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 var obj = {firstAttr: 'value', secondAttr: 'another value', thirdAttr: 'the last value'};

 (function() {

     for (var i = 0; i < 64; ++i) {

         var name;

         switch (~~(i / 4) % 3) {

             case 0: name = 'firstAttr'; break;

             case 1: name = 'secondAttr'; break;

             case 2: name = 'thirdAttr'; break;

         }

         var result = obj[name];

         switch (name) {

           case 'firstAttr': assertEq(result, 'value'); break;

           case 'secondAttr': assertEq(result, 'another value'); break;

           case 'thirdAttr': assertEq(result, 'the last value'); break;

         }

     }

 })();

 /* Rotate lookup between three ids. */