MediaStreamTrack-iframe-audio-transfer.https.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /mediacapture-streams/MediaStreamTrack-iframe-audio-transfer.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>MediaStreamTrack transfer to iframe</title>

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

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

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

<script src="/resources/testdriver-vendor.js"></script>

<script>

promise_test(async () => {

  const iframe = document.createElement("iframe");

  await test_driver.bless('getDisplayMedia');

  const stream = await navigator.mediaDevices.getDisplayMedia({audio:true, video: true});

  const track = stream.getAudioTracks()[0];

  const result = new Promise((resolve, reject) => {

    window.onmessage = (e) => {

      if (e.data.result === 'Failure') {

        reject('Failed: ' + e.data.error);

      } else {

        resolve();

};

});

  iframe.addEventListener("load", () => {

    assert_not_equals(track.readyState, "ended");

    iframe.contentWindow.postMessage(track);

    assert_equals(track.readyState, "ended");

});

  iframe.src = "support/iframe-MediaStreamTrack-transfer.html";

  document.body.appendChild(iframe);

  return result;

});

</script>