michael@0: // Deleting String.prototype.iterator makes for-of stop working on strings.
michael@0: 
michael@0: load(libdir + "asserts.js");
michael@0: load(libdir + "iteration.js");
michael@0: 
michael@0: delete String.prototype[std_iterator];
michael@0: assertThrowsInstanceOf(function () { for (var v of "abc") ; }, TypeError);
michael@0: assertThrowsInstanceOf(function () { for (var v of new String("abc")) ; }, TypeError);