constructor-call.tentative.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /custom-elements/scoped-registry/constructor-call.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta name="author" title="Xiaocheng Hu" href="mailto:xiaochengh@chromium.org">

<meta name="assert" content="Direct calls of custom element constructor use the global registry only">

<link rel="help" href="https://wicg.github.io/webcomponents/proposals/Scoped-Custom-Element-Registries">

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

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

<body>

<script>

function attachShadowForTest(t, registry) {

  const host = document.createElement('div');

  const shadow = host.attachShadow({mode: 'open', registry});

  document.body.appendChild(host);

  t.add_cleanup(() => host.remove());

  return shadow;

test(t => {

  class TestElement extends HTMLElement {};

  let registry = new CustomElementRegistry()

  registry.define('test-element', TestElement);

  let shadow = attachShadowForTest(t, registry);

  assert_throws_js(TypeError, () => new TestElement);

}, 'Calling custom element constructor directly without global registration should fail');

test(t => {

  class TestElement extends HTMLElement {};

  window.customElements.define('global-test-element', TestElement);

  let registry = new CustomElementRegistry()

  registry.define('shadow-test-element', TestElement);

  let shadow = attachShadowForTest(t, registry);

  let element = new TestElement;

  assert_equals(element.localName, 'global-test-element');

}, 'Calling custom element constructor directly uses global registration only');

</script>

</body>