dom/nodes/DocumentFragment-constructor.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>DocumentFragment constructor</title>
<link rel="help" href="https://dom.spec.whatwg.org/#dom-documentfragment-documentfragment">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
"use strict";

test(() => {
  const fragment = new DocumentFragment();
  assert_equals(fragment.ownerDocument, document);
}, "Sets the owner document to the current global object associated document");

test(() => {
  const fragment = new DocumentFragment();
  const text = document.createTextNode("");
  fragment.appendChild(text);
  assert_equals(fragment.firstChild, text);
}, "Create a valid document DocumentFragment");
</script>