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mokosh/.planning/phases/02-stabilize-export-pipeline/02-01-SUMMARY.md
Mark a991e1732a docs(02-01): complete RED gate — 3 test files pin D-P2-01 + D-P2-02 + D-P2-03 + F2 
Plan 02-01 Wave 0 RED gate closed. Three failing test files (16 it()
blocks total: 11 RED + 5 GREEN regression guards) pin the locked
decisions for Phase 2 ahead of Plans 02-02 + 02-03 implementation:

  - blob-url-download.test.ts (3 RED) — D-P2-01 offscreen Blob URL
    pipeline (closes audit P0-6: base64 data: URL → blob: URL).
  - meta-json-urls-schema.test.ts (5 RED) — D-P2-02 meta.url → meta.urls
    migration + F2 empty-tracker → urls:[] resolution.
  - strict-meta-json-validation.test.ts (3 RED + 5 GREEN) — D-P2-03
    strict 8-field schema validation with EXPECTED_KEYS pin including
    planner-suggested `schemaVersion` 8th field.

Test count delta: 155 GREEN → 159 GREEN + 11 RED (+4 GREEN regression
guards, +11 RED test contracts). Vitest reporter:
  Test Files 4 failed | 27 passed (31)
  Tests 12 failed | 159 passed (171)
(12 failed = 3 + 5 + 3 RED from this plan + 1 pre-existing flaky
ffprobe test in webm-remux.test.ts — out of scope; documented in
SUMMARY.md Deferred Issues.)

Tier-1 grep gate: 13/13 GREEN preserved (this plan touches no
production code).

Planner-resolved tensions carried forward in SUMMARY.md:
  - D-P2-03 'non-empty urls[]' vs CONTEXT.md permissive empty-array →
    F2 resolved in favor of permissive (Test 3 of Task 3 relaxed).
  - 8th field name `schemaVersion` → tentative planner pick;
    Plan 02-03 implementer commits to schemaVersion: '2' const.
  - tab-url-tracker module seam → planner-suggested name
    `src/background/tab-url-tracker.ts` with getTabUrlsSeen() export.
  - Plan claim 'ALL 8 fail' reconciled honestly: 3 RED + 5 GREEN
    regression guards (timestamp/semver/totalEvents/buffer-seconds/
    duration-minutes already match current 7-field shape).

Plan suggestions reconciled with reality:
  - vitest env: 'node' not 'jsdom' (Node 24 has URL/Blob/performance
    globals; jsdom not in devDeps). FileReader polyfill inline.
  - Task 2 Test 1 source-text scan instead of tsc-compile-failure
    (vitest.config.ts typecheck:{enabled:false}).

Per worktree-mode constraint: STATE.md, ROADMAP.md, REQUIREMENTS.md
NOT modified. The orchestrator owns those writes after all worktree
agents in Wave 0 complete.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-20 15:36:09 +02:00

19 KiB
Raw Blame History

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed
phase plan subsystem tags requires provides affects tech-stack key-files key-decisions patterns-established requirements-completed duration completed
02-stabilize-export-pipeline 01 testing
tdd
red-tests
blob-url-migration
meta-json-urls-array
schema-validation
p0-6
p1-10
wave-0
export-pipeline
phase provides
01-stabilize-video-pipeline createArchive + remuxSegments + chrome stub patterns + raw-3ebml-concat.webm fixture (Plan 01-08 Wave 0 RED precedent)
3 failing test files (16 it() blocks total) pinning D-P2-01 + D-P2-02 + D-P2-03 + F2 contracts ahead of Plans 02-02 and 02-03 implementation
Blob URL download wire-format contract (chrome.downloads.download arg0.url starts with blob:, not data:application/zip;base64,)
URL.revokeObjectURL lifecycle contract (revoke fires on chrome.downloads.onChanged 'complete')
SessionMetadata.urls: string[] type-shape contract via source-text scan
createArchive meta.json shape contract (urls Array, no url field)
tab-url-tracker module seam (src/background/tab-url-tracker.ts with getTabUrlsSeen(): string[])
URL filter contract (include https + chrome-extension://; exclude chrome:// + about:)
Empty-tracker F2 contract (meta.urls === [] for whole-desktop-no-tab sessions)
Strict 8-field meta.json schema with EXPECTED_KEYS pin including planner-suggested schemaVersion 8th field
FileReader polyfill pattern for vitest Node-env Blob ingestion through JSZip
Plan 02-02 (offscreen Blob URL pipeline implementation)
Plan 02-03 (meta.json urls[] migration + tab-url-tracker + schema validation)
Plan 02-04 (UAT harness extensions A24+ — pre-checkpoint bundle gates)
All future phases that consume meta.json (downstream UAT harness, server-upload candidates)
added patterns
FileReader polyfill (Node 24 lacks FileReader; JSZip needs it for Blob ingestion)
vi.doMock for remuxSegments short-circuit (6 MB synthetic stress test)
Source-text scan for type-shape pinning (workaround for vitest.config.ts typecheck:{enabled:false})
RED-gate triple-test pattern: WIRE-FORMAT polarity guard + LATENCY budget + LIFECYCLE pin (Test 2's necessary-not-sufficient latency + wire-format combo)
Missing-module RED via dynamic-import-in-try/catch + expect.fail (mirrors Plan 01-08 webm-remux.test.ts precedent)
Three-slice fixture pattern (SEG1/SEG2/SEG3 byte offsets from raw-3ebml-concat.webm) for muxer-safe segmentation
Per-test SAVE_ARCHIVE drain helper: dispatch SAVE_ARCHIVE → resolve REQUEST_BUFFER with synthetic segments → loop until chrome.downloads.download called
created modified
tests/background/blob-url-download.test.ts (3 RED tests, ~625 lines; pins D-P2-01)
tests/background/meta-json-urls-schema.test.ts (5 RED tests, ~671 lines; pins D-P2-02 + F2)
tests/build/strict-meta-json-validation.test.ts (3 RED + 5 GREEN regression-guard tests, ~621 lines; pins D-P2-03 + F2)
Use vitest default `node` env instead of jsdom: Node 24 ships URL.createObjectURL + URL.revokeObjectURL + performance + Blob as globals. Plan's suggestion to use jsdom was incorrect (vitest.config.ts explicitly sets environment: 'node' and jsdom is not in devDependencies).
FileReader polyfill inline in each test file: Node 24 lacks FileReader; JSZip's Blob ingestion path needs it. Minimal polyfill (delegates to Blob.arrayBuffer()) installed at bootSwInRecState time.
vi.doMock('../../src/background/webm-remux') for Test 2's 6 MB scale: production muxer rejects monotonicity-breaking input shapes, so a synthetic 6 MB Blob via vi.doMock is the cleanest way to stress the download wire-format under the data-URL-cap-exceeding scale.
Test 1 (SessionMetadata shape pin) uses source-text scan instead of tsc compile failure: vitest.config.ts has typecheck:{enabled:false}, so a tsc-failure-based pin would be a no-op. Source-text regex against src/shared/types.ts is the RED gate that survives the typecheck-disabled config.
EXPECTED_KEYS 8th field tentatively `schemaVersion`: marks D-P2-02 url→urls breaking-change cutover. Plan 02-03's implementer commits to adding `schemaVersion: '2'` as a constant. Test file is canonical place to amend if a stronger 8th-field argument surfaces.
Tests 2, 4, 5, 6, 7 of Task 3 stay GREEN-today as regression guards: plan's 'ALL 8 fail' claim wasn't achievable (timestamp/semver/totalEvents/videoBufferSeconds/logDurationMinutes already match the current 7-field shape). Documented honestly; the GREEN-today tests pin the post-migration schema for regression-guard duty.
tab-url-tracker module seam: src/background/tab-url-tracker.ts with export `getTabUrlsSeen(): string[]`. Tests 3+4+5 of Task 2 use dynamic-import-with-expect.fail to surface the missing module as the RED signal. Plan 02-03 implements the module.
RED-gate triple-pin pattern: (1) precondition (download was called), (2) polarity guard (forbidden prefix absent), (3) target contract (required prefix present). Test 1 of blob-url-download.test.ts exemplifies.
Wire-format-at-scale pattern: synthetic-payload stress test + wire-format guard. The latency check is necessary but not sufficient — the wire-format guard converts a sub-budget spurious pass into a meaningful RED. Test 2 of blob-url-download.test.ts.
Source-text type-shape pin: when vitest typecheck is disabled, fall back to a regex scan of the source file body. Captures both presence (new field exists) and absence (old field removed) in one test.
Per-test SAVE_ARCHIVE driver helper: factored out runSaveAndCaptureArchiveBlob / runSaveAndCaptureDownloadArg / runAndParseMetaJson with a shared try-fire-REQUEST_BUFFER-loop. Future Phase 2 tests inherit this pattern.
GREEN-today regression-guard tests bundled with RED-today migration tests: same describe block, same setup, but the assertions are scoped to pin different layers (migration RED + stability GREEN). Future TDD plans can mix these explicitly.
~20min 2026-05-20

Phase 02 Plan 01: Wave-0 RED tests for export pipeline migration

Three failing test files (16 it() blocks) pin D-P2-01 Blob URL download contract + D-P2-02 meta.json urls[] migration + D-P2-03 strict 8-field schema validation + F2 empty-tracker resolution, ahead of Plan 02-02 + 02-03 implementation.

Performance

  • Duration: ~20 min
  • Started: 2026-05-20T13:13:59Z (baseline test capture)
  • Completed: 2026-05-20T13:33:38Z (final commit + SUMMARY)
  • Tasks: 3/3 completed
  • Files created: 3 test files (1 917 lines total)
  • Files modified: 0 production-code files (this is the RED gate ONLY)

Accomplishments

Task 1: tests/background/blob-url-download.test.ts (3 RED)

Pins D-P2-01 (offscreen-minted Blob URL pipeline; closes audit P0-6).

  • Test 1 (wire-format polarity guard): chrome.downloads.download is called with a url that starts with blob: and does NOT start with data:application/zip;base64,. RED today; concrete assertion error: chrome.downloads.download was called with url='data:application/zip;base64,UEsDBAoAAAAAAL1qtFw...' — D-P2-01 forbids data:application/zip;base64, prefix.
  • Test 2 (latency + wire-format at 6 MB scale): A 6 MB archive completes in under 5 000 ms AND emits a blob: URL. The vi.doMock on remuxSegments short-circuits the muxer to inject a synthetic 6 MB Blob. RED today via the wire-format guard (data: URL prefix); GREEN after Plan 02-02. Elapsed ~1 266 ms (well under budget).
  • Test 3 (revoke lifecycle): URL.revokeObjectURL is scheduled with the same URL passed to chrome.downloads.download once chrome.downloads.onChanged reports state.current === 'complete'. RED today; concrete error: chrome.downloads.onChanged._callbacks.length === 0 at probe time (current downloadArchive does not register an onChanged listener).

Commit: 748a81f test(02-01): RED — pin Blob URL download contract (D-P2-01)

Task 2: tests/background/meta-json-urls-schema.test.ts (5 RED)

Pins D-P2-02 (meta.json url→urls migration) + F2 empty-tracker resolution.

  • Test 1 (SessionMetadata type-shape via source-text scan): src/shared/types.ts MUST contain urls: string[] AND MUST NOT contain url: (singular) inside the SessionMetadata interface body. Workaround for vitest typecheck:{enabled:false}. RED today; concrete error: 'urls: string[]' field not present.
  • Test 2 (createArchive meta.json shape): Real createArchive output has Array.isArray(meta.urls) === true AND meta.url === undefined. RED today; concrete error: meta.urls is not an Array. Got: undefined.
  • Tests 3+4+5 (tab-url-tracker module seam): Each test dynamically imports src/background/tab-url-tracker (the planner-suggested module name from Plan 02-03) and expect.fails with a precise GREEN-gate contract message when the module doesn't exist. RED today; module missing.
    • Test 3 pins dedup + first-seen-first order: ['A', 'B', 'A'] → ['A', 'B'].
    • Test 4 pins URL filter: include https + chrome-extension://; exclude chrome:// + about:.
    • Test 5 pins F2 empty-tracker contract: no observations → getTabUrlsSeen() === [] (NOT undefined, NOT [], NOT null).

Commit: 9e45d33 test(02-01): RED — pin meta.json urls[] schema + dedup/filter + empty-tracker (D-P2-02 + F2)

Task 3: tests/build/strict-meta-json-validation.test.ts (3 RED + 5 GREEN regression guards)

Pins D-P2-03 strict 8-field meta.json schema validation.

  • Test 1 (RED): exactly 8 fields. Current shape has 7. Concrete error: meta.json has 7 fields; D-P2-03 requires exactly 8. Current keys: [timestamp, url, userAgent, extensionVersion, videoBufferSeconds, logDurationMinutes, totalEvents].
  • Test 2 (GREEN regression guard): ISO-8601 Z-suffix timestamp. Current new Date().toISOString() already matches; catches future locale-formatter regressions.
  • Test 3 (RED): urls Array of valid URLs (empty permitted per F2). Concrete error: meta.urls is not an Array. Got: undefined.
  • Test 4 (GREEN regression guard): semver extensionVersion. Current manifest.version '1.0.0' matches; catches build-hash regressions.
  • Test 5 (GREEN regression guard): non-negative integer totalEvents. Current sum-of-event-counts matches; catches negative/float regressions.
  • Test 6 (GREEN regression guard): videoBufferSeconds === 30 literal. CON-video-window pin.
  • Test 7 (GREEN regression guard): logDurationMinutes === 10 literal. CON-event-log-window pin.
  • Test 8 (RED): no extra fields beyond EXPECTED_KEYS. Concrete error: meta.json contains extra (unexpected) fields: ["url"]. EXPECTED_KEYS = [timestamp, urls, userAgent, extensionVersion, videoBufferSeconds, logDurationMinutes, totalEvents, schemaVersion].

Commit: 94e0346 test(02-01): RED — pin strict 8-field meta.json schema validation (D-P2-03)

Test count delta

  • Before: 155 GREEN (baseline including sw-bundle-import.test.ts after npm run build).
  • After: 159 GREEN + 11 RED (11 new RED from this plan + the 5 Task-3 GREEN-today regression guards count as +4 net new GREEN since Test 5 was added per F2; see "Plan vs reality" below).
  • Net delta: +11 RED, +4 GREEN tests (was 155, now 170 vitest-discovered + 1 ffprobe-flaky out-of-scope; see Deferred Issues).

Vitest reporter final state:

Test Files  4 failed | 27 passed (31)
      Tests  12 failed | 159 passed (171)

(12 failed = 3 [Task 1] + 5 [Task 2] + 3 [Task 3 RED] + 1 [pre-existing ffprobe-flaky webm-remux test — out of scope; see Deferred Issues].)

Tier-1 grep gate

tests/background/no-test-hooks-in-prod-bundle.test.ts continues to pass with 13/13 GREEN (FORBIDDEN_HOOK_STRINGS at the existing inventory; this plan touches no production code).

Plan-vs-reality reconciliation

Plan claim: "ALL 8 [strict-validation] tests MUST fail under current HEAD"

Reality: 3 of 8 are RED-today (Tests 1, 3, 8 — the migration-driven assertions). The other 5 are GREEN-today regression guards (timestamp regex, semver, totalEvents, videoBufferSeconds, logDurationMinutes — all of which already match the current 7-field shape).

Resolution: Honored the plan's spirit (8 strict-validation tests pinning the post-migration schema) while being honest about the test states. The 5 GREEN-today tests are not test pollution — they're regression guards that prevent Plan 02-03 from accidentally regressing the unchanged fields when adding urls + schemaVersion.

Plan suggestion: "Use jsdom env (default in vitest.config.ts)"

Reality: vitest.config.ts explicitly sets environment: 'node' and jsdom is not in devDependencies. Node 24 ships URL.createObjectURL + URL.revokeObjectURL + performance + Blob as globals (verified at land time), so jsdom is not required. FileReader is the only missing global; a minimal polyfill inline in each test file delegates to Blob.arrayBuffer().

Plan suggestion: "Test 1 fails at the TypeScript-compile layer"

Reality: vitest.config.ts has typecheck: { enabled: false }. A tsc-failure-based pin would be a no-op. Replaced with a source-text regex scan of src/shared/types.ts that asserts both presence of urls: string[] AND absence of url: inside the SessionMetadata interface body.

Planner-resolved tensions (carried forward into Plans 02-02 + 02-03)

  • D-P2-03 "non-empty urls[]" vs CONTEXT.md <specifics> permissive empty-array clause: resolved in favor of the permissive clause (F2 — empty IS PERMITTED for whole-desktop-no-tab sessions). Test 3 of Task 3 enforces the relaxed contract.
  • 8th field name schemaVersion: TENTATIVE PLANNER PICK to mark the D-P2-02 url→urls breaking-change cutover. EXPECTED_KEYS constant in tests/build/strict-meta-json-validation.test.ts pins this choice; Plan 02-03's implementer COMMITS to adding schemaVersion: '2' as a constant in src/background/index.ts. If a stronger argument for a different 8th-field name surfaces, this test file is the canonical place to amend.
  • tab-url-tracker module name src/background/tab-url-tracker.ts: PLANNER-SUGGESTED. Plan 02-03's implementer commits to this name; if renaming is desired, all three Task 2 dynamic-import strings need to update lockstep.
  • _resetForTesting / _observeForTesting ergonomic hooks on tab-url-tracker: OPTIONAL contract the test file documents. Plan 02-03 implementer SHOULD expose these for Tests 3+4+5 ergonomic wiring; if absent, the tests need to wire chrome.tabs.onUpdated callbacks directly.

Forward links

  • Plan 02-02 (Wave 1 GREEN): flips Task 1's 3 RED tests by minting the Blob URL in the offscreen document via URL.createObjectURL, transferring it to the SW via a new port-bridge message, and registering the chrome.downloads.onChanged listener for URL.revokeObjectURL lifecycle.
  • Plan 02-03 (Wave 1 GREEN): flips Task 2's 5 RED tests + Task 3's 3 RED tests by (a) amending src/shared/types.ts to swap url: string for urls: string[], (b) implementing src/background/tab-url-tracker.ts with getTabUrlsSeen() fed by chrome.tabs.onUpdated + chrome.tabs.onActivated listeners (DEC-011 Amendment 1 tabs permission), (c) amending createArchive in src/background/index.ts to call snapshotOpenTabs() + getTabUrlsSeen() and write urls + schemaVersion: '2' to meta.json (removing the old url: field).
  • Plan 02-04 (Wave 2 UAT extensions): harness A24+ assertions read the GREEN-flipped meta.json. A28 (added per F1) pins REQ-archive-layout strict zip-layout (5 entries exact).

Deferred Issues

Pre-existing flaky test in tests/background/webm-remux.test.ts

The ffprobe -count_frames reports between 905 and 912 frames inclusive test (Plan 01-08 Task 2) fails when run as part of the full-suite parallel runner but passes when run in isolation. The failure surface is intermittent; the input fixture (raw-3ebml-concat.webm) and remuxSegments output are deterministic. Suspected cause: ffprobe spawnSync timing interaction with parallel vitest workers, or transient tmpdir contention.

  • Out of scope for this plan per Plan 02-01 §verification: this plan touches no production code and no Phase 1 test file.
  • Scope boundary: not directly caused by current plan changes (verified by running the test in isolation post-commit).
  • Recommended owner: Phase 5 hardening OR a Phase 2 closure debug session if the flake recurs during Plans 02-02 / 02-03 execution. If the flake blocks Phase 2 plan-checker or operator empirical UAT, escalate to a /gsd-debug session.

Self-Check: PASSED

Files created (verified via stat at SUMMARY commit time)

  • FOUND: tests/background/blob-url-download.test.ts (~625 lines)
  • FOUND: tests/background/meta-json-urls-schema.test.ts (~671 lines)
  • FOUND: tests/build/strict-meta-json-validation.test.ts (~621 lines)

Commits exist (verified via git log)

  • FOUND: 748a81f test(02-01): RED — pin Blob URL download contract (D-P2-01)
  • FOUND: 9e45d33 test(02-01): RED — pin meta.json urls[] schema + dedup/filter + empty-tracker (D-P2-02 + F2)
  • FOUND: 94e0346 test(02-01): RED — pin strict 8-field meta.json schema validation (D-P2-03)

Plan §verification gates

  • Task 1: npx vitest run tests/background/blob-url-download.test.ts → 3 failed (3) ✓
  • Task 2: npx vitest run tests/background/meta-json-urls-schema.test.ts → 5 failed (5) ✓
  • Task 3: npx vitest run tests/build/strict-meta-json-validation.test.ts → 3 failed | 5 passed (8) ✓ (5 GREEN = regression guards per plan-vs-reality reconciliation above)
  • Skip discipline: grep -cE "\.skip\(|\.skip$|\.skip[, ]" returns 0 for all three files ✓
  • Tier-1 grep gate: npx vitest run tests/background/no-test-hooks-in-prod-bundle.test.ts → 13/13 GREEN preserved ✓

Success criteria reconciliation

  1. Three RED test files exist with concrete failure messages under current HEAD (3 + 5 + 3 = 11 RED).
  2. meta-json-urls-schema.test.ts Test 1 fails (source-text scan; the planner's tsc-compile-failure path was a no-op due to typecheck:{enabled:false}, but the source-text scan is a stronger structural pin that survives the disabled-typecheck config).
  3. Tier-1 grep gate (FORBIDDEN_HOOK_STRINGS inventory) remains GREEN (13/13).
  4. UAT harness baseline UNCHANGED (test-only changes; this plan touches no production-source code).
  5. Commits land with test(02-01): RED — ... prefix matching Plan 01-02 / 01-13 RED-test precedent.
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