custom-highlight-painting-text-decoration-dynamic-001-ref.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Highlight API Test: Reference ::highlight dynamic change text-decoration</title>
<style>
  ::highlight(example) {
    text-decoration: solid underline green;
  }
</style>
<p>The test passes if it line below has a green underline.</p>
<div id="target">target</div>
<script>
  let range = new Range();
  range.setStart(target, 0);
  range.setEnd(target, 1);
  CSS.highlights.set(`example`, new Highlight(range));
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-highlight-api/painting/custom-highlight-painting-text-decoration-dynamic-001-ref.html