resource-selection-candidate-remove-onerror.html

Enable keyboard shortcuts

This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/semantics/embedded-content/media-elements/loading-the-media-resource/resource-selection-candidate-remove-onerror.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>removing the candidate source, onerror</title>

<link rel=help href="https://html.spec.whatwg.org/#concept-media-load-algorithm">

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

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

<div id=log></div>

<script>

function createSource(src) {

  const source = document.createElement('source');

  source.src = src;

  return source;

promise_test(async t => {

  const v = document.createElement('video');

  const s = createSource('resources/delayed-broken-video.py');

  v.appendChild(s); // invokes resource selection

  const s2 = createSource('resources/delayed-broken-video.py?second');

  v.appendChild(s2);

  s.onerror = t.unreached_func('error fired on removed source');

  const s2Error = new Promise(resolve => s2.addEventListener('error', resolve));

  await t.step_wait(() => v.currentSrc == s.src, 'candidate selected', 3000, 5);

  assert_equals(v.networkState, v.NETWORK_LOADING, 'networkState');

  v.removeChild(s);

  await s2Error;

});

</script>