mirror of https://github.com/tc39/test262.git
57 lines
1.5 KiB
JavaScript
57 lines
1.5 KiB
JavaScript
|
// Copyright (C) 2019 Alexey Shvayka. All rights reserved.
|
||
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
||
|
|
|
||
|
|
/*---
|
||
|
|
esid: sec-object.keys
|
||
|
|
description: >
|
||
|
|
Proxy [[OwnPropertyKeys]] trap does not skip non-enumerable keys when validating invariant:
|
||
|
|
* If the target object is not extensible, then the result List must contain all the keys of
|
||
|
|
the own properties of the target object and no other values.
|
||
|
|
info: |
|
||
|
|
Object.keys ( O )
|
||
|
|
|
||
|
|
...
|
||
|
|
2. Let nameList be ? EnumerableOwnPropertyNames(obj, "key").
|
||
|
|
|
||
|
|
EnumerableOwnPropertyNames ( O, kind )
|
||
|
|
|
||
|
|
...
|
||
|
|
2. Let ownKeys be ? O.[[OwnPropertyKeys]]().
|
||
|
|
|
||
|
|
[[OwnPropertyKeys]] ( )
|
||
|
|
|
||
|
|
...
|
||
|
|
11. Let targetKeys be ? target.[[OwnPropertyKeys]]().
|
||
|
|
16. For each element key of targetKeys, do
|
||
|
|
a. Let desc be ? target.[[GetOwnProperty]](key).
|
||
|
|
b. If desc is not undefined and desc.[[Configurable]] is false, then
|
||
|
|
...
|
||
|
|
c. Else,
|
||
|
|
i. Append key as an element of targetConfigurableKeys.
|
||
|
|
...
|
||
|
|
18. Let uncheckedResultKeys be a new List which is a copy of trapResult.
|
||
|
|
...
|
||
|
|
21. For each key that is an element of targetConfigurableKeys, do
|
||
|
|
a. If key is not an element of uncheckedResultKeys, throw a TypeError exception.
|
||
|
|
features: [Proxy]
|
||
|
|
---*/
|
||
|
|
|
||
|
|
var target = {};
|
||
|
|
Object.defineProperty(target, 'prop', {
|
||
|
|
value: 2,
|
||
|
|
writable: true,
|
||
|
|
enumerable: false,
|
||
|
|
configurable: true,
|
||
|
|
});
|
||
|
|
Object.preventExtensions(target);
|
||
|
|
|
||
|
|
var proxy = new Proxy(target, {
|
||
|
|
ownKeys: function() {
|
||
|
|
return [];
|
||
|
|
},
|
||
|
|
});
|
||
|
|
|
||
|
|
assert.throws(TypeError, function() {
|
||
|
|
Object.keys(proxy);
|
||
|
|
});
|