testing/web-platform/tests/html/semantics/embedded-content/the-embed-element/embed-change-src.html

   1 <!DOCTYPE html>
   2 <html class="reftest-wait">
   3 <meta charset="utf-8">
   4 <link rel="author" title="Joey Arhar" href="mailto:jarhar@chromium.org">
   5 <link rel="help" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-embed-element">
   6 <link rel="help" href="http://crbug.com/1035330">
   7
   8 <script src="/resources/testharness.js"></script>
   9 <script src="/resources/testharnessreport.js"></script>
  10
  11 <body>
  12 <script>
  13 promise_test(async () => {
  14   const embed = document.createElement('embed');
  15   let loadPromise = new Promise(resolve => embed.onload = resolve);
  16   embed.src = '/media/white.mp4';
  17   document.body.appendChild(embed);
  18
  19   await loadPromise;
  20
  21   loadPromise = new Promise(resolve => embed.onload = resolve);
  22   embed.src = '/media/white.webm';
  23
  24   await loadPromise;
  25 }, 'Verifies that embed elements reload with new content when the src attribute is changed.');
  26 </script>