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mimic-big/backend/tests/integration/test_auth_engagement_e2e.py
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fix(backend): JSON error envelope for every HTTPException + strict_slashes=False
Two issues spotted by ux-frontend consuming docs/api.md against the actual
code path:

1. `flask.abort(...)` returned the Werkzeug HTML error page for 400/403/404/
   422/etc. — only the 401 paths going through `api_error()` and the
   Flask-Login `unauthorized_handler` honoured the `{error, message}`
   envelope the contract promised. The frontend's `ApiClientError.body`
   parser was forced to fall back to a raw string, and the 422 case
   could not surface Pydantic per-field errors.

   Fix: register `@app.errorhandler(HTTPException)` that serialises every
   `HTTPException` to the same JSON envelope. 422s gain a `details: [...]`
   field holding the Pydantic `errors()` list (`loc` / `msg` / `type`),
   matching the shape now documented in `docs/api.md`.

   A `_HTTP_ERROR_CODES` map maps statuses to stable snake_case codes
   (`bad_request`, `not_found`, `method_not_allowed`,
   `validation_error`, `forbidden`, `internal_error`, ...). Unknown
   statuses fall back to `http_error`.

   `description` is `cast(object, ...)` because the Werkzeug stub pins it
   to `str | None` while `flask.abort(..., description=<list>)` is the
   officially supported way to smuggle a Pydantic errors list to the
   handler.

2. `@bp.get("")` on the engagements blueprint produced `/api/v1/engagements`
   (no slash). Hitting it with a trailing slash issued a 308 redirect,
   and some browsers drop the session cookie across that hop.

   Fix: `app.url_map.strict_slashes = False`. Both forms now match the
   same handler without redirect.

5 new integration tests cover the new envelope shape (422 with details,
unknown 404, malformed-JSON 400) and the dual-slash matching. `docs/api.md`
rewritten to reflect the table of stable codes, the `details` shape, and
the no-trailing-slash convention. `CHANGELOG.md` gains a follow-up entry.

Verification: ruff check / mypy --strict / pytest tests/unit all green
(61 unit + 5 new integration).
2026-05-23 04:33:23 +02:00

203 lines
7.1 KiB
Python

"""End-to-end smoke: login → create engagement → list engagement (sprint 1).
Uses the testcontainers Postgres scaffold + Flask test client. Each test
seeds a single RT-lead user and signs in over the session-cookie surface
the frontend will consume.
"""
from __future__ import annotations
from uuid import UUID
import pytest
from mimic.auth.password import hash_password
from mimic.db.models import Group, User, UserGroup
from mimic.db.types import UserType
from mimic.rbac.matrix import GROUP_PERMISSIONS, GroupName, Permission
pytestmark = pytest.mark.integration
def _seed_rt_lead(
db,
email: str = "lead@example.org",
password: str = "lead-secret-1", # noqa: S107
) -> UUID:
"""Create an rt_lead user + the rt_lead group + the membership link."""
group = db.session.query(Group).filter_by(name=GroupName.RT_LEAD.value).first()
if group is None:
group = Group(name=GroupName.RT_LEAD.value, description="Red team lead")
db.session.add(group)
db.session.flush()
user = User(
email=email,
display_name="Lead",
type=UserType.RT_LEAD,
local_password_hash=hash_password(password, rounds=4),
)
db.session.add(user)
db.session.flush()
db.session.add(UserGroup(user_id=user.id, group_id=group.id, engagement_id=None))
db.session.commit()
return user.id
def test_login_then_create_and_list_engagement(app, client) -> None:
from mimic.extensions import db # noqa: PLC0415 (must follow app fixture)
with app.app_context():
_seed_rt_lead(db)
# 1. /me before login → 401, uniform envelope.
response = client.get("/api/v1/auth/me")
assert response.status_code == 401
body = response.get_json()
assert body == {"error": "not_authenticated", "message": "no active session"}
# 2. login → 200, body shape matches CurrentUser, session cookie set.
response = client.post(
"/api/v1/auth/login",
json={"username": "lead@example.org", "password": "lead-secret-1"},
)
assert response.status_code == 200
user_payload = response.get_json()
assert user_payload["username"] == "lead@example.org"
assert user_payload["role"] == "rt_lead"
assert Permission.ENGAGEMENT_CREATE.value in user_payload["permissions"]
assert sorted(user_payload["permissions"]) == sorted(
p.value for p in GROUP_PERMISSIONS[GroupName.RT_LEAD]
)
# 3. /me after login → 200, same shape.
response = client.get("/api/v1/auth/me")
assert response.status_code == 200
assert response.get_json()["username"] == "lead@example.org"
# 4. POST /engagements → 201, created_by_id is current user.
response = client.post(
"/api/v1/engagements/",
json={"client_name": "Acme Demo", "c2_type": "mythic"},
)
assert response.status_code == 201
engagement = response.get_json()
assert engagement["client_name"] == "Acme Demo"
# 5. GET /engagements lists it (RT lead sees everything).
response = client.get("/api/v1/engagements/")
assert response.status_code == 200
listing = response.get_json()
assert any(e["id"] == engagement["id"] for e in listing)
# 6. logout → 204; subsequent /me → 401.
response = client.post("/api/v1/auth/logout")
assert response.status_code == 204
response = client.get("/api/v1/auth/me")
assert response.status_code == 401
def test_login_rejects_bad_credentials(app, client) -> None:
from mimic.extensions import db # noqa: PLC0415
with app.app_context():
_seed_rt_lead(db, email="bob@example.org", password="hunter2")
# Wrong password.
response = client.post(
"/api/v1/auth/login",
json={"username": "bob@example.org", "password": "wrong"},
)
assert response.status_code == 401
assert response.get_json() == {
"error": "invalid_credentials",
"message": "invalid username or password",
}
# Unknown user — same uniform message (no enumeration leak).
response = client.post(
"/api/v1/auth/login",
json={"username": "ghost@example.org", "password": "hunter2"},
)
assert response.status_code == 401
assert response.get_json() == {
"error": "invalid_credentials",
"message": "invalid username or password",
}
def test_logout_without_session_returns_401(app, client) -> None:
response = client.post("/api/v1/auth/logout")
assert response.status_code == 401
assert response.get_json() == {"error": "not_authenticated", "message": "no active session"}
def test_engagements_route_accepts_both_slash_variants(app, client) -> None:
"""strict_slashes=False: `/engagements` and `/engagements/` both match
the same handler — no 308 redirect that would drop the session cookie
on some browsers (frontend fix request)."""
from mimic.extensions import db # noqa: PLC0415
with app.app_context():
_seed_rt_lead(db, email="dual@example.org", password="dual-slash-1")
client.post(
"/api/v1/auth/login",
json={"username": "dual@example.org", "password": "dual-slash-1"},
)
no_slash = client.get("/api/v1/engagements")
with_slash = client.get("/api/v1/engagements/")
assert no_slash.status_code == 200
assert with_slash.status_code == 200
assert no_slash.get_json() == with_slash.get_json()
def test_engagement_create_validation_error_returns_uniform_envelope(app, client) -> None:
"""Pydantic 422 must flow through the global handler with `details`
carrying the per-field error list (frontend uses it for form mapping)."""
from mimic.extensions import db # noqa: PLC0415
with app.app_context():
_seed_rt_lead(db, email="form@example.org", password="form-secret-1")
client.post(
"/api/v1/auth/login",
json={"username": "form@example.org", "password": "form-secret-1"},
)
response = client.post("/api/v1/engagements", json={"description": "no client name"})
assert response.status_code == 422
body = response.get_json()
assert body["error"] == "validation_error"
assert body["message"] == "request failed"
assert isinstance(body["details"], list)
locs = [tuple(entry["loc"]) for entry in body["details"]]
assert ("client_name",) in locs
def test_unknown_route_returns_uniform_404(app, client) -> None:
response = client.get("/api/v1/does-not-exist")
assert response.status_code == 404
body = response.get_json()
assert body["error"] == "not_found"
assert "message" in body
def test_bad_json_body_returns_uniform_400(app, client) -> None:
from mimic.extensions import db # noqa: PLC0415
with app.app_context():
_seed_rt_lead(db, email="raw@example.org", password="raw-secret-1")
client.post(
"/api/v1/auth/login",
json={"username": "raw@example.org", "password": "raw-secret-1"},
)
response = client.post(
"/api/v1/engagements",
data="not-json",
content_type="application/json",
)
assert response.status_code == 400
body = response.get_json()
assert body["error"] == "bad_request"
assert body["message"] == "JSON body required"