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

118 lines
3.4 KiB
JavaScript

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* pschwartau@netscape.com
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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* decision by deleting the provisions above and replace them with the notice
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* ***** END LICENSE BLOCK ***** */
var gTestfile = 'scope-001.js';
//-----------------------------------------------------------------------------
var BUGNUMBER = '53268';
var status = 'Testing scope after changing obj.__proto__';
var expect= '';
var actual = '';
var obj = {};
const five = 5;
//-----------------------------------------------------------------------------
test();
//-----------------------------------------------------------------------------
function test()
{
enterFunc ("test");
printBugNumber(BUGNUMBER);
printStatus (status);
status= 'Step 1: setting obj.__proto__ = global object';
obj.__proto__ = this;
actual = obj.five;
expect=5;
reportCompare (expect, actual, status);
obj.five=1;
actual = obj.five;
expect=5;
reportCompare (expect, actual, status);
status= 'Step 2: setting obj.__proto__ = null';
obj.__proto__ = null;
actual = obj.five;
expect=undefined;
reportCompare (expect, actual, status);
obj.five=2;
actual = obj.five;
expect=2;
reportCompare (expect, actual, status);
status= 'Step 3: setting obj.__proto__ to global object again';
obj.__proto__ = this;
actual = obj.five;
expect=2; //<--- (FROM STEP 2 ABOVE)
reportCompare (expect, actual, status);
obj.five=3;
actual = obj.five;
expect=3;
reportCompare (expect, actual, status);
status= 'Step 4: setting obj.__proto__ to null again';
obj.__proto__ = null;
actual = obj.five;
expect=3; //<--- (FROM STEP 3 ABOVE)
reportCompare (expect, actual, status);
obj.five=4;
actual = obj.five;
expect=4;
reportCompare (expect, actual, status);
exitFunc ("test");
}