  v, epsilon, "mfrac: numerator shift");
    }, "ToShiftUp");

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

      var v = 9000 * emToPx;
      assert_approx_equals(getBox("ref0007b").top - getBox("num0007b").bottom,
                           v, epsilon, "mfrac: numerator shift");
    }, "ToShiftUp with Displaystyle on fraction");

    done();
  }
</script>
</head>
<body>
  <div id="log"></div>
  <p>
    <math display="block" style="font-family: bottomdisplaystyleshiftdown5