anchor.diff:            var groupTestPassedCount = testsInGroup.filter(
                 (TestCase t) => t.result == 'pass').length;
             groupPassFail = groupTotalTestCount == groupTestPassedCount;
  +          var passFailClass = "unittest-group-status unittest-group-"
  +              "status-${groupPassFail ? 'pass' : 'fail'}";
   
             te.elements.add(new Element.html("""
               <div>
  
positive.code:               </div>
              </div>"""));
  
            var grp = te.query('#${safeGroup}');
            if (grp != null){
              grp.on.click.add((_){
                var row = document.query('.unittest-row-${safeGroup}');
  
negative.code:                    class='unittest-group ${safeGroup} test${safeGroup}'>
                  <div ${_isIE ? "style='display:inline-block' ": ""}
                       class='unittest-row-status'>
                    <div class='$passFailClass'></div>
                  </div>
                  <div ${_isIE ? "style='display:inline-block' ": ""}>
                      ${test_.currentGroup}</div>
  