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

<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Highlight API Test: Vertical Writing Mode</title>
<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
<link rel="match" href="custom-highlight-painting-vertical-writing-mode-001-ref.html">
<link rel="stylesheet" href="../../css-pseudo/support/highlights.css">
<meta name="assert" value="::highlight overlay is painted correctly when the highlighted text is in a vertical writing mode">
<meta name="fuzzy" content="0-255;0-20">
<style>
  #verticalRL {
      writing-mode: vertical-rl;
  }
  #verticalLR {
      writing-mode: vertical-lr;
  }
  #sidewaysRL {
      writing-mode: sideways-rl;
  }
  #sidewaysLR {
      writing-mode: sideways-lr;
  }
  ::highlight(example-highlight) {
    background-color: yellow;
    color: blue;
  }
</style>
<body>
<div id="verticalRL" class="highlight_reftest"><span>One </span><span>two </span><span>three…</span></div>
<div id="verticalLR" class="highlight_reftest"><span>One </span><span>two </span><span>three…</span></div>
<div id="sidewaysRL" class="highlight_reftest"><span>One </span><span>two </span><span>three…</span></div>
<div id="sidewaysLR" class="highlight_reftest"><span>One </span><span>two </span><span>three…</span></div>
<script>
  let verticalRLRange = new Range();
  verticalRLRange.setStart(verticalRL, 0);
  verticalRLRange.setEnd(verticalRL, 2);
  let verticalLRRange = new Range();
  verticalLRRange.setStart(verticalLR, 0);
  verticalLRRange.setEnd(verticalLR, 2);
  let sidewaysRLRange = new Range();
  sidewaysRLRange.setStart(sidewaysRL, 0);
  sidewaysRLRange.setEnd(sidewaysRL, 2);
  let sidewaysLRRange = new Range();
  sidewaysLRRange.setStart(sidewaysLR, 0);
  sidewaysLRRange.setEnd(sidewaysLR, 2);

  CSS.highlights.set("example-highlight",
    new Highlight(verticalRLRange, verticalLRRange, sidewaysLRRange, sidewaysRLRange));
</script>