michael@0: gczeal(4,1);
michael@0: var iterable = {persistedProp: 17};
michael@0: iterable.__iterator__ = function() {
michael@0:     yield ["foo", 2];
michael@0:     yield ["bar", 3];
michael@0: };
michael@0: var it = Iterator(iterable);
michael@0: assertEq(it.next().toString(), "foo,2");
michael@0: assertEq(it.next().toString(), "bar,3");