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 // Test that each yield* loop just checks "done", and "value" is only

 // fetched once at the end.

 load(libdir + 'iteration.js');

 var log = "";

 function Iter(val, count) {

     function next() {

         return {

             get done() { log += "d"; return count-- == 0; },

             get value() { log += "v"; return val; }

         }

     }

     this[std_iterator] = function() { return this; };

     this.next = next;

 }

 for (var x of new Iter(42, 5))

     assertEq(x, 42);

 assertEq(log, "dvdvdvdvdvd");