constructor-context-dies-cross-context-call.html

<!DOCTYPE html>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<script src="../fast/dom/custom/testutils.js"></script>
<body>
<script>
'use strict';

// TODO(dominicc): Port fork() etc. to work with testharness, then
// remove these.
function debug() {}
function finishJSTest() {}

(() => {

if (fork()) {
  // The controlling parent frame.
  let t = async_test('context is destroyed; call across context');
  let watcher = new EventWatcher(t, window, 'message');
  watcher.wait_for('message').then(t.step_func((event) => {
    assert_equals(event.data, 'PASS destroyed context');
    return watcher.wait_for('message');
  })).then(t.step_func((event) => {
    assert_equals(event.data, 'PASS child done');
    assert_throws_js(ChildError, () => new window.C());
    t.done();
  }));
} else {
  // The child frame.
  class C extends HTMLElement {}
  window.customElements.define('a-a', C);
  window.parent.C = C;
  window.parent.ChildError = Error;
  destroyContext();
  done();
}

})();
</script>

chromium/third_party/blink/web_tests/custom-elements/constructor-context-dies-cross-context-call.html