Range-intersectsNode-shadow.html

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This WPT test may be referenced by the following Test IDs:
- /dom/ranges/Range-intersectsNode-shadow.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>Range.intersectsNode with Shadow DOM</title>

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

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

<div id="host"></div>

<script>

test(() => {

  const host = document.getElementById("host");

  host.attachShadow({ mode: "open" }).innerHTML = `<span>ABC</span>`;

  const range = document.createRange();

  range.selectNode(document.body);

  assert_true(range.intersectsNode(host), "Should intersect host");

  assert_false(range.intersectsNode(host.shadowRoot), "Should not intersect shadow root");

  assert_false(range.intersectsNode(host.shadowRoot.firstElementChild), "Should not intersect shadow span");

}, "Range.intersectsNode() doesn't return true for shadow children in other trees");

</script>