top-level-is-scope.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-nesting/top-level-is-scope.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>Top-level & is treated like :scope</title>

<link rel="author" title="Steinar H. Gunderson" href="mailto:sesse@chromium.org">

<link rel="help" href="https://drafts.csswg.org/css-nesting-1/">

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

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

<div id="p">

  <div class="match" id="level1">

    <div class="match" id="level2"></div>

  </div>

</div>

<script>

  test(() => {

    let matched = [];

    for (const elem of p.querySelectorAll('& .match')) {

      matched.push(elem.getAttribute('id'));

    assert_array_equals(matched, ['level1', 'level2']);

  }, '& as direct ancestor');

  test(() => {

    let matched = [];

    for (const elem of p.querySelectorAll('& > .match')) {

      matched.push(elem.getAttribute('id'));

    assert_array_equals(matched, ['level1']);

  }, '& matches scoped element only, not everything');

</script>