tor-browser

The Tor Browser
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nonconfigurable-descriptors-set-value-with-define-property.js (854B)

      1 // Copyright (C) 2017 Caio Lima. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 description: Mapped arguments property descriptor change with non-configurable property
      6 info: |
      7    Mapping keep working when property is set to non-configurable and its
      8    value is changed using [[DefineOwnProperty]].
      9 flags: [noStrict]
     10 esid: sec-arguments-exotic-objects-defineownproperty-p-desc
     11 includes: [propertyHelper.js]
     12 ---*/
     13 
     14 function setArgumentValueWithDefineOwnProperty(a) {
     15  Object.defineProperty(arguments, "0", {configurable: false});
     16 
     17  Object.defineProperty(arguments, "0", {value: 2});
     18 
     19  assert.sameValue(a, 2);
     20 
     21  verifyProperty(arguments, "0", {
     22    value: 2,
     23    writable: true,
     24    enumerable: true,
     25    configurable: false,
     26  });
     27 }
     28 setArgumentValueWithDefineOwnProperty(1);
     29 
     30 
     31 reportCompare(0, 0);