tests/mozilla/js1_5/Regress/regress-57043.js

   1 /*
   2 * The contents of this file are subject to the Netscape Public
   3 * License Version 1.1 (the "License"); you may not use this file
   4 * except in compliance with the License. You may obtain a copy of
   5 * the License at http://www.mozilla.org/NPL/
   6 *
   7 * Software distributed under the License is distributed on an "AS
   8 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
   9 * implied. See the License for the specific language governing
  10 * rights and limitations under the License.
  11 *
  12 * The Original Code is mozilla.org code.
  13 *
  14 * The Initial Developer of the Original Code is Netscape
  15 * Communications Corporation.  Portions created by Netscape are
  16 * Copyright (C) 1998 Netscape Communications Corporation. All
  17 * Rights Reserved.
  18 *
  19 * Contributor(s): pschwartau@netscape.com
  20 * Date: 03 December 2000
  21 *
  22 *
  23 * SUMMARY:  This test arose from Bugzilla bug 57043:
  24 * "Negative integers as object properties: strange behavior!"
  25 *
  26 * We check that object properties may be indexed by signed
  27 * numeric literals, as in assignments like obj[-1] = 'Hello'
  28 *
  29 * NOTE: it should not matter whether we provide the literal with
  30 * quotes around it or not; e.g. these should be equivalent:
  31 *
  32 *                                    obj[-1]  = 'Hello'
  33 *                                    obj['-1']  = 'Hello'
  34 */
  35 //-------------------------------------------------------------------------------------------------
  36 var bug = 57043;
  37 var summary = 'Indexing object properties by signed numerical literals -'
  38 var statprefix = 'Adding a property to test object with an index of ';
  39 var statsuffix =  ', testing it now -';
  40 var propprefix = 'This is property ';
  41 var obj = new Object();
  42 var status = ''; var actual = ''; var expect = ''; var value = '';
  43
  44
  45 //  various indices to try -
  46 var index = Array(-5000, -507, -3, -2, -1, 0, 1, 2, 3);
  47
  48
  49 //-------------------------------------------------------------------------------------------------
  50 test();
  51 //-------------------------------------------------------------------------------------------------
  52
  53
  54 function test()
  55 {
  56   enterFunc ('test');
  57   printBugNumber (bug);
  58   printStatus (summary);
  59
  60   for (j in index) {testProperty(index[j]);}
  61
  62   exitFunc ('test');
  63 }
  64
  65
  66 function testProperty(i)
  67 {
  68   status = getStatus(i);
  69
  70   // try to assign a property using the given index -
  71   obj[i] = value = (propprefix  +  i);
  72
  73   // try to read the property back via the index (as number) -
  74   expect = value;
  75   actual = obj[i];
  76   reportCompare(expect, actual, status);
  77
  78   // try to read the property back via the index as string -
  79   expect = value;
  80   actual = obj[String(i)];
  81   reportCompare(expect, actual, status);
  82 }
  83
  84
  85 function getStatus(i)
  86 {
  87   return (statprefix  +  i  +  statsuffix);
  88 }