The Tor Browser: js/src/tests/js1_5/extensions/scope-001.js@129ffea94266

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 //-----------------------------------------------------------------------------

     7 var BUGNUMBER = '53268';

     8 var status = 'Testing scope after changing obj.__proto__';

     9 var expect= '';

    10 var actual = '';

    11 var obj = {};

    12 const five = 5;

    15 //-----------------------------------------------------------------------------

    16 test();

    17 //-----------------------------------------------------------------------------

    20 function test()

    21 {

    22   enterFunc ("test");

    23   printBugNumber(BUGNUMBER);

    24   printStatus (status);

    27   status= 'Step 1:  setting obj.__proto__ = global object';

    28   obj.__proto__ = this;

    30   actual = obj.five;

    31   expect=5;

    32   reportCompare (expect, actual, status);

    34   obj.five=1;

    35   actual = obj.five;

    36   expect=5;

    37   reportCompare (expect, actual, status);

    41   status= 'Step 2:  setting obj.__proto__ = null';

    42   obj.__proto__ = null;

    44   actual = obj.five;

    45   expect=undefined;

    46   reportCompare (expect, actual, status);

    48   obj.five=2;

    49   actual = obj.five;

    50   expect=2;

    51   reportCompare (expect, actual, status);

    55   status= 'Step 3:  setting obj.__proto__  to global object again';

    56   obj.__proto__ = this;

    58   actual = obj.five;

    59   expect=2;  //<--- (FROM STEP 2 ABOVE)

    60   reportCompare (expect, actual, status);

    62   obj.five=3;

    63   actual = obj.five;

    64   expect=3;

    65   reportCompare (expect, actual, status);

    69   status= 'Step 4:  setting obj.__proto__   to  null again';

    70   obj.__proto__ = null;

    72   actual = obj.five;

    73   expect=3;  //<--- (FROM STEP 3 ABOVE)

    74   reportCompare (expect, actual, status);

    76   obj.five=4;

    77   actual = obj.five;

    78   expect=4;

    79   reportCompare (expect, actual, status);

    82   exitFunc ("test");

    83 }

The Tor Browser / file revision

js/src/tests/js1_5/extensions/scope-001.js@129ffea94266

js/src/tests/js1_5/extensions/scope-001.js