moveBefore-shadow-root.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /dom/nodes/moveBefore/tentative/moveBefore-shadow-root.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

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

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

<body>

  <div id=shadowTarget></div>

</body>

<script>

test(() => {

  shadowTarget.attachShadow({mode: 'open'});

  const child1 = document.createElement('p');

  child1.textContent = 'Child1';

  const child2 = document.createElement('p');

  child2.textContent = 'Child2';

  shadowTarget.shadowRoot.append(child1, child2);

  shadowTarget.shadowRoot.moveBefore(child2, child1);

  assert_equals(shadowTarget.shadowRoot.firstChild, child2, "Original lastChild is now firstChild");

  assert_equals(shadowTarget.shadowRoot.lastChild, child1, "Original firstChild is now lastChild");

}, "moveBefore() is allowed in ShadowRoots (i.e., connected DocumentFragments)");

</script>