<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>writing mode</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#layout-algorithms">
<meta name="assert" content="Verify CSS writing mode (writing-mode and directionproperties) for mrow.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mathml/support/feature-detection.js"></script>
<script src="/mathml/support/layout-comparison.js"></script>
<script>
  var epsilon = 1;

  setup({ explicit_done: true });
  window.addEventListener("load", runTests);

  function runTests() {
      var reference = document.getElementById("horizontal-tb_ltr");

      ["horizontal-tb_rtl"].forEach(id => {
           var element = document.getElementById(id);

           test(function() {
               var style = window.getComputedStyle(element);
               var writingMode = id.split("_");
               assert_equals(style.getPropertyValue("writing-mode"),
                             writingMode[0], "writing-mode");
               assert_equals(style.getPropertyValue("direction"),
                             writingMode[1], "direction");
           }, `Inheritance of CSS writing-mode and direction (id='${id}')`);

           test(function() {
              assert_true(MathMLFeatureDetection.has_mspace());
              compareLayout(element, reference, epsilon);
           }, `Layout of mrow (id='${id}')`);
      });
      done();
  }
</script>
</head>
<body>
  <div id="log"></div>
  <p>
    <math>
      <mrow id="horizontal-tb_ltr">
        <mspace style="background: blue"
                width="20px" height="30px" depth="40px"></mspace>
        <mspace style="background: black"
                width="50px" depth="60px"></mspace>
        <mspace style="background: yellow"
                width="70px" height="80px"></mspace>
      </mrow>
    </math>
  </p>
  <p>
    <math style="direction: rtl;">
      <mrow id="horizontal-tb_rtl">
        <mspace style="background: blue"
                width="20px" height="30px" depth="40px"></mspace>
        <mspace style="background: black"
                width="50px" depth="60px"></mspace>
        <mspace style="background: yellow"
                width="70px" height="80px"></mspace>
      </mrow>
    </math>
  </p>
</body>
</html>
