michael@0: // Test that each yield* loop just checks "done", and "value" is only
michael@0: // fetched once at the end.
michael@0: 
michael@0: load(libdir + 'iteration.js');
michael@0: 
michael@0: var log = "";
michael@0: 
michael@0: function Iter(val, count) {
michael@0:     function next() {
michael@0:         return {
michael@0:             get done() { log += "d"; return count-- == 0; },
michael@0:             get value() { log += "v"; return val; }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     this[std_iterator] = function() { return this; };
michael@0:     this.next = next;
michael@0: }
michael@0: 
michael@0: for (var x of new Iter(42, 5))
michael@0:     assertEq(x, 42);
michael@0: 
michael@0: assertEq(log, "dvdvdvdvdvd");