E2e Test Playwright Video

Playwright E2E test video

Turn Cashu.me's real browser tests into a short, labeled demo while preserving the tests as the source of truth. The bundled renderer records the successful incoming, outgoing, and two-wallet ecash flows, then assembles them into an H.264 MP4 with a title card and a contact sheet for visual review.

Workflow

1. Work from the Cashu.me repository root and read test/e2e/README.md when the suite or prerequisites are unfamiliar.

2. Confirm ffmpeg, ffprobe, Docker Compose, and Playwright Chromium are available. Let the test runner report missing project dependencies normally.

3. Run the bundled renderer:

   node .agents/skills/e2e-test-playwright-video/scripts/render.mjs
   

   This invokes the real mint.spec.ts, melt.spec.ts, and ecash.spec.ts tests with E2E_VIDEO=on. It stops immediately if any test fails, because a polished montage must never disguise a broken wallet operation.

4. Inspect the generated contact sheet. Check that the incoming and outgoing chapters show the wallet UI and that both ecash wallets are visible side by side. If it is malformed, fix the renderer or source test and rerun it.

5. Report the test result, video duration and resolution, and provide the final MP4 using an absolute local file link. Embed the local video when the client supports media rendering.

Reusing recordings

When the current test-results/ already contains a complete video-enabled run, skip Docker and the browser tests:

node .agents/skills/e2e-test-playwright-video/scripts/render.mjs --skip-tests

Use --speed to adjust pacing and --output to choose another repository-local destination:

node .agents/skills/e2e-test-playwright-video/scripts/render.mjs \
  --skip-tests \
  --speed 1.5 \
  --output artifacts/wallet-e2e-fast.mp4

Run the script with --help for the concise option reference.

Output and safety

• The default MP4 is artifacts/wallet-e2e-demo.mp4; its contact sheet sits beside it with -contact-sheet.png appended to the basename.
• Raw Playwright recordings remain below test-results/. The ecash test saves stable sender.webm and receiver.webm copies so the montage cannot swap the two roles accidentally.
• Generated videos and rendering assets are ignored by Git. Do not commit them unless the user explicitly requests a durable media artifact and repository policy permits it.
• Keep normal CI economical: E2E_VIDEO=on is opt-in, while ordinary runs retain recordings only on failure.
• Preserve the suite's hermetic design. Do not replace the local CDK fake rails with public Lightning, Bitcoin, price, Nostr, or mint services just to produce more dramatic footage.

Troubleshooting

• A missing source recording usually means the tests were not run with E2E_VIDEO=on; rerun without --skip-tests.
• A missing sender.webm or receiver.webm means the ecash spec predates the stable video-copy behavior; run the current spec again.
• If the suite fails, preserve Playwright's trace, screenshot, and failure video, report the failing operation, and do not create a success montage from stale clips.
• If FFmpeg cannot encode H.264, report the missing encoder and leave the raw WebM recordings intact rather than silently changing the output contract.