custom-highlight-font-metrics-005.html

<!DOCTYPE html>
<html class="reftest-wait">
<meta charset="UTF-8">
<title>CSS Highlight API Test: </title>
<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
<link rel="help" href="https://drafts.csswg.org/css-pseudo/#highlight-styling">
<link rel="match" href="custom-highlight-font-metrics-005-ref.html">
<meta name="assert" value="dynmamic font size changes with highlights and font relative metrics">
<meta name="fuzzy" content="0-80;0-10">
<script src="/common/reftest-wait.js"></script>
<head>
  <style>
    :root {
      font-size: 16px;
    }
    div {
      margin: 50px;
      font-size: 40px;
    }
    #h2 {
      font-size: 20px;
    }
    ::highlight(highlight1) {
      text-underline-offset: 0.5em;
      text-decoration-line: underline;
      text-decoration-color: green;
      text-decoration-thickness: 0.25rem;
    }
  </style>
</head>
<body>
  <div id="h1">Font relative units with 20px font</div>
  <div id="h2">Font relative units with 20px font</div>
  <script>
    let r1 = new Range();
    r1.setStart(h1, 0);
    r1.setEnd(h1, 1);
    let r2 = new Range();
    r2.setStart(h2, 0);
    r2.setEnd(h2, 1);
    CSS.highlights.set("highlight1", new Highlight(r1, r2));

    requestAnimationFrame(() => {
      h1.style.fontSize = "20px";
      requestAnimationFrame(() => { takeScreenshot() }
    )});
  </script>
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/css/css-highlight-api/painting/custom-highlight-font-metrics-005.html