{
  "handle": "DetectorSelfTest",
  "gloss": "Test the detectors that guard a process, so their silence is not mistaken for health",
  "mechanism": "On a stated schedule, known faults are injected or replayed, and each {{monitor}} or check that guards a process is confirmed to catch them. A detector that misses a known fault is marked failed and repaired before the process relies on it again.",
  "invariants": [
    "Each detector is tested with a known fault on a stated schedule.",
    "A detector that misses a known fault is marked failed and is not relied on until it is repaired."
  ],
  "failure_modes": [
    "Silent monitor: a detector stops firing and its silence is read as health.",
    "Test-only detection: detectors catch the injected faults but not real ones."
  ],
  "_meta": {
    "path": [
      "Infrastructure",
      "Verification"
    ],
    "ring": 2,
    "tier": 2,
    "related": [
      "StateAudit",
      "StopDrill",
      "Regulapse",
      "AbsenceEvidence"
    ],
    "minted": "2026-10-05T22:01:01+02:00",
    "caution": "Injected or replayed faults can fire the real responses their detectors drive — keep test faults tagged and isolated from live state."
  },
  "sema_id": "sema:DetectorSelfTest#mh:SHA-256:8d48b9e7f6dbfc6ea93f0de86259339a64d1ad994089f2ff5d8642b1d2cc842a",
  "sema_ref": "DetectorSelfTest#8d48",
  "sema_stub": "8d48",
  "dependencies": {
    "references": {
      "monitor": "sema:Monitor#mh:SHA-256:d31621c43589a14a237d53b3ff53c360b841cea6fe8fa8b7dc90724a686fcf8f"
    }
  },
  "sema_layer": "Infrastructure",
  "sema_category": "Verification",
  "used_by": {
    "references": {
      "ClosureConservationCheck": "sema:ClosureConservationCheck#mh:SHA-256:3aa4a97c655aa4c572021d6412fe494d8d5a40eb1627849eb22e207e05fba3f5",
      "MeaningChangeSweep": "sema:MeaningChangeSweep#mh:SHA-256:b1e06b26420768c8bb55aa8d13a1f3b8a719111364f28c4c6b2175f4f50f2369"
    }
  }
}