layout/reftests/bugs/1288255.html


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<!DOCTYPE html>
<html lang="en" class="reftest-wait">
<head>
  <meta charset="UTF-8">
  <title>Bug 1288255 - Wrong line breaking due to cached hyphen width</title>
  <style id="font" media="not all">
    @font-face {
      font-family: LongHyphenTest;
      src: url(LongHyphenTest.woff2);
    }
  </style>
  <style>
    #test {
      font: 16px/2 LongHyphenTest;
      width: 14em;
      border: 1px solid blue;
    }
  </style>
</head>
<body onload="load_font()">
  <p>Test passes if there are two lines each has three rectangles:</p>
  <div id="test">
    <span>XXX XXX</span> XXX X&shy;XX XXX XXX
  </div>
  <script>
    function load_font() {
      document.getElementById("font").media = "";
      document.fonts.load("16px LongHyphenTest").then(() => {
        document.documentElement.className = "";
      });
    }
  </script>
</body>
</html>