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mizan/backends/mizan-fastapi/tests/test_parity.py

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3.2 KiB
Python

"""FastAPI parity with Django: X-Mizan-Invalidate header, origin cache, token auth."""
from __future__ import annotations
import pytest
from fastapi import Depends, FastAPI
from fastapi.testclient import TestClient
from pydantic import BaseModel
from mizan_core.auth import AuthConfig, JWTConfig, create_access_token
from mizan_core.cache.backend import MemoryCache
from mizan_core.client.function import client
from mizan_core.dispatch import CacheOrchestrator
from mizan_core.registry import clear_registry, register
from mizan_fastapi import (
MizanAuthMiddleware,
MizanConfig,
MizanError,
mizan_auth,
mizan_exception_handler,
router as mizan_router,
)
class Out(BaseModel):
ok: bool
SECRET = "x" * 32
JWT = JWTConfig(private_key=SECRET, public_key=SECRET)
def _app(*, with_cache=False, with_auth_dep=False) -> FastAPI:
clear_registry()
UserCtx = "user"
@client(context=UserCtx)
def user_profile(request, user_id: int) -> Out:
return Out(ok=True)
@client(affects=UserCtx)
def update_profile(request, user_id: int) -> Out:
return Out(ok=True)
@client(auth=True)
def whoami(request) -> Out:
return Out(ok=True)
register(user_profile, "user_profile")
register(update_profile, "update_profile")
register(whoami, "whoami")
app = FastAPI()
cache = CacheOrchestrator(MemoryCache(), SECRET) if with_cache else CacheOrchestrator(None, None)
app.state.mizan_config = MizanConfig(auth=AuthConfig(jwt=JWT), cache=cache)
deps = [Depends(mizan_auth())] if with_auth_dep else []
app.include_router(mizan_router, prefix="/api/mizan", dependencies=deps)
app.add_exception_handler(MizanError, mizan_exception_handler)
return app
def test_mutation_emits_invalidate_header():
c = TestClient(_app())
r = c.post("/api/mizan/call/", json={"fn": "update_profile", "args": {"user_id": 5}})
assert r.status_code == 200
assert r.json()["invalidate"] == [{"context": "user", "params": {"user_id": 5}}]
assert r.headers["X-Mizan-Invalidate"] == "user;user_id=5"
def test_origin_cache_hit_miss():
c = TestClient(_app(with_cache=True))
r1 = c.get("/api/mizan/ctx/user/", params={"user_id": 5})
assert r1.status_code == 200 and r1.headers["X-Mizan-Cache"] == "MISS"
r2 = c.get("/api/mizan/ctx/user/", params={"user_id": 5})
assert r2.headers["X-Mizan-Cache"] == "HIT"
assert r1.content == r2.content
def test_auth_required_rejects_anonymous():
c = TestClient(_app())
r = c.post("/api/mizan/call/", json={"fn": "whoami", "args": {}})
assert r.status_code == 401
def test_auth_required_passes_with_bearer_jwt():
c = TestClient(_app(with_auth_dep=True))
tok = create_access_token("7", "sess", JWT, is_staff=True)
r = c.post("/api/mizan/call/", json={"fn": "whoami", "args": {}},
headers={"Authorization": f"Bearer {tok}"})
assert r.status_code == 200 and r.json()["result"] == {"ok": True}
def test_invalid_bearer_token_rejected():
c = TestClient(_app())
r = c.post("/api/mizan/call/", json={"fn": "update_profile", "args": {"user_id": 1}},
headers={"Authorization": "Bearer not-a-real-token"})
assert r.status_code == 401