resource-selection-remove-source.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:
- /html/semantics/embedded-content/media-elements/loading-the-media-resource/resource-selection-remove-source.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>Changes to networkState when inserting and removing a &lt;source></title>

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

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

<div id=log></div>

<script>

var v;

var t = async_test(function(t) {

  v = document.createElement('video');

  assert_equals(v.networkState, v.NETWORK_EMPTY, 'networkState when creating the element');

  v.appendChild(document.createElement('source')); // runs resource selection algorithm

  assert_equals(v.networkState, v.NETWORK_NO_SOURCE, 'networkState when inserting a source element');

  v.removeChild(v.firstChild);

  assert_equals(v.networkState, v.NETWORK_NO_SOURCE, 'networkState after removing the source element');

});

</script>

<!-- now resource selection will continue its sync section (the </script> tag below provides a stable state) -->

<!-- will find neither src nor source, so sets networkState to NETWORK_EMPTY -->

<script>

t.step(function() {

  assert_equals(v.networkState, v.NETWORK_EMPTY, 'networkState after letting the sync section of resource selection run');

  t.done();

});

</script>