ShadowRoot-createElement.tentative.html

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This test has a WPT meta file that expects 4 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /custom-elements/scoped-registry/ShadowRoot-createElement.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Tests ShadowRoot.createElement APIs work with scoped custom element registries</title>

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

<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>

class TestAutonomous extends HTMLElement {};

class TestCustomizedBuiltIn extends HTMLParagraphElement {};

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 => {

  const registry = new CustomElementRegistry;

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

  const shadow = attachShadowForTest(t, registry);

  assert_true(shadow.createElement('test-element') instanceof TestAutonomous);

  // Verify that it doesn't pollute other tree scopes.

  const shadow2 = attachShadowForTest(t);

  assert_false(shadow2.createElement('test-element') instanceof TestAutonomous);

  const shadow3 = attachShadowForTest(t, new CustomElementRegistry);

  assert_false(shadow3.createElement('test-element') instanceof TestAutonomous);

  assert_false(document.createElement('test-element') instanceof TestAutonomous);

}, 'ShadowRoot.createElement() for autonomous custom element');

test(t => {

  const html = 'http://www.w3.org/1999/xhtml';

  const registry = new CustomElementRegistry;

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

  const shadow = attachShadowForTest(t, registry);

  assert_true(shadow.createElementNS(html, 'test-element') instanceof TestAutonomous);

  // Verify that it doesn't pollute other tree scopes.

  const shadow2 = attachShadowForTest(t);

  assert_false(shadow2.createElementNS(html, 'test-element') instanceof TestAutonomous);

  const shadow3 = attachShadowForTest(t, new CustomElementRegistry);

  assert_false(shadow3.createElementNS(html, 'test-element') instanceof TestAutonomous);

  assert_false(document.createElementNS(html, 'test-element') instanceof TestAutonomous);

}, 'ShadowRoot.createElementNS() for autonomous custom element');

test(t => {

  const registry = new CustomElementRegistry;

  registry.define('test-element', TestCustomizedBuiltIn, {extends: 'p'});

  const shadow = attachShadowForTest(t, registry);

  assert_true(shadow.createElement('p', {is: 'test-element'}) instanceof TestCustomizedBuiltIn);

  // Verify that it doesn't pollute other tree scopes.

  const shadow2 = attachShadowForTest(t);

  assert_false(shadow2.createElement('p', {is: 'test-element'}) instanceof TestCustomizedBuiltIn);

  const shadow3 = attachShadowForTest(t, new CustomElementRegistry);

  assert_false(shadow3.createElement('p', {is: 'test-element'}) instanceof TestCustomizedBuiltIn);

  assert_false(document.createElement('p', {is: 'test-element'}) instanceof TestCustomizedBuiltIn);

}, 'ShadowRoot.createElement() for customized built-in element');

test(t => {

  const html = 'http://www.w3.org/1999/xhtml';

  const registry = new CustomElementRegistry;

  registry.define('test-element', TestCustomizedBuiltIn, {extends: 'p'});

  const shadow = attachShadowForTest(t, registry);

  assert_true(shadow.createElementNS(html, 'p', {is: 'test-element'}) instanceof TestCustomizedBuiltIn);

  // Verify that it doesn't pollute other tree scopes.

  const shadow2 = attachShadowForTest(t);

  assert_false(shadow2.createElementNS(html, 'p', {is: 'test-element'}) instanceof TestCustomizedBuiltIn);

  const shadow3 = attachShadowForTest(t, new CustomElementRegistry);

  assert_false(shadow3.createElementNS(html, 'p', {is: 'test-element'}) instanceof TestCustomizedBuiltIn);

  assert_false(document.createElementNS(html, 'p', {is: 'test-element'}) instanceof TestCustomizedBuiltIn);

}, 'ShadowRoot.createElementNS() for customized built-in element');

</script>

</body>