File: MediaStreamTrack-iframe-transfer.https.html

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<!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({video: true});
  const track = stream.getVideoTracks()[0];
  const iframeLoaded = new Promise((resolve) => {iframe.onload = resolve});

  iframe.src = "support/iframe-MediaStreamTrack-transfer.html";
  document.body.appendChild(iframe);

  await iframeLoaded;

  const nextMessage = new Promise((resolve) => {
    window.onmessage = resolve
  });

  assert_not_equals(track.readyState, "ended");
  iframe.contentWindow.postMessage(track);
  assert_equals(track.readyState, "ended");

  const message = await nextMessage;
  assert_not_equals(message.data.result, 'Failure', 'Failed: ' + message.data.error);
});
</script>