tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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accessor-get-is-undefined-throws.js (938B)

      1 // Copyright (C) 2015 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 es6id: 9.5.8
      5 description: >
      6    [[Get]] (P, Receiver)
      7 
      8    if trap result is not undefined, then proxy must report the same value for a
      9    non-configurable accessor property with an undefined get.
     10 info: |
     11    13. If targetDesc is not undefined, then
     12        b. If IsAccessorDescriptor(targetDesc) and targetDesc.[[Configurable]]
     13        is false and targetDesc.[[Get]] is undefined, then
     14            i. If trapResult is not undefined, throw a TypeError exception.
     15 
     16 features: [Proxy]
     17 ---*/
     18 
     19 var target = {};
     20 var p = new Proxy(target, {
     21  get: function() {
     22    return 2;
     23  }
     24 });
     25 
     26 Object.defineProperty(target, 'attr', {
     27  configurable: false,
     28  get: undefined
     29 });
     30 
     31 assert.throws(TypeError, function() {
     32  p.attr;
     33 });
     34 
     35 assert.throws(TypeError, function() {
     36  p['attr'];
     37 });
     38 
     39 reportCompare(0, 0);