ShadowRoot-init-declarative.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/registries/ShadowRoot-init-declarative.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>Scoped Custom Element Registries: declarative shadow root</title>

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

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

<div id="host">

  <template shadowrootmode="open" shadowrootcustomelementregistry>

    <custom-element></custom-element>

    <div></div>

  </template>

</div>

<script>

test(() => {

  const customElement = host.shadowRoot.firstElementChild;

  assert_equals(customElement.customElementRegistry, null);

  customElement.attachShadow({

    mode: "open"

});

  assert_equals(customElement.shadowRoot.customElementRegistry, null);

}, "Custom element inside 'shadowrootcustomelementregistry' declarative shadow root");

test(() => {

  const divElement = host.shadowRoot.lastElementChild;

  assert_equals(divElement.customElementRegistry, null);

  divElement.attachShadow({

    mode: "open"

});

  assert_equals(divElement.shadowRoot.customElementRegistry, null);

}, "Built-in element inside 'shadowrootcustomelementregistry' declarative shadow root");

</script>