| /* -*- 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 |
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| * 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'); |
| } |