src/third_party/mozjs-45/js/src/tests/js1_5/Regress/regress-57043.js

/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*
 * 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 BUGNUMBER = 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 =
  [-1073741825, -1073741824, -1073741823, -5000, -507, -3, -2, -1, -0, 0, 1, 2, 3, 1073741823, 1073741824, 1073741825];


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


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

  for (var 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 positive(n) { return 1 / n > 0; }

function getStatus(i)
{
  return statprefix +
         (positive(i) ? i : "-" + -i) +
         statsuffix;
}