"""Regression tests for #48820 (4th repro): job-object teardown killed the
post-update respawned gateway silently, and the updater printed
"✓ Restarting Windows gateway profile(s)" anyway.

Two fixes under test:

1. ``_spawn_gateway_restart_watcher``'s inlined watcher source must
   (a) route the respawned gateway's stray stdout/stderr to
       ``logs/gateway-stdio.log`` (it was ``DEVNULL`` — a gateway killed by
       parent Job Object teardown left ZERO trace anywhere), and
   (b) stamp ``_HERMES_GATEWAY_BREAKAWAY`` =1/0 on the respawn env exactly
       like the canonical ``gateway_windows._spawn_detached``, so the
       lifecycle/exit-diag records show whether the gateway escaped the
       parent's Job Object.

2. ``_resume_windows_gateways_after_update`` must verify a stable gateway
   process actually exists (via ``gateway_windows._wait_for_gateway_ready``)
   before printing the ✓ — a truthy launch return only proves the watcher
   process was created, not that the respawned gateway survived the
   updater's Job Object teardown.
"""

import hermes_cli.gateway as gateway

# ---------------------------------------------------------------------------
# 1. Watcher template contract
# ---------------------------------------------------------------------------

def _captured_watcher_source(monkeypatch) -> str:
    """Spawn the watcher with a mocked Popen and return the inlined -c source."""
    captured = {}

    def fake_popen(argv, **kwargs):
        captured["argv"] = argv
        captured["kwargs"] = kwargs

        class _P:
            pid = 12345

        return _P()

    monkeypatch.setattr(gateway.subprocess, "Popen", fake_popen)
    assert gateway._spawn_gateway_restart_watcher(
        999999, ["python", "-m", "hermes_cli.main", "gateway", "run"]
    )
    argv = captured["argv"]
    assert argv[1] == "-c"
    return argv[2]

class TestWatcherRespawnTemplate:

    def test_respawn_source_compiles(self, monkeypatch):
        """The inlined -c template is built via str.format over a
        dedented literal — guard against brace/indentation regressions."""
        src = _captured_watcher_source(monkeypatch)
        compile(src, "<watcher>", "exec")

# ---------------------------------------------------------------------------
# 2. Post-update resume liveness gate
# ---------------------------------------------------------------------------