tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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proxy-undefined-descriptor.js (1247B)

      1 // Copyright (C) 2016 Jordan Harband. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 description: Object.getOwnPropertyDescriptors should filter out undefined OwnPropertyDescriptors
      6 esid: sec-object.getownpropertydescriptors
      7 author: Jordan Harband
      8 features: [Proxy]
      9 includes: [proxyTrapsHelper.js]
     10 ---*/
     11 
     12 var key = "a";
     13 var ownKeys = [key];
     14 var badProxyHandlers = allowProxyTraps({
     15  getOwnPropertyDescriptor: function() {},
     16  ownKeys: function() {
     17    return ownKeys;
     18  }
     19 });
     20 var proxy = new Proxy({}, badProxyHandlers);
     21 
     22 var keys = Reflect.ownKeys(proxy);
     23 assert.notSameValue(keys, ownKeys, 'Object.keys returns a new Array');
     24 assert.sameValue(Array.isArray(keys), true, 'Object.keys returns an Array');
     25 assert.sameValue(keys.length, ownKeys.length, 'keys and ownKeys have the same length');
     26 assert.sameValue(keys[0], ownKeys[0], 'keys and ownKeys have the same contents');
     27 
     28 var descriptor = Object.getOwnPropertyDescriptor(proxy, key);
     29 assert.sameValue(descriptor, undefined, "Descriptor matches result of [[GetOwnPropertyDescriptor]] trap");
     30 
     31 var result = Object.getOwnPropertyDescriptors(proxy);
     32 assert.sameValue(key in result, false, "key is not present in result");
     33 
     34 reportCompare(0, 0);