<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>No spacing in elements</title>
<meta name="assert" content="Spacing is not added around operators when an element does not use mrow layout. However, when the element is embellished, spacing of the core mo is added around it.">
<link rel="help" href="https://w3c.github.io/mathml-core/#embellished-operators">
<link rel="help" href="https://w3c.github.io/mathml-core/#fractions-mfrac">
<link rel="help" href="https://w3c.github.io/mathml-core/#horizontally-group-sub-expressions-mrow">
<link rel="help" href="https://w3c.github.io/mathml-core/#operator-fence-separator-or-accent-mo">
<link rel="help" href="https://w3c.github.io/mathml-core/#prescripts-and-tensor-indices-mmultiscripts">
<link rel="help" href="https://w3c.github.io/mathml-core/#radicals-msqrt-mroot">
<link rel="help" href="https://w3c.github.io/mathml-core/#subscripts-and-superscripts-msub-msup-msubsup">
<link rel="help" href="https://w3c.github.io/mathml-core/#underscripts-and-overscripts-munder-mover-munderover">
<script src="/mathml/support/feature-detection.js"></script>
<script src="/mathml/support/fonts.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<script type="text/javascript">
  setup({ explicit_done: true });
  window.addEventListener("load", () => { loadAllFonts().then(runTests); });
  function runTests()
  {
      Array.from(document.getElementsByClassName("testedElement")).forEach((e) => {
          test(function() {
              assert_true(MathMLFeatureDetection.has_operator_spacing());
              let box = e.getBoundingClientRect();
              let spacing = 100;
              assert_less_than_equal(box.width, spacing);
          }, `Spacing inside <${e.tagName}>.`);

          test(function() {
              assert_true(MathMLFeatureDetection.has_operator_spacing());
              let box = e.parentNode.getBoundingClientRect();
              let spacing = 100;
              if (e.classList.contains("embellished"))
                  assert_greater_than_equal(box.width, spacing * 2);
              else
                  assert_less_than_equal(box.width, spacing);
          }, `Spacing around <${e.tagName}>.`);
      });
      done();
  }
</script>
<style>
  .testedElement {
      background: lightgreen;
  }
  math {
      background: lightblue;
  }
  math, math * {
      font: 25px/1 Ahem;
  }
</style>
</head>
<body>
  <div id="log"></div>
  <p>
    <math>
      <mfrac class="testedElement embellished">
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
      </mfrac>
    </math>
  </p>
  <p>
    <math>
      <msub class="testedElement embellished">
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
      </msub>
    </math>
  </p>
  <p>
    <math>
      <msup class="testedElement embellished">
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
      </msup>
    </math>
  </p>
  <p>
    <math>
      <msubsup class="testedElement embellished">
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
      </msubsup>
    </math>
  </p>
  <p>
    <math>
      <mmultiscripts class="testedElement embellished">
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
        <mprescripts/>
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
      </mmultiscripts>
    </math>
  </p>
  <p>
    <math>
      <munder class="testedElement embellished">
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
      </munder>
    </math>
  </p>
  <p>
    <math>
      <mover class="testedElement embellished">
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
      </mover>
    </math>
  </p>
  <p>
    <math>
      <munderover class="testedElement embellished">
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
        <mo lspace="100px" rspace="100px">X</mo>
      </munderover>
    </math>
  </p>
  <p>
    <math>
      <mroot class="testedElement">
        <mtext>X</mtext>
        <mo lspace="100px" rspace="100px">X</mo>
      </mroot>
    </math>
  </p>
</body>
</html>
