"""Unit tests for the F2-12 owned upgrade-convergence wait (P7-negative / non-vacuousness).

F2-12 fix: the upgrade chaos redeploy runs with `abra … -c` (skips abra's own convergence monitor),
and the harness OWNS the verification via `lifecycle.wait_healthy` (services N/N + app HEALTH_PATH)
then `lifecycle.wait_ready_probes` (recipe READY_PROBE, e.g. collabora WOPI discovery → 200). Skipping
abra's monitor is only acceptable if the replacement genuinely FAILS a broken convergence rather than
green-washing it (plan §7.1 / Adversary pre-claim recon 2026-05-29). These tests prove exactly that,
deterministically (fake clock, no deploy):
  - wait_ready_probes RAISES when the probe never returns an OK status (stuck service).
  - wait_ready_probes RETURNS when the probe reaches OK (and is a no-op without a READY_PROBE).
  - wait_healthy RAISES when services never converge, and when they converge but HTTP never serves OK.
So `-c` + owned-wait is non-vacuous: a genuinely-broken upgrade stays RED.
"""

from __future__ import annotations

import os
import sys

import pytest

sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "..", "runner"))
from harness import lifecycle as lc  # noqa: E402


def _fake_clock(monkeypatch):
    """Install a fake monotonic clock on lifecycle.time so sleeps advance it without real waiting."""
    state = {"t": 1000.0}
    monkeypatch.setattr(lc.time, "time", lambda: state["t"])
    monkeypatch.setattr(lc.time, "sleep", lambda s: state.__setitem__("t", state["t"] + s))
    return state


_DRIVE_META = {
    "READY_PROBE": lambda d: [{"host": f"collabora-{d}", "path": "/hosting/discovery", "ok": (200,)}]
}


def test_wait_ready_probes_raises_when_never_ready(monkeypatch):
    """A READY_PROBE that never returns 200 (collabora discovery wedged) must raise TimeoutError —
    NOT silently pass. This is what makes `-c` + owned-wait catch a genuinely stuck upgrade."""
    _fake_clock(monkeypatch)
    monkeypatch.setattr(lc, "http_get", lambda host, path="/", timeout=15: 404)
    with pytest.raises(TimeoutError):
        lc.wait_ready_probes(_DRIVE_META, "lasu-x.ci.commoninternet.net", timeout=120)


def test_wait_ready_probes_returns_when_ready(monkeypatch):
    """When the probe reaches 200, it returns (no raise)."""
    _fake_clock(monkeypatch)
    monkeypatch.setattr(lc, "http_get", lambda host, path="/", timeout=15: 200)
    lc.wait_ready_probes(_DRIVE_META, "lasu-x.ci.commoninternet.net", timeout=120)  # no raise


def test_wait_ready_probes_noop_without_probe(monkeypatch):
    """A recipe with no READY_PROBE is a clean no-op (default behavior preserved for all recipes)."""
    monkeypatch.setattr(lc, "http_get", lambda *a, **k: 599)  # would fail if it were consulted
    lc.wait_ready_probes({}, "x.ci.commoninternet.net", timeout=1)  # no raise, no call


def test_wait_healthy_raises_when_services_never_converge(monkeypatch):
    """If swarm services never reach N/N, wait_healthy must raise (the upgrade op then fails the tier)."""
    _fake_clock(monkeypatch)
    monkeypatch.setattr(lc, "services_converged", lambda domain: False)
    monkeypatch.setattr(lc, "http_get", lambda *a, **k: 200)  # irrelevant; convergence gates first
    with pytest.raises(TimeoutError):
        lc.wait_healthy("x.ci.commoninternet.net", deploy_timeout=60, http_timeout=60)


def test_wait_healthy_raises_when_converged_but_never_serves(monkeypatch):
    """Services converged but the app never returns an OK status → wait_healthy raises (non-vacuous)."""
    _fake_clock(monkeypatch)
    monkeypatch.setattr(lc, "services_converged", lambda domain: True)
    monkeypatch.setattr(lc, "http_get", lambda *a, **k: 502)
    with pytest.raises(TimeoutError):
        lc.wait_healthy("x.ci.commoninternet.net", ok_codes=(200,), deploy_timeout=60, http_timeout=60)