resource-selection-invoke-in-sync-event.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-invoke-in-sync-event.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>await a stable state and sync event handlers</title>

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

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

<div id=log></div>

<video></video>

<script>

var v;

var t = async_test(function(t) {

  v = document.querySelector('video');

  var a = document.createElement('a');

  a.onclick = t.step_func(function() {

    v.setAttribute('src', '#'); // invokes media load which invokes resource selection

    assert_equals(v.networkState, v.NETWORK_NO_SOURCE, 'networkState in onclick handler');

});

  a.click(); // sync fires click, so sets src

  // now we should still await a stable state because the script hasn't

  // finished, the event handler has just returned

  assert_equals(v.networkState, v.NETWORK_NO_SOURCE, 'networkState after click()');

  v.removeAttribute('src');

});

t.step(function() {

  // now the sync section of resource selection should have run and should

  // have found no src="" or <source> thus networkState being set to NETWORK_EMPTY.

  // if the sync section was run when onclick returned, then networkState

  // would be either NETWORK_LOADING or NETWORK_NO_SOURCE.

  assert_equals(v.networkState, v.NETWORK_EMPTY, 'networkState after src removed');

  t.done();

});

</script>