<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Default properties on &lt;semantics&gt; and &lt;maction&gt;</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#semantics-and-presentation">
<link rel="help" href="https://w3c.github.io/mathml-core/#enlivening-expressions">
<link rel="help" href="https://w3c.github.io/mathml-core/#user-agent-stylesheet">
<meta name="assert" content="Test that only the first children of semantics/maction are displayed.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
  <div id="log"></div>
  <div>
    <math>
      <semantics>
        <mn>1</mn>
        <mn>2</mn>
        <mn>3</mn>
        <mn>4</mn>
        <mn>5</mn>
      </semantics>
      <maction>
        <mn>1</mn>
        <mn>2</mn>
        <mn>3</mn>
        <mn>4</mn>
        <mn>5</mn>
      </maction>
    </math>
  </div>

  <script>
    ["semantics", "maction"].forEach(name => {
      let element = document.getElementsByTagName(name)[0];
      test(() => {
        let child = element.firstElementChild;
        assert_not_equals(window.getComputedStyle(child).display, "none", `Child ${child.innerText} does not have display: none`);
        for (child = child.nextElementSibling; child; child = child.nextElementSibling) {
          assert_equals(window.getComputedStyle(child).display, "none", `Child ${child.innerText} has display: none`);
        }
      }, `Display value of children of the <${name}> element`);
    });
  </script>
</body>
</html>
