid_after_logout(
self, client: AsyncClient
) -> None:
"""A session token is rejected after logout."""
await _do_setup(client)
token = await _login(client)
await client.post("/api/auth/logout")
# Now try to use the invalidated token via Bearer header. The health
# endpoint is unprotected so we validate against a hypothetical
# protected endpoint by inspecting the auth service directly.
# Here we just confirm the token is no longer in the DB by trying
# to re-use it on logout (idempotent — still 200, not an error).
response = await client.post(
"/api/auth/logout",
headers={"Authorization": f"Bearer {token}"},
)
assert response.status_code == 200
# ---------------------------------------------------------------------------
# Auth dependency (protected route guard)
# ---------------------------------------------------------------------------
class TestRequireAuth:
"""Verify the require_auth dependency rejects unauthenticated requests."""
async def test_health_endpoint_requires_no_auth(
self, client: AsyncClient
) -> None:
"""Health endpoint is accessible without authentication."""
# ---------------------------------------------------------------------------
# Session-token cache (Task 4)
# ---------------------------------------------------------------------------
class TestRequireAuthSessionCache:
"""In-memory session token cache inside ``require_auth``."""
@pytest.fixture(autouse=True)
def reset_cache(self) -> None: # type: ignore[misc]
"""Flush the session cache before and after every test in this class."""
from app import dependencies
dependencies.clear_session_cache()
yield # type: ignore[misc]
dependencies.clear_session_cache()
async def test_second_request_skips_db(self, client: AsyncClient) -> None:
"""Second authenticated request within TTL skips the session DB query.
The first request populates the in-memory cache via ``require_auth``.
The second request — using the same token before the TTL expires —
must return ``session_repo.get_session`` *without* calling it.
"""
from app.repositories import session_repo
await _do_setup(client)
token = await _login(client)
# Ensure cache is empty so the first request definitely hits the DB.
from app import dependencies
dependencies.clear_session_cache()
call_count = 0
original_get_session = session_repo.get_session
async def _tracking(db, tok): # type: ignore[no-untyped-def]
nonlocal call_count
call_count += 1
return await original_get_session(db, tok)
with patch.object(session_repo, "get_session", side_effect=_tracking):
resp1 = await client.get(
"/api/dashboard/status",
headers={"Authorization": f"Bearer {token}"},
)
resp2 = await client.get(
"/api/dashboard/status",
headers={"Authorization": f"Bearer {token}"},
)
assert resp1.status_code == 200
assert resp2.status_code == 200
# DB queried exactly once: the first request populates the cache,
# the second request is served entirely from memory.
assert call_count == 1
async def test_token_enters_cache_after_first_auth(
self, client: AsyncClient
) -> None:
"""A successful auth request places the token in ``_session_cache``."""
from app import dependencies
await _do_setup(client)
token = await _login(client)
dependencies.clear_session_cache()
assert token not in dependencies._session_cache
await client.get(
"/api/dashboard/status",
headers={"Authorization": f"Bearer {token}"},
)
assert token in dependencies._session_cache
async def test_logout_evicts_token_from_cache(
self, client: AsyncClient
) -> None:
"""Logout removes the session token from the in-memory cache immediately."""
from app import dependencies
await _do_setup(client)
token = await _login(client)
# Warm the cache.
await client.get(
"/api/dashboard/status",
headers={"Authorization": f"Bearer {token}"},
)
assert token in dependencies._session_cache
# Logout must evict the entry.
await client.post(
"/api/auth/logout",
headers={"Authorization": f"Bearer {token}"},
)
assert token not in dependencies._session_cache
response = await client.get("/api/health")
assert response.status_code == 200