js/tests/js1_5/Array/regress-178722.js

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is JavaScript Engine testing utilities.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corp.
  19  * Portions created by the Initial Developer are Copyright (C) 2002
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   pschwartau@netscape.com
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either the GNU General Public License Version 2 or later (the "GPL"), or
  27  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  28  * in which case the provisions of the GPL or the LGPL are applicable instead
  29  * of those above. If you wish to allow use of your version of this file only
  30  * under the terms of either the GPL or the LGPL, and not to allow others to
  31  * use your version of this file under the terms of the MPL, indicate your
  32  * decision by deleting the provisions above and replace them with the notice
  33  * and other provisions required by the GPL or the LGPL. If you do not delete
  34  * the provisions above, a recipient may use your version of this file under
  35  * the terms of any one of the MPL, the GPL or the LGPL.
  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 /*
  40  *
  41  * Date:    06 November 2002
  42  * SUMMARY: arr.sort() should not output |undefined| when |arr| is empty
  43  * See http://bugzilla.mozilla.org/show_bug.cgi?id=178722
  44  *
  45  * ECMA-262 Ed.3: 15.4.4.11 Array.prototype.sort (comparefn)
  46  *
  47  * 1. Call the [[Get]] method of this object with argument "length".
  48  * 2. Call ToUint32(Result(1)).
  49  * 3. Perform an implementation-dependent sequence of calls to the [[Get]],
  50  *    [[Put]], and [[Delete]] methods of this object, etc. etc.
  51  * 4. Return this object.
  52  *
  53  *
  54  * Note that sort() is done in-place on |arr|. In other words, sort() is a
  55  * "destructive" method rather than a "functional" method. The return value
  56  * of |arr.sort()| and |arr| are the same object.
  57  *
  58  * If |arr| is an empty array, the return value of |arr.sort()| should be
  59  * an empty array, not the value |undefined| as was occurring in bug 178722.
  60  *
  61  */
  62 //-----------------------------------------------------------------------------
  63 var gTestfile = 'regress-178722.js';
  64 var UBound = 0;
  65 var BUGNUMBER = 178722;
  66 var summary = 'arr.sort() should not output |undefined| when |arr| is empty';
  67 var status = '';
  68 var statusitems = [];
  69 var actual = '';
  70 var actualvalues = [];
  71 var expect= '';
  72 var expectedvalues = [];
  73 var arr;
  74
  75
  76 // create empty array or pseudo-array objects in various ways
  77 var arr1 = Array();
  78 var arr2 = new Array();
  79 var arr3 = [];
  80 var arr4 = [1];
  81 arr4.pop();
  82
  83
  84 status = inSection(1);
  85 arr = arr1.sort();
  86 actual = arr instanceof Array && arr.length === 0 && arr === arr1;
  87 expect = true;
  88 addThis();
  89
  90 status = inSection(2);
  91 arr = arr2.sort();
  92 actual = arr instanceof Array && arr.length === 0 && arr === arr2;
  93 expect = true;
  94 addThis();
  95
  96 status = inSection(3);
  97 arr = arr3.sort();
  98 actual = arr instanceof Array && arr.length === 0 && arr === arr3;
  99 expect = true;
 100 addThis();
 101
 102 status = inSection(4);
 103 arr = arr4.sort();
 104 actual = arr instanceof Array && arr.length === 0 && arr === arr4;
 105 expect = true;
 106 addThis();
 107
 108 // now do the same thing, with non-default sorting:
 109 function g() {return 1;}
 110
 111 status = inSection('1a');
 112 arr = arr1.sort(g);
 113 actual = arr instanceof Array && arr.length === 0 && arr === arr1;
 114 expect = true;
 115 addThis();
 116
 117 status = inSection('2a');
 118 arr = arr2.sort(g);
 119 actual = arr instanceof Array && arr.length === 0 && arr === arr2;
 120 expect = true;
 121 addThis();
 122
 123 status = inSection('3a');
 124 arr = arr3.sort(g);
 125 actual = arr instanceof Array && arr.length === 0 && arr === arr3;
 126 expect = true;
 127 addThis();
 128
 129 status = inSection('4a');
 130 arr = arr4.sort(g);
 131 actual = arr instanceof Array && arr.length === 0 && arr === arr4;
 132 expect = true;
 133 addThis();
 134
 135
 136
 137 //-----------------------------------------------------------------------------
 138 test();
 139 //-----------------------------------------------------------------------------
 140
 141
 142
 143 function addThis()
 144 {
 145   statusitems[UBound] = status;
 146   actualvalues[UBound] = actual;
 147   expectedvalues[UBound] = expect;
 148   UBound++;
 149 }
 150
 151
 152 function test()
 153 {
 154   enterFunc('test');
 155   printBugNumber(BUGNUMBER);
 156   printStatus(summary);
 157
 158   for (var i=0; i<UBound; i++)
 159   {
 160     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
 161   }
 162
 163   exitFunc ('test');
 164 }