The Tor Browser / file revision

 // getprop, self, 8 shapes

 var expected = "0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7,";

 var actual = '';

 function letter(i) {

   return String.fromCharCode(97 + i);

 }

 function f() {

   // Build 8 objects with different shapes and x in different slots.

   var oa = [];

   for (var i = 0; i < 8; ++i) {

     var o = {};

     for (var j = 0; j < 8; ++j) {

       if (j != i) {

 	o[letter(j)] = 1000 + i * 10 + j;

       } else {

 	o.x = i;

       }

     }

     oa[i] = o;

   }

   for (var i = 0; i < 24; ++i) {

     actual += oa[i%8].x + ',';

   }

 }

 f();

 assertEq(actual, expected);