array-001.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): igor@icesoft.no, pschwartau@netscape.com
* Date: 24 September 2001
*
* SUMMARY: Truncating arrays that have decimal property names.
* From correspondence with Igor Bukanov <igor@icesoft.no>:
*/
//-----------------------------------------------------------------------------
var UBound = 0;
var bug = '(none)';
var summary = 'Truncating arrays that have decimal property names';
var BIG_INDEX = 4294967290;
var status = '';
var statusitems = [];
var actual = '';
var actualvalues = [];
var expect= '';
var expectedvalues = [];


var arr = Array(BIG_INDEX);
arr[BIG_INDEX - 1] = 'a';
arr[BIG_INDEX - 10000] = 'b';
arr[BIG_INDEX - 0.5] = 'c';  // not an array index - but a valid property name
// Truncate the array -
arr.length = BIG_INDEX - 5000;


// Enumerate its properties with for..in
var s = '';
for (var i in arr)
{
  s += arr[i];
}


/*
 * We expect s == 'cb' or 'bc' (EcmaScript does not fix the order).
 * Note 'c' is included: for..in includes ALL enumerable properties,
 * not just array-index properties. The bug was: Rhino gave s == ''.
 */
status = inSection(1);
actual = sortThis(s);
expect = 'bc';
addThis();



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



function sortThis(str)
{
  var chars = str.split('');
  chars = chars.sort();
  return chars.join('');
}


function addThis()
{
  statusitems[UBound] = status;
  actualvalues[UBound] = actual;
  expectedvalues[UBound] = expect;
  UBound++;
}


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

  for (var i=0; i<UBound; i++)
  {
    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
  }

  exitFunc ('test');
}