host-with-namespace.xhtml | Explore in Territory

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xhtml="http://www.w3.org/1999/xhtml" lang="en" >
<head>
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
</head>
<body>
  <div id="default-namespace"></div>
  <xhtml:div id="explicit-namespace"></xhtml:div>

  <script>
    <![CDATA[
      test(function() {
        const defaultNamespaceHost = document.getElementById('default-namespace');
        defaultNamespaceHost.attachShadow({mode: 'open'});
        assert_not_equals(defaultNamespaceHost.shadowRoot, null, "attachShadow should work on node with default namespace");
      }, 'attachShadow with a default-namespaced element');

      test(function() {
        const explicitNamespaceHost = document.getElementById('explicit-namespace');
        explicitNamespaceHost.attachShadow({mode: 'open'});
        assert_not_equals(explicitNamespaceHost.shadowRoot, null, "attachShadow should work on node with explicit namespace");
      }, 'Test attachShadow with a namespaced element');
    ]]>
  </script>
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/shadow-dom/host-with-namespace.xhtml