michael@0: // Slowifying an array while it is being iterated does not affect iteration.
michael@0: 
michael@0: var a = [9, 8, 7, 6, 5, 4, 3];
michael@0: var log = '';
michael@0: for (var x of a) {
michael@0:     log += x;
michael@0:     if (x === 6)
michael@0:         a.slow = true;
michael@0: }
michael@0: assertEq(log, "9876543");