App group rebind bug#427
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Two PRs merged to main against the (now-replaced) Flask backend; the operation-layer changes auto-merged during the rebase, this commit ports the matching view-layer changes to the FastAPI routers and fixes the upstream-added tests for the new harness. PR #427 (App group rebind bug) - api/routers/groups.py PUT /api/groups/{id}: refuse to rebind an AppGroup to a different `app_id` unless the caller is an Access admin or owns the target app. Apply the rebind when the type isn't also changing — type-change rebinds keep going through ModifyGroupType. The Flask version relied on `schema.load(request.json, instance=group, partial=True)` to apply app_id; the FastAPI router updates it explicitly. PR #426 (Create app + reserved-prefix group bug fixes) - api/routers/apps.py POST /api/apps: 409 if an owner group with the target name already exists *with owners* — otherwise CreateApp would silently absorb a squatted owner group. - api/routers/groups.py POST /api/groups: 400 on reserved prefixes that don't match the group type (`App-` for non-AppGroup, `Role-` for non-RoleGroup, the `-Owners` suffix on a directly-created AppGroup). - api/routers/groups.py PUT /api/groups/{id}: same prefix check, but resolved against the *final* group type so a legitimate OktaGroup→AppGroup/RoleGroup conversion still works. Wrap ModifyGroupType in try/except for ValueError → 400. Test ports - Rewrote Flask-era signatures (`app: Flask`, `client: FlaskClient`, `db: SQLAlchemy`) to the FastAPI harness (`FastAPI`, `TestClient`, `Any`). Added the missing `url_for` fixture to the upstream-added tests, swapped `rep.get_json()` → `rep.json()`, and replaced one `app.config["CURRENT_OKTA_USER_EMAIL"]` access with `settings.…`. Verified: `pytest tests/` 283/283, `ruff check`/`format`, `mypy .` all green. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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A group owner could rebind an existing app group to a different app they don't own by changing the app_id in a PUT request, bypassing app-level authorization boundaries and retaining ownership of the moved group.
Fixed it and added a new test