<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Fraction parameters</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#fractions-mfrac">
<meta name="assert" content="Element mfrac correctly uses the fraction parameters from the MATH table.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mathml/support/feature-detection.js"></script>
<script src="/mathml/support/fonts.js"></script>
<style>
  math, mspace {
    font-size: 10px;
  }
  @font-face {
    font-family: axisheight7000-rulethickness1000;
    src: url("/fonts/math/fraction-axisheight7000-rulethickness1000.woff");
  }
  @font-face {
    font-family: denominatordisplaystylegapmin5000-rulethickness1000;
    src: url("/fonts/math/fraction-denominatordisplaystylegapmin5000-rulethickness1000.woff");
  }
  @font-face {
    font-family: denominatordisplaystyleshiftdown6000-axisheight1000-rulethickness1000;
    src: url("/fonts/math/fraction-denominatordisplaystyleshiftdown6000-axisheight1000-rulethickness1000.woff");
  }
  @font-face {
    font-family: denominatorgapmin4000-rulethickness1000;
    src: url("/fonts/math/fraction-denominatorgapmin4000-rulethickness1000.woff");
  }
  @font-face {
    font-family: denominatorshiftdown3000-axisheight1000-rulethickness1000;
    src: url("/fonts/math/fraction-denominatorshiftdown3000-axisheight1000-rulethickness1000.woff");
  }
  @font-face {
    font-family: numeratordisplaystylegapmin8000-rulethickness1000;
    src: url("/fonts/math/fraction-numeratordisplaystylegapmin8000-rulethickness1000.woff");
  }
  @font-face {
    font-family: numeratordisplaystyleshiftup2000-axisheight1000-rulethickness1000;
    src: url("/fonts/math/fraction-numeratordisplaystyleshiftup2000-axisheight1000-rulethickness1000.woff");
  }
  @font-face {
    font-family: numeratorgapmin9000-rulethickness1000;
    src: url("/fonts/math/fraction-numeratorgapmin9000-rulethickness1000.woff");
  }
  @font-face {
    font-family: numeratorshiftup11000-axisheight1000-rulethickness1000;
    src: url("/fonts/math/fraction-numeratorshiftup11000-axisheight1000-rulethickness1000.woff");
  }
  @font-face {
    font-family: rulethickness10000;
    src: url("/fonts/math/fraction-rulethickness10000.woff");
  }
</style>
<script>
  var emToPx = 10 / 1000; // font-size: 10px, font.em = 1000
  var epsilon = 1;

  function getBox(aId) {
    return document.getElementById(aId).getBoundingClientRect();
  }

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

  function runTests() {
    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 7000 * emToPx;
      var v2 = 1000 * emToPx;
      assert_approx_equals(getBox("ref0001").top - getBox("num0001").bottom,
                           v1 + v2 / 2, epsilon, "mfrac: axis height");
    }, "AxisHeight");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 5000 * emToPx;
      assert_approx_equals(getBox("den0002").top - getBox("ref0002").bottom,
                           v1, epsilon, "mfrac: denominator gap");
    }, "DenominatorDisplayStyleGapMin");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 6000 * emToPx;
      assert_approx_equals(getBox("den0003").top - getBox("ref0003").bottom,
                           v1, epsilon, "mfrac: denominator shift");
    }, "DenominatorDisplayStyleShiftDown");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 5000 * emToPx;
      assert_approx_equals(getBox("den0002b").top - getBox("ref0002b").bottom,
                           v1, epsilon, "mfrac: denominator gap");
    }, "DenominatorDisplayStyleGapMin Displaystyle");
    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());
      var v1 = 6000 * emToPx;
      assert_approx_equals(getBox("den0003b").top - getBox("ref0003b").bottom,
                           v1, epsilon, "mfrac: denominator shift");
    }, "DenominatorDisplayStyleShiftDown Displaystyle");
    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());
      var v1 = 5000 * emToPx;
      assert_approx_equals(getBox("den0002c").top - getBox("ref0002c").bottom,
                           v1, epsilon, "mfrac: denominator gap");
    }, "DenominatorDisplayStyleGapMin Displaystyle on fraction");
    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());
      var v1 = 6000 * emToPx;
      assert_approx_equals(getBox("den0003c").top - getBox("ref0003c").bottom,
                           v1, epsilon, "mfrac: denominator shift");
    }, "DenominatorDisplayStyleShiftDown Displaystyle on fraction");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());
      var v1 = 4000 * emToPx;
      assert_approx_equals(getBox("den0004").top - getBox("ref0004").bottom,
                           v1, epsilon, "mfrac: denominator gap");
    }, "DenominatorGapMin");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 3000 * emToPx;
      assert_approx_equals(getBox("den0005").top - getBox("ref0005").bottom,
                           v1, epsilon, "mfrac: denominator shift");
    }, "DenominatorShiftDown");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());
      var v1 = 4000 * emToPx;
      assert_approx_equals(getBox("den0004b").top - getBox("ref0004b").bottom,
                           v1, epsilon, "mfrac: denominator gap");
    }, "DenominatorGapMin Displaystyle on fraction");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 3000 * emToPx;
      assert_approx_equals(getBox("den0005b").top - getBox("ref0005b").bottom,
                           v1, epsilon, "mfrac: denominator shift");
    }, "DenominatorShiftDown Displaystyle on fraction");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 8000 * emToPx;
      assert_approx_equals(getBox("ref0006").top - getBox("num0006").bottom,
                           v1, epsilon, "mfrac: numerator gap");
    }, "NumeratorDisplayStyleGapMin");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 2000 * emToPx;
      assert_approx_equals(getBox("ref0007").top - getBox("num0007").bottom,
                           v1, epsilon, "mfrac: numerator shift");
    }, "NumeratorDisplayStyleShiftDown");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 8000 * emToPx;
      assert_approx_equals(getBox("ref0006b").top - getBox("num0006b").bottom,
                           v1, epsilon, "mfrac: numerator gap");
    }, "NumeratorDisplayStyleGapMin Displaystyle");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 2000 * emToPx;
      assert_approx_equals(getBox("ref0007b").top - getBox("num0007b").bottom,
                           v1, epsilon, "mfrac: numerator shift");
    }, "NumeratorDisplayStyleShiftDown Displaystyle");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 8000 * emToPx;
      assert_approx_equals(getBox("ref0006c").top - getBox("num0006c").bottom,
                           v1, epsilon, "mfrac: numerator gap");
    }, "NumeratorDisplayStyleGapMin Displaystyle on fraction");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 2000 * emToPx;
      assert_approx_equals(getBox("ref0007c").top - getBox("num0007c").bottom,
                           v1, epsilon, "mfrac: numerator shift");
    }, "NumeratorDisplayStyleShiftDown Displaystyle on fraction");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 9000 * emToPx;
      assert_approx_equals(getBox("ref0008").top - getBox("num0008").bottom,
                           v1, epsilon, "mfrac: numerator gap");
    }, "NumeratorGapMin");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 11000 * emToPx;
      assert_approx_equals(getBox("ref0009").top - getBox("num0009").bottom,
                           v1, epsilon, "mfrac: numerator shift");
    }, "NumeratorShiftDown");

    test(function() {
      assert_true(MathMLFeatureDetection.has_mspace());

      var v1 = 10000 * emToPx;
      assert_approx_equals(getBox("den0010").top - getBox("num0010").bottom,
                           v1, epsilon, "mfrac: rule thickness");
    }, "FractionRuleThickness");

    done();
  }
</script>
</head>
<body>
  <div id="log"></div>
  <p>
    <math style="font-family: axisheight7000-rulethickness1000;">
      <mspace id="ref0001" depth="1em" width="3em" style="background: green"/>
      <mfrac>
        <mspace width="3em" height="1em" id="num0001" style="background: blue"/>
        <mspace width="3em"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math display="block" style="font-family: denominatordisplaystylegapmin5000-rulethickness1000;">
      <mspace id="ref0002" width="3em"
              height=".5em" depth=".5em" style="background: green"/>
      <mfrac>
        <mspace width="3em"/>
        <mspace width="3em" height="1em" id="den0002" style="background: blue"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math display="block" style="font-family: denominatordisplaystyleshiftdown6000-axisheight1000-rulethickness1000;">
      <mspace id="ref0003" width="3em" height="1em" style="background: green"/>
      <mfrac>
        <mspace width="3em"/>
        <mspace width="3em" depth="1em" id="den0003" style="background: blue"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math displaystyle="true" style="font-family: denominatordisplaystylegapmin5000-rulethickness1000;">
      <mspace id="ref0002b" width="3em"
              height=".5em" depth=".5em" style="background: green"/>
      <mfrac>
        <mspace width="3em"/>
        <mspace width="3em" height="1em" id="den0002b" style="background: blue"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math displaystyle="true" style="font-family: denominatordisplaystyleshiftdown6000-axisheight1000-rulethickness1000;">
      <mspace id="ref0003b" width="3em" height="1em" style="background: green"/>
      <mfrac>
        <mspace width="3em"/>
        <mspace width="3em" depth="1em" id="den0003b" style="background: blue"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math style="font-family: denominatordisplaystylegapmin5000-rulethickness1000;">
      <mspace id="ref0002c" width="3em"
              height=".5em" depth=".5em" style="background: green"/>
      <mfrac displaystyle="true">
        <mspace width="3em"/>
        <mspace width="3em" height="1em" id="den0002c" style="background: blue"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math style="font-family: denominatordisplaystyleshiftdown6000-axisheight1000-rulethickness1000;">
      <mspace id="ref0003c" width="3em" height="1em" style="background: green"/>
      <mfrac displaystyle="true">
        <mspace width="3em"/>
        <mspace width="3em" depth="1em" id="den0003c" style="background: blue"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math style="font-family: denominatorgapmin4000-rulethickness1000;">
      <mspace id="ref0004" width="3em"
              height=".5em" depth=".5em" style="background: green"/>
      <mfrac>
        <mspace width="3em"/>
        <mspace width="3em" height="1em" id="den0004" style="background: blue"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math style="font-family: denominatorshiftdown3000-axisheight1000-rulethickness1000;">
      <mspace id="ref0005" width="3em" height="1em" style="background: green"/>
      <mfrac>
        <mspace width="3em"/>
        <mspace width="3em" depth="1em" id="den0005" style="background: blue"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math displaystyle="true" style="font-family: denominatorgapmin4000-rulethickness1000;">
      <mspace id="ref0004b" width="3em"
              height=".5em" depth=".5em" style="background: green"/>
      <mfrac displaystyle="false">
        <mspace width="3em"/>
        <mspace width="3em" height="1em" id="den0004b" style="background: blue"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math displaystyle="true" style="font-family: denominatorshiftdown3000-axisheight1000-rulethickness1000;">
      <mspace id="ref0005b" width="3em" height="1em" style="background: green"/>
      <mfrac displaystyle="false">
        <mspace width="3em"/>
        <mspace width="3em" depth="1em" id="den0005b" style="background: blue"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math display="block" style="font-family: numeratordisplaystylegapmin8000-rulethickness1000;">
      <mspace id="ref0006" width="3em"
              height=".5em" depth=".5em" style="background: green"/>
      <mfrac>
        <mspace width="3em" depth="1em" id="num0006" style="background: blue"/>
        <mspace width="3em"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math display="block" style="font-family: numeratordisplaystyleshiftup2000-axisheight1000-rulethickness1000;">
      <mspace id="ref0007" width="3em"
              depth="1em" style="background: green"/>
      <mfrac>
        <mspace width="3em" height="1em" id="num0007" style="background: blue"/>
        <mspace width="3em"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math displaystyle="true" style="font-family: numeratordisplaystylegapmin8000-rulethickness1000;">
      <mspace id="ref0006b" width="3em"
              height=".5em" depth=".5em" style="background: green"/>
      <mfrac>
        <mspace width="3em" depth="1em" id="num0006b" style="background: blue"/>
        <mspace width="3em"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math displaystyle="true" style="font-family: numeratordisplaystyleshiftup2000-axisheight1000-rulethickness1000;">
      <mspace id="ref0007b" width="3em"
              depth="1em" style="background: green"/>
      <mfrac>
        <mspace width="3em" height="1em" id="num0007b" style="background: blue"/>
        <mspace width="3em"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math style="font-family: numeratordisplaystylegapmin8000-rulethickness1000;">
      <mspace id="ref0006c" width="3em"
              height=".5em" depth=".5em" style="background: green"/>
      <mfrac displaystyle="true">
        <mspace width="3em" depth="1em" id="num0006c" style="background: blue"/>
        <mspace width="3em"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math style="font-family: numeratordisplaystyleshiftup2000-axisheight1000-rulethickness1000;">
      <mspace id="ref0007c" width="3em"
              depth="1em" style="background: green"/>
      <mfrac displaystyle="true">
        <mspace width="3em" height="1em" id="num0007c" style="background: blue"/>
        <mspace width="3em"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math style="font-family: numeratorgapmin9000-rulethickness1000;">
      <mspace id="ref0008" width="3em"
              height=".5em" depth=".5em" style="background: green"/>
      <mfrac>
        <mspace width="3em" depth="1em" id="num0008" style="background: blue"/>
        <mspace width="3em"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math style="font-family: numeratorshiftup11000-axisheight1000-rulethickness1000;">
      <mspace id="ref0009" width="3em"
              depth="1em" style="background: green"/>
      <mfrac>
        <mspace width="3em" height="1em" id="num0009" style="background: blue"/>
        <mspace width="3em"/>
      </mfrac>
    </math>
  </p>
  <hr/>
  <p>
    <math style="font-family: rulethickness10000">
      <mfrac>
        <mspace width="3em" height="1em" id="num0010" style="background: blue"/>
        <mspace width="3em" depth="1em" id="den0010" style="background: green"/>
      </mfrac>
    </math>
  </p>
</body>
</html>
