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/* -*- 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):
* brendan@mozilla.org, 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
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* Date: 07 May 2001
*
* SUMMARY: Testing the arguments object
*
* See http://bugzilla.mozilla.org/show_bug.cgi?id=72884
*/
//-----------------------------------------------------------------------------
var gTestfile = 'arguments-001.js';
var UBound = 0;
var BUGNUMBER = 72884;
var summary = 'Testing the arguments object';
var status = '';
var statusitems = [ ];
var actual = '';
var actualvalues = [ ];
var expect= '';
var expectedvalues = [ ];
var a = '';
status = inSection(1);
function f()
{
delete arguments.length;
return arguments;
}
a = f();
actual = a instanceof Object;
expect = true;
addThis();
actual = a instanceof Array;
expect = false;
addThis();
actual = a.length;
expect = undefined;
addThis();
status = inSection(2);
a = f(1,2,3);
actual = a instanceof Object;
expect = true;
addThis();
actual = a instanceof Array;
expect = false;
addThis();
actual = a.length;
expect = undefined;
addThis();
actual = a[0];
expect = 1;
addThis();
actual = a[1];
expect = 2;
addThis();
actual = a[2];
expect = 3;
addThis();
status = inSection(3);
/*
* Brendan:
*
* Note that only callee and length can be overridden, so deleting an indexed
* property and asking for it again causes it to be recreated by args_resolve:
*
* function g(){delete arguments[0]; return arguments[0]}
* g(42) // should this print 42?
*
* I'm not positive this violates ECMA, which allows in chapter 16 for extensions
* including properties (does it allow for magically reappearing properties?). The
* delete operator successfully deletes arguments[0] and results in true, but that
* is not distinguishable from the case where arguments[0] was delegated to
* Arguments.prototype[0], which was how the bad old code worked.
*
* I'll ponder this last detail...
*
* UPDATE: Per ECMA-262, delete on an arguments[i] should succeed
* and remove that property from the arguments object, leaving any get
* of it after the delete to evaluate to undefined.
*/
function g()
{
delete arguments[0];
return arguments[0];
}
actual = g(42);
expect = undefined; // not 42...
addThis();
//-------------------------------------------------------------------------------------------------
test();
//-------------------------------------------------------------------------------------------------
function addThis()
{
statusitems[UBound] = status;
actualvalues[UBound] = actual;
expectedvalues[UBound] = expect;
UBound++;
}
function test()
{
enterFunc ('test');
printBugNumber(BUGNUMBER);
printStatus (summary);
for (var i = 0; i < UBound; i++)
{
reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
}
exitFunc ('test');
}
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