mirror of https://github.com/tc39/test262.git
30 lines
986 B
JavaScript
30 lines
986 B
JavaScript
// Copyright 2016 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
|
|
|
|
// Overwriting the constructor of an instance updates the protector
|
|
|
|
let x = [];
|
|
|
|
assertEquals(Array, x.map(()=>{}).constructor);
|
|
assertEquals(Array, x.filter(()=>{}).constructor);
|
|
assertEquals(Array, x.slice().constructor);
|
|
assertEquals(Array, x.splice().constructor);
|
|
assertEquals(Array, x.concat([1]).constructor);
|
|
assertEquals(1, x.concat([1])[0]);
|
|
|
|
class MyArray extends Array { }
|
|
|
|
Object.prototype.constructor = MyArray;
|
|
delete Array.prototype.constructor;
|
|
assertFalse(%ArraySpeciesProtector());
|
|
|
|
assertEquals(MyArray, x.map(()=>{}).constructor);
|
|
assertEquals(MyArray, x.filter(()=>{}).constructor);
|
|
assertEquals(MyArray, x.slice().constructor);
|
|
assertEquals(MyArray, x.splice().constructor);
|
|
assertEquals(MyArray, x.concat([1]).constructor);
|
|
assertEquals(1, x.concat([1])[0]);
|