"""A progress checkpoint takes a FINITE position.

The JSON parser under FastAPI accepts `Infinity` and `NaN`, and both progress handlers truncate the
position with `int()` — so one hand-written checkpoint came back as a 500 with a traceback. Found in
the 2026-09 bug hunt's second review round, as the sibling of the subtitle routes' non-finite
`at`/`offset`. Pure: the body is refused before the handler touches the database.
"""

from types import SimpleNamespace

import pytest
from fastapi.testclient import TestClient

import app.state as app_state
from app.auth import current_user
from app.main import app


@pytest.fixture
def client(monkeypatch, override_dep) -> TestClient:
    override_dep(current_user, lambda: SimpleNamespace(id=1))
    monkeypatch.setattr(app_state, "_configured_cache", True)  # pass the instance-setup gate, no DB
    return TestClient(app)


@pytest.mark.parametrize("path", ["/api/videos/v1/progress", "/api/plex/item/98614/progress"])
@pytest.mark.parametrize("raw", ["Infinity", "-Infinity", "NaN"])
def test_a_non_finite_position_is_refused(client, path, raw):
    r = client.post(
        path,
        content=f'{{"position_seconds": {raw}, "duration_seconds": 3000}}',
        headers={"content-type": "application/json"},
    )
    assert r.status_code == 422, r.text