;
      }, "Padding properties on mrow (rtl)");

      test(function() {
          assert_true(MathMLFeatureDetection.has_mspace());
          var s = measureSpaceAround("mrow-padding-shorthand")
          assert_approx_equals(s.left, 20, epsilon, "left padding");
          assert_approx_equals(s.right, 20, epsilon, "right padding");
          assert_approx_equals(s.top, 20, epsilon, "top padding");
          assert_approx_equals(s.bottom, 20, epsilon, "bottom padding");
          var b = document.getElemen