tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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observable-operations.js (1303B)

      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 perform observable operations in the correct order
      6 esid: sec-object.getownpropertydescriptors
      7 author: Jordan Harband
      8 features: [Proxy]
      9 includes: [proxyTrapsHelper.js]
     10 ---*/
     11 
     12 var log = "";
     13 var object = {
     14  a: 0,
     15  b: 0,
     16  c: 0
     17 };
     18 var handler = allowProxyTraps({
     19  getOwnPropertyDescriptor: function(target, propertyKey) {
     20    assert.sameValue(target, object, "getOwnPropertyDescriptor");
     21    log += "|getOwnPropertyDescriptor:" + propertyKey;
     22    return Object.getOwnPropertyDescriptor(target, propertyKey);
     23  },
     24  ownKeys: function(target) {
     25    assert.sameValue(target, object, "ownKeys");
     26    log += "|ownKeys";
     27    return Object.getOwnPropertyNames(target);
     28  }
     29 });
     30 var check = allowProxyTraps({
     31  get: function(target, propertyKey, receiver) {
     32    assert(propertyKey in target, "handler check: " + propertyKey);
     33    return target[propertyKey];
     34  }
     35 });
     36 var proxy = new Proxy(object, new Proxy(handler, check));
     37 var result = Object.getOwnPropertyDescriptors(proxy);
     38 assert.sameValue(log, "|ownKeys|getOwnPropertyDescriptor:a|getOwnPropertyDescriptor:b|getOwnPropertyDescriptor:c", 'log');
     39 
     40 reportCompare(0, 0);