Testing

The player has 132 tests that run in a real Chromium (Vitest + Playwright). They play actual video files: no fake media, no mocks.

npm run setup   # downloads Chromium, once
npm test        # about 15 seconds

File	Tests	What it checks
component.test.js	37	Attributes, properties, theming, security, translations.
playback.test.js	46	Loading, errors, play and seek, speed, quality, captions, keyboard.
controls.test.js	30	Volume, progress bar, sign-up modal, fullscreen, PiP, auto-hide.
thumbnails.test.js	19	Seek preview, thumbnail sprites, generated thumbnails.

Run just one part with npx vitest run test/controls.test.js or npx vitest run -t "volume".

If you change the player and a test fails, the test name tells you what behaviour changed. If the change was on purpose, update the test.

On GitHub Actions

.github/workflows/test.yml

name: tests
on: [push, pull_request]
jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with: { node-version: 22 }
      - run: npm ci
      - run: npx playwright install --with-deps chromium
      - run: npm test