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9 changes: 8 additions & 1 deletion scripts/ci/soft_deadlock_detector.py
Original file line number Diff line number Diff line change
Expand Up @@ -84,6 +84,13 @@ def _default_runner(cmd, **kwargs): # pragma: no cover - trivial default
return subprocess.run(cmd, **kwargs)


def _now():
"""Horloge du détecteur, injectable en test (fixtures ancrées à une date
fixe : sans injection, un test de main() devient rouge 24 h après sa
rédaction, le churn des fixtures sortant de la fenêtre --window-hours)."""
return datetime.now(timezone.utc)


def _parse_ts(value: str) -> datetime:
"""ISO-8601 GitHub (« 2026-09-05T20:21:00Z ») -> datetime UTC aware.

Expand Down Expand Up @@ -272,7 +279,7 @@ def main(argv: Optional[list] = None) -> int:
help="rc=2 si au moins une détection (pour cron)")
args = parser.parse_args(argv)

now = datetime.now(timezone.utc)
now = _now()
try:
prs = fetch_open_prs(args.repo, limit=args.limit)
candidates = analyze(
Expand Down
5 changes: 5 additions & 0 deletions scripts/tests/test_soft_deadlock_detector.py
Original file line number Diff line number Diff line change
Expand Up @@ -207,6 +207,11 @@ def fake_runner(cmd, **kwargs):
{"commits": [{"committedDate": _ts(100)}]}))

_patch_runner(monkeypatch, fake_runner)
# Ancrer l'horloge de main() au NOW des fixtures : sans injection, le
# now réel dérive d'un jour et le churn (commentaires à <24 h de NOW)
# sort de la fenêtre — la conjonction casse et le test rougit 24 h
# après sa rédaction (mesuré le 2026-10-02 sur main, rc 0 != 2).
monkeypatch.setattr(sdd, "_now", lambda: NOW)
assert sdd.main(["--fail-on-findings", "--limit", "10"]) == 2
assert sdd.main(["--limit", "10"]) == 0
capsys.readouterr() # vide le buffer : la sortie --json doit être seule
Expand Down
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