michael@0: // Breaking out of a for-of loop over a generator-iterator does not close the iterator.
michael@0: 
michael@0: load(libdir + "iteration.js");
michael@0: 
michael@0: function range(n) {
michael@0:     for (var i = 0; i < n; i++)
michael@0:         yield i;
michael@0: }
michael@0: 
michael@0: var r = range(10);
michael@0: var s = '';
michael@0: for (var x of r) {
michael@0:     s += x;
michael@0:     if (x == 4)
michael@0:         break;
michael@0: }
michael@0: s += '/';
michael@0: for (var y of r)
michael@0:     s += y;
michael@0: assertEq(s, '01234/56789');