regress-57043.js   [plain text]

/*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s): pschwartau@netscape.com  
* Date: 03 December 2000
*
*
* SUMMARY:  This test arose from Bugzilla bug 57043: 
* "Negative integers as object properties: strange behavior!"
*
* We check that object properties may be indexed by signed 
* numeric literals, as in assignments like obj[-1] = 'Hello'  
* 
* NOTE: it should not matter whether we provide the literal with
* quotes around it or not; e.g. these should be equivalent:
*
*                                    obj[-1]  = 'Hello'
*                                    obj['-1']  = 'Hello'
*/
//-------------------------------------------------------------------------------------------------
var bug = 57043;
var summary = 'Indexing object properties by signed numerical literals -'
var statprefix = 'Adding a property to test object with an index of ';
var statsuffix =  ', testing it now -';
var propprefix = 'This is property ';
var obj = new Object();
var status = ''; var actual = ''; var expect = ''; var value = '';


//  various indices to try -
var index = Array(-5000, -507, -3, -2, -1, 0, 1, 2, 3);  


//-------------------------------------------------------------------------------------------------  
test();
//-------------------------------------------------------------------------------------------------


function test() 
{
  enterFunc ('test'); 
  printBugNumber (bug);
  printStatus (summary);

  for (j in index) {testProperty(index[j]);}

  exitFunc ('test');
}


function testProperty(i)
{
  status = getStatus(i);

  // try to assign a property using the given index -
  obj[i] = value = (propprefix  +  i);   
  
  // try to read the property back via the index (as number) -
  expect = value;
  actual = obj[i];
  reportCompare(expect, actual, status);  

  // try to read the property back via the index as string -
  expect = value;
  actual = obj[String(i)];
  reportCompare(expect, actual, status); 
}


function getStatus(i)
{ 
  return (statprefix  +  i  +  statsuffix); 
}