<!DOCTYPE html>
<html>
  <head>
    <title>Exceptions for synchronous custom element creation</title>
  </head>
  <body>
    <script>
      if (testRunner)
        testRunner.dumpAsText();

      class ObjectCustomElement extends HTMLElement {
        constructor()
        {
          return {foo: 'bar'};
        }
      };
      customElements.define('object-custom-element', ObjectCustomElement);
      document.createElement('object-custom-element');

      class ElementWithAttribute extends HTMLElement {
        constructor()
        {
          super();
          this.setAttribute('id', 'foo');
        }
      };
      customElements.define('element-with-attribute', ElementWithAttribute);
      document.createElement('element-with-attribute');

      class ElementWithChildText extends HTMLElement {
        constructor()
        {
          super();
          this.appendChild(document.createTextNode('hello'));
        }
      };
      customElements.define('element-with-child-text', ElementWithChildText);
      document.createElement('element-with-child-text');

      class ElementWithParent extends HTMLElement {
        constructor()
        {
          super();
          document.createElement('div').appendChild(this);
        }
      };
      customElements.define('element-with-parent', ElementWithParent);
      document.createElement('element-with-parent');

      var otherDoc = document.implementation.createDocument('http://www.w3.org/1999/xhtml', 'html', null);
      class ElementWithAdoptCall extends HTMLElement {
      constructor()
        {
          super();
          otherDoc.adoptNode(this);
        }
      };
      customElements.define('element-with-adopt-call', ElementWithAdoptCall);
      document.createElement('element-with-adopt-call');

      class DivCustomElement extends HTMLElement {
        constructor()
        {
          super();
          return document.createElement('div');
        }
      };
      customElements.define('div-custom-element', DivCustomElement);
      document.createElement('div-custom-element');
    </script>
  </body>
</html>