Node-append-form-and-script-from-fragment.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /dom/nodes/insertion-removing-steps/Node-append-form-and-script-from-fragment.tentative.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>Node.appendChild: inserting script and associated form</title>

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

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

<button id="someButton" form="someForm"></button>

<script>

test(() => {

    const script = document.createElement("script");

    const form = document.createElement("form");

    form.id = "someForm";

    const fragment = new DocumentFragment();

    script.textContent = `

        window.buttonAssociatedForm = document.querySelector("#someButton").form;

`;

    fragment.append(script, form);

    document.body.append(fragment);

    assert_equals(window.buttonAssociatedForm, form);

}, "When adding a script+form in a fragment and the form matches an associated element, " +

    "the script that checks whether the button is associated to the form should run after " +

    "inserting the form");

</script>