32 lines
1.0 KiB
JavaScript
32 lines
1.0 KiB
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 --no-stress-opt
|
||
|
|
|
||
|
|
// This tests the interaction between the MapIterator protector and SetIterator
|
||
|
|
// protector.
|
||
|
|
|
||
|
|
var map = new Map([[1,2], [2,3], [3,4]]);
|
||
|
|
assertTrue(%MapIteratorProtector());
|
||
|
|
|
||
|
|
var set = new Set([1,2,3]);
|
||
|
|
assertTrue(%SetIteratorProtector());
|
||
|
|
|
||
|
|
// This changes %SetIteratorPrototype%. No more tests should be run after this
|
||
|
|
// in the same instance.
|
||
|
|
var iterator = set.keys();
|
||
|
|
iterator.__proto__[Symbol.iterator] = () => ({next: () => ({done: true})});
|
||
|
|
|
||
|
|
assertFalse(%MapIteratorProtector());
|
||
|
|
assertEquals([[1,2], [2,3], [3,4]], [...map]);
|
||
|
|
assertEquals([[1,2], [2,3], [3,4]], [...map.entries()]);
|
||
|
|
assertEquals([1,2,3], [...map.keys()]);
|
||
|
|
assertEquals([2,3,4], [...map.values()]);
|
||
|
|
|
||
|
|
assertFalse(%SetIteratorProtector());
|
||
|
|
assertEquals([], [...set.entries()]);
|
||
|
|
assertEquals([1,2,3], [...set]);
|
||
|
|
assertEquals([], [...set.keys()]);
|
||
|
|
assertEquals([], [...set.values()]);
|