remove-from-shadow-host-and-adopt-into-iframe.html

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This WPT test may be referenced by the following Test IDs:
- /dom/nodes/remove-from-shadow-host-and-adopt-into-iframe.html - WPT Dashboard Interop Dashboard

<!doctype html>

<html class="reftest-wait">

  <head>

    <title>Adopting a shadow host child into an iframe</title>

    <link rel="help" href="https://dom.spec.whatwg.org/#concept-node-adopt">

    <link rel="match" href="remove-from-shadow-host-and-adopt-into-iframe-ref.html">

    <style>

      iframe { border: 0; }

    </style>

    <script src="/common/reftest-wait.js"></script>

    <script>

      onload = () => {

        const root = host.attachShadow({mode:"open"});

        root.innerHTML = "<slot>";

        // force a layout

        host.offsetTop;

        iframe.contentWindow.document.body.style.margin = 0;

        iframe.contentWindow.document.body.appendChild(adopted);

        host.remove();

        takeScreenshot();

    </script>

  </head>

  <body>

    <p>You should see the word PASS below.</p>

    <iframe id="iframe"></iframe>

    <div id="host"><span id="adopted">PASS</span></div>

  </body>

</html>