fetch-audio-tainting.https.html

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This WPT test may be referenced by the following Test IDs:
- /service-workers/service-worker/fetch-audio-tainting.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/common/get-host-info.sub.js"></script>

<script src="resources/test-helpers.sub.js?pipe=sub"></script>

<script>

promise_test(async (t) => {

    const SCOPE = 'resources/empty.html';

    const SCRIPT = 'resources/fetch-rewrite-worker.js';

    const host_info = get_host_info();

    const REMOTE_ORIGIN = host_info.HTTPS_REMOTE_ORIGIN;

    const reg = await service_worker_unregister_and_register(t, SCRIPT, SCOPE);

    await wait_for_state(t, reg.installing, 'activated');

    const frame = await with_iframe(SCOPE);

    const doc = frame.contentDocument;

    const win = frame.contentWindow;

    const context = new win.AudioContext();

    try {

      context.suspend();

      const audio = doc.createElement('audio');

      audio.autoplay = true;

      const source = context.createMediaElementSource(audio);

      const spn = context.createScriptProcessor(16384, 1, 1);

      source.connect(spn).connect(context.destination);

      const url = `${REMOTE_ORIGIN}/webaudio/resources/sin_440Hz_-6dBFS_1s.wav`;

      audio.src = '/test?url=' + encodeURIComponent(url);

      doc.body.appendChild(audio);

      await new Promise((resolve) => {

        audio.addEventListener('playing', resolve);

});

      await context.resume();

      const event = await new Promise((resolve) => {

        spn.addEventListener('audioprocess', resolve);

});

      const data = event.inputBuffer.getChannelData(0);

      for (const e of data) {

        assert_equals(e, 0);

    } finally {

      context.close();

  }, 'Verify CORS XHR of fetch() in a Service Worker');

</script>