dSerialize(fontFamilyValue) {
    var target = document.getElementById('target');
    target.setAttribute("style", `font-family: ${fontFamilyValue}`);
    return window.getComputedStyle(target).getPropertyValue('font-family');
  }
  test(function() {
    kGenericFontFamilyKeywords.forEach(keyword => {
      assert_equals(SetFontFamilyAndSerialize(keyword), keyword);
    });
  }, "Serialization of <generic-family>");

  test(function() {
    kGenericFontFamilyKeywords.forEach(keyword => {
      var quoted_ke