regress-57043.js - mozsearch

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/* -*- 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()

  printBugNumber(BUGNUMBER);

  printStatus (summary);

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

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;