custom-highlight-painting-staticrange-001.html

<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Highlight API Test: Invalid StaticRanges are not painted</title>
<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
<link rel="match" href="custom-highlight-painting-staticrange-001-ref.html">
<meta name="assert" value="StaticRanges that are invalid or collapsed should not be painted when they're in a Highlight">
<style>
  ::highlight(example-highlight) {
    background-color: yellow;
    color: blue;
  }
</style>
<body><span id="first">One </span><span id="second">two </span><span id="third">three…</span>
<script>
  let h = new Highlight();
  h.add(new StaticRange({startContainer: document.body, startOffset: 0, endContainer: document.body, endOffset: 0}));
  h.add(new StaticRange({startContainer: document.body, startOffset: 1, endContainer: document.body, endOffset: 0}));
  h.add(new StaticRange({startContainer: document.body, startOffset: 1, endContainer: document.body, endOffset: 100}));
  h.add(new StaticRange({startContainer: document, startOffset: 0, endContainer: document, endOffset: 1}));
  h.add(new StaticRange({startContainer: document.querySelector("#third").firstChild, startOffset: 1, endContainer: document.querySelector("#first").firstChild, endOffset: 2}));
  CSS.highlights.set("example-highlight", h);
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-highlight-api/painting/custom-highlight-painting-staticrange-001.html