Files
human-experience-filter-art/simulator/e2e
BenStullsBets 4b1d3afe7b fix(sim): cancel in-flight volume fades so audio isn't silenced after landing
Operator: audio turned off sometimes after landing on a new altitude. Root cause:
fadeVolume started a setInterval ramp that was never cancelled. When restAudio faded
the idle element to 0 and — within FADE_MS — that same element became the newly-landed
ACTIVE scale (assignElements reuses an element per soundtrack url), the stale fade-to-0
kept running and dragged the now-active element back to silence. Fix: cancelFade()
supersedes any in-flight fade when a new fade starts (fadeVolume) or a direct volume
is set (ensurePlaying). E2E proves a new fade supersedes a stale one (fails without
the fix).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-27 17:07:52 -07:00
..

Simulator E2E (Playwright)

Browser end-to-end tests for the Human Experience Filter simulator. The §9 pipeline requires an E2E browser tier for any UI surface; this is that tier.

What it covers

tests/altitude-lock.spec.ts drives the real simulator and asserts the altitude-morph behavior:

  • Zooming to a new altitude plays the morph that matches the clip it lands on (forward zoom-in, and .rev zoom-out).
  • After landing, the clip is locked — it does not change while parked (no secondary swap, no re-roll).

The played morph paths are read from window.__hefMorphs (a diagnostic array populated by advance() in static/app.js), which is reliable even when a morph is served from the in-memory blob cache. The locked clip is read from the Dev-Mode #scale-name readout.

Running

Prerequisites: the project Python venv on PATH (the Playwright webServer boots uvicorn simulator.app:app from the repo root), Node, and the Chromium browser.

# from this directory (simulator/e2e)
npm install
npx playwright install chromium
npm test

playwright.config.ts starts uvicorn on port 8099 automatically (reuseExistingServer locally) and points the tests at it.