| // Basic for-of test with Proxy whose iterator method is a generator. |
| |
| var arr = ['a', 'b', 'c', 'd']; |
| var proxy = Proxy.create({ |
| getPropertyDescriptor: function (name) { |
| if (name == 'iterator') { |
| return { |
| configurable: false, |
| enumerable: false, |
| writeable: false, |
| value: function () { |
| for (var i = 0; i < arr.length; i++) |
| yield arr[i]; |
| } |
| }; |
| } |
| |
| // Otherwise, inherit the property from arr. |
| for (var obj = arr; obj; obj = Object.getPrototypeOf(obj)) { |
| var desc = Object.getOwnPropertyDescriptor(obj, name); |
| if (desc) |
| return desc; |
| } |
| return undefined; |
| } |
| }); |
| |
| for (var i = 0; i < 2; i++) |
| assertEq([v for (v of proxy)].join(","), "a,b,c,d"); |