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Add browser microphone end-to-end stress test
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‎.github/workflows/browser-mic-e2e.yml‎

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name: browser-mic-e2e
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on:
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push:
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branches:
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- stress/browser-mic-e2e-2026-08-15
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permissions:
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contents: read
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jobs:
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chromium-fake-microphone:
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runs-on: ubuntu-24.04
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timeout-minutes: 25
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env:
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VITE_SOFTWARE_REVISION: 447f98dd511201367d6051704e10607d645735dd
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steps:
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- uses: actions/checkout@v7
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- uses: actions/setup-node@v6
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with:
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node-version: 22
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- run: corepack enable
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- run: pnpm install --frozen-lockfile
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- run: pnpm build
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- name: Generate deterministic fake microphone impact WAV
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shell: bash
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run: |
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python - <<'PY'
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import math, random, struct, wave
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rate = 48000
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seconds = 5.0
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onset = 0.85
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rng = random.Random(20260815)
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modes = [(440.0, 0.55, 1.20), (997.0, 0.31, 0.70), (2413.0, 0.17, 0.38)]
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path = '/tmp/everything-rings-fake-impact.wav'
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with wave.open(path, 'wb') as out:
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out.setnchannels(1)
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out.setsampwidth(2)
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out.setframerate(rate)
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frames = bytearray()
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for i in range(round(rate * seconds)):
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t = i / rate
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value = (rng.random() * 2 - 1) * 0.00025
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if t >= onset:
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dt = t - onset
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value += sum(a * math.exp(-dt / tau) * math.sin(2 * math.pi * f * dt) for f, a, tau in modes)
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value = max(-0.92, min(0.92, value))
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frames += struct.pack('<h', round(value * 32767))
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out.writeframes(frames)
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print(path)
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PY
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- name: Install isolated Playwright Chromium
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shell: bash
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run: |
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set -euo pipefail
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mkdir -p /tmp/everything-rings-mic-e2e
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cd /tmp/everything-rings-mic-e2e
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npm init -y >/dev/null
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npm install --save-exact playwright@1.55.0
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npx playwright install --with-deps chromium
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- name: Exercise microphone to exported evidence end to end
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shell: bash
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run: |
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set -euo pipefail
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pnpm --filter @everything-rings/web exec vite preview --host 127.0.0.1 --port 4173 --strictPort >/tmp/everything-rings-mic-e2e-vite.log 2>&1 &
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server_pid=$!
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trap 'kill "$server_pid" 2>/dev/null || true' EXIT
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for _ in $(seq 1 40); do
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if curl --fail --silent http://127.0.0.1:4173 >/dev/null; then break; fi
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sleep 0.25
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done
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cat >/tmp/everything-rings-mic-e2e/e2e.mjs <<'NODE'
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import fs from 'node:fs';
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import { chromium } from 'playwright';
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const revision = '447f98dd511201367d6051704e10607d645735dd';
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const origin = 'http://127.0.0.1:4173';
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const browser = await chromium.launch({
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headless: true,
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args: [
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'--use-fake-ui-for-media-stream',
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'--use-fake-device-for-media-stream',
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'--use-file-for-fake-audio-capture=/tmp/everything-rings-fake-impact.wav',
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'--autoplay-policy=no-user-gesture-required',
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],
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});
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const context = await browser.newContext({ acceptDownloads: true });
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await context.grantPermissions(['microphone'], { origin });
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const page = await context.newPage();
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const pageErrors = [];
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page.on('pageerror', (error) => pageErrors.push(String(error)));
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await page.goto(`${origin}/?lab=1`, { waitUntil: 'networkidle' });
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const body = await page.locator('body').innerText();
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if (!body.includes(`software revision ${revision}`)) throw new Error('lab does not expose frozen revision');
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await page.getByLabel('specimen ID').fill('fake-mic-positive-control');
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await page.getByLabel('object').fill('synthetic modal impact');
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await page.getByLabel('material').selectOption('metal');
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await page.getByLabel('microphone distance').locator('input').fill('20');
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await page.getByLabel('striker').fill('deterministic fake microphone waveform');
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await page.getByLabel('strike location').fill('synthetic onset');
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await page.getByLabel('support condition').fill('CI positive control');
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const arm = page.getByRole('button', { name: 'ARM MICROPHONE' });
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if (await arm.isDisabled()) throw new Error('ARM MICROPHONE unexpectedly disabled');
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await arm.click();
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await page.locator('.status-success').waitFor({ state: 'visible', timeout: 20000 });
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const modeRows = page.locator('[aria-label="Estimated acoustic modes"] .mode-row:not(.mode-head)');
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const modeCount = await modeRows.count();
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if (modeCount < 3) throw new Error(`expected at least 3 modes after microphone analysis, got ${modeCount}`);
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const modeText = await modeRows.allInnerTexts();
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const frequencies = modeText.map((text) => Number.parseFloat(text));
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for (const expected of [440, 997, 2413]) {
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if (!frequencies.some((actual) => Number.isFinite(actual) && Math.abs(actual - expected) <= Math.max(5, expected * 0.01))) {
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throw new Error(`expected resonance near ${expected} Hz; observed ${JSON.stringify(frequencies)}`);
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}
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}
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const downloadPromise = page.waitForEvent('download');
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await page.getByRole('button', { name: 'EXPORT EVIDENCE' }).click();
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const download = await downloadPromise;
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const exportPath = '/tmp/everything-rings-mic-e2e/evidence.json';
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await download.saveAs(exportPath);
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const evidence = JSON.parse(fs.readFileSync(exportPath, 'utf8'));
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if (evidence.schemaVersion !== 5 || evidence.evidenceContractVersion !== 'validation-evidence-5') {
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throw new Error('exported evidence has wrong schema contract');
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}
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if (evidence.softwareRevision !== revision) throw new Error(`wrong exported revision ${evidence.softwareRevision}`);
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if (evidence.attemptCount !== 1 || evidence.attempts?.length !== 1) throw new Error('expected one retained qualified attempt');
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if (evidence.attempts[0]?.analysis?.status !== 'success') throw new Error('exported microphone attempt is not analytically successful');
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if (evidence.rawMicrophoneSamplesIncluded !== false) throw new Error('raw PCM invariant violated');
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if (pageErrors.length > 0) throw new Error(`uncaught page errors: ${pageErrors.join(' | ')}`);
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console.log(JSON.stringify({ modeCount, frequencies, quality: evidence.attempts[0].quality }, null, 2));
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await browser.close();
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NODE
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cd /tmp/everything-rings-mic-e2e
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node e2e.mjs | tee /tmp/everything-rings-mic-e2e-result.json
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- uses: actions/upload-artifact@v4
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if: always()
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with:
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name: browser-mic-e2e-report
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path: |
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/tmp/everything-rings-mic-e2e-result.json
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/tmp/everything-rings-mic-e2e/evidence.json
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if-no-files-found: warn

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