;
  window.addEventListener("load", runTests);
  function runTests()
  {
      Array.from(document.getElementsByClassName("TestContainer")).forEach(container => {
          const tag = container.id;
          test(function() {
              assert_true(MathMLFeatureDetection[`has_${tag}`](), `${tag} is supported`);
              const epsilon = 1;
              const math = container.getElementsByTagName("math");
              compareLayout(math[0], math[1], epsilon);
          }, `Legacy mstyle attributes 