css/css-ruby/ruby-text-combine-upright-002a.html

<!DOCTYPE html>
<!-- `reftest-wait` is a reftest harness signal that delays comparison until ready.
     See https://web-platform-tests.org/writing-tests/reftests.html#controlling-when-comparison-occurs -->
<html class="reftest-wait">
<head>
  <meta charset="UTF-8">
  <title>CSS Test: Ruby with text-combine-upright in annotation</title>
  <link rel="author" title="Xidorn Quan" href="mailto:csswg@upsuper.org">
  <link rel="help" href="https://drafts.csswg.org/css-ruby-1/#ruby-align-property">
  <link rel="match" href="ruby-text-combine-upright-002-ref.html">
  <script src="/common/reftest-wait.js"></script>
  <link rel="stylesheet" href="/fonts/ahem.css">
  <style>
    .test {
      display: none;
      font: 52px Ahem;
      writing-mode: vertical-rl;
    }
  </style>
</head>
<body>
  <p>Test passes if the two rectangles are vertically middle aligned.</p>
  <div class="test" id="target">
    <ruby><rb>XXXX</rb><rt style="text-combine-upright: all">X</rt></ruby>
  </div>
  <script>
    // Avoid fallback-font first layout for deterministic reftest snapshots.
    Promise.all([
      document.fonts.load('52px Ahem'),
      document.fonts.ready,
    ]).then(() => {
      const target = document.getElementById('target');
      target.style.display = 'block';
      target.getBoundingClientRect();
      requestAnimationFrame(() => {
        takeScreenshot();
      });
    });
  </script>
</body>
</html>