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