File: request-picture-in-picture.html

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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/speculation-rules/prerender/resources/utils.js"></script>
<video id="target"
       onloadstart="loadstart()" src="/media/test.ogv"></video>
<script>

assert_true(document.prerendering);

const params = new URLSearchParams(location.search);
const uid = params.get('uid');

async function requestPictureInPicture() {
  const bc = new PrerenderChannel('prerender-channel', uid);

  try {
    await target.requestPictureInPicture();
    bc.postMessage('unexpected success');
  } catch (err) {
    if (err.name == 'InvalidStateError')
      bc.postMessage('Metadata for the video element are not loaded yet');
    else
      bc.postMessage(err.message);
  } finally {
    bc.close();
  }
}

function loadstart() {
  // Wait some time to give the test a chance to load the data and fail the test.
  setTimeout(() => { requestPictureInPicture(); }, 100);
}
</script>