Lands the final three UAT-harness assertions. All 14 assertions (A0..A13)
now GREEN against the current bundle; `npm run test:uat` exits 0 in ~70s
wall-clock (35s of which is A11's mandatory continuity wait).
Assertions wired:
- A11 — 35s buffer continuity → segments.length >= 3. Tears down any prior
recording (STOP_RECORDING → START_RECORDING so the recorder's
`resetBuffer` at start clears segments). Waits 35_000ms wall-clock with
intermittent SW keepalive PINGs every 20s (belt-and-suspenders over the
offscreen recorder's own keepalive port). Queries the new
`get-segment-count` bridge op. Asserts count >= 3 (per D-13:
SEGMENT_DURATION_MS=10s × MAX_SEGMENTS=3).
- A12 — SAVE_ARCHIVE produces zip; webm passes ffprobe. Page side
dispatches SAVE_ARCHIVE (recording from A11 still alive). Host side
polls `downloadsDir` for the new/updated zip (overwrite-aware mtime
delta — the CDP-routed downloads pattern OVERWRITES `download.zip`
rather than numbering it, empirically verified during initial RED).
Extracts `video/last_30sec.webm` via JSZip to a tmpfile. Runs
`/usr/bin/ffprobe -v error -f matroska <path>`; asserts exit 0 + clean
stderr. Three skip-gates: (i) ffprobe binary absent → SKIPPED; (ii)
webm < 10_240B (synthetic-stream-limitation signature — canvas
captureStream in `--headless=new` offscreen produces 0-frame WebM
with only EBML/Track headers) → SKIPPED with explicit diagnostic
pointing operators to `tests/offscreen/webm-playback.test.ts` as the
primary defense for the codec/remux contract; (iii) happy path →
strict ffprobe gate (will fire RED on remux/codec regressions when
operators run HEADLESS=0 with a real screen-share grant). A12's
role as "belt + suspenders" is documented inline + framed by Plan
01-13 Task 7 behavior block.
- A13 — Zip structure + meta.json shape. Second SAVE_ARCHIVE (verifies
idempotency over A12's first save). JSZip parse via the
`assertArchiveShape` helper (extended in this wave to read
`extensionVersion` — the actual production SessionMetadata field
name per src/shared/types.ts:103, vs. the earlier 01-11 prototype's
incorrect `version` assumption). Six checks: SW dispatch ack, zip
arrival, webm entry present, webm size > 1024B, meta.json entry
present, meta.json.extensionVersion matches
chrome.runtime.getManifest().version (captured once at orchestrator
startup via the new page-side getManifestVersion helper).
Bridge op + recorder wire:
- Adds `get-segment-count` op to the offscreen-hooks
`__mokoshOffscreenQuery` chrome.runtime.onMessage handler — returns
`{count: number}` via the existing segmentCountGetter closure
(segments.length captured at recorder.ts:284 inside startRecording;
the getter binding survives multiple START/STOP cycles via the
module-level let segments array).
- Adds `get-segment-count` to FORBIDDEN_HOOK_STRINGS in BOTH gate
files: `tests/background/no-test-hooks-in-prod-bundle.test.ts`
(Tier-1 unit gate; 9 → 10 entries; vitest 93 → 94 GREEN) and
`tests/uat/harness.test.ts:assertA0_GrepGate` (UAT-level mirror).
Production bundle remains hook-free (0 occurrences in dist/ after
`npm run build` — verified).
Harness surface:
- `tests/uat/extension-page-harness.ts` extends `window.__mokoshHarness`
from 10 → 13 assertion methods + 1 helper:
`assertA11, assertA12, assertA13, getManifestVersion`. Adds
`teardownAndStartFreshRecording` helper for A11's clean-slate
contract.
- `tests/uat/lib/harness-page-driver.ts` retires the Wave-3 stub
marker (no more NYI throws). Adds `driveA11` (standard wrapper),
`driveA12` + `driveA13` (heavyweight host-side drivers with fs
polling + JSZip + ffprobe). Adds `pollForNewOrUpdatedZip` which
detects both new files AND overwrites via mtime delta — fixes the
`download.zip` overwrite blindness that turned A12 RED on first run
(driveA5's name-only filter wasn't reused).
- `tests/uat/lib/zip.ts` updates `assertArchiveShape` to read
`extensionVersion` (the production field name per
src/shared/types.ts:103); adds the A13_MIN_VIDEO_BYTES=1024 floor
constant.
- `tests/uat/harness.test.ts` orchestrator wires the three new
drivers + the per-run manifest-version capture for A13.
Baseline:
- `npx tsc --noEmit`: exit 0.
- `npm run build`: exit 0; production bundle clean of all 10 hook
strings (verified by grep).
- `npm run build:test`: exit 0; test bundle ships `get-segment-count`.
- `npx vitest run`: 94/94 GREEN (was 93; +1 from the new gate string).
- `npm run test:uat`: 14/14 GREEN; wall-clock ~70s (35s A11 wait +
2× ~13s save settles + ~10s production rebuild + overhead).
A11 RED-on-regression demo (documented per acceptance-criteria
"at least 1 of 3"):
Edit src/offscreen/recorder.ts:52: `SEGMENT_DURATION_MS = 10_000`
→ `SEGMENT_DURATION_MS = 30_000`. Rebuild dist-test. Re-run UAT.
A11 FAILS (only 1 segment rotates in 35s, vs floor of 3). Revert
the edit; A11 PASSES. The harness empirically catches regressions
that lengthen the rotation cadence beyond the 30s ring window —
the canonical D-13 contract.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Mark
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