mirror of
https://github.com/nodejs/node.git
synced 2025-05-15 16:01:52 +00:00
6bd756d7c6
PR-URL: https://github.com/nodejs/node/pull/44741 Fixes: https://github.com/nodejs/node/issues/44650 Fixes: https://github.com/nodejs/node/issues/37472 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
31 lines
920 B
JavaScript
31 lines
920 B
JavaScript
// Copyright 2018 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
// Flags: --allow-natives-syntax
|
|
|
|
// Tests for wrapped strings.
|
|
|
|
var str = new String('ott');
|
|
assertTrue(%StringIteratorProtector());
|
|
assertEquals(['o', 't', 't'], [...str]);
|
|
|
|
function iterator_fn() {
|
|
return {next : () => ({value : undefined, done : true})};
|
|
};
|
|
|
|
str[Symbol.iterator] = iterator_fn;
|
|
// This shouldn't invalidate the protector, because it doesn't support String
|
|
// objects.
|
|
assertTrue(%StringIteratorProtector());
|
|
assertEquals([], [...str]);
|
|
|
|
|
|
var str2 = new String('ott');
|
|
assertEquals(['o', 't', 't'], [...str2]);
|
|
// This changes the String prototype. No more tests should be run after this in
|
|
// the same instance.
|
|
str2.__proto__[Symbol.iterator] = iterator_fn;
|
|
assertFalse(%StringIteratorProtector());
|
|
assertEquals([], [...str2]);
|