| /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| /* ***** BEGIN LICENSE BLOCK ***** |
| * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| * |
| * The contents of this file are subject to the Mozilla 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 |
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| * |
| * Software distributed under the License is distributed on an "AS IS" basis, |
| * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
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| * License. |
| * |
| * The Original Code is JavaScript Engine testing utilities. |
| * |
| * The Initial Developer of the Original Code is |
| * Mozilla Foundation. |
| * Portions created by the Initial Developer are Copyright (C) 2005 |
| * the Initial Developer. All Rights Reserved. |
| * |
| * Contributor(s): djoham@criadvantage.com |
| * Bob Clary <bob@bclary.com> |
| * |
| * Alternatively, the contents of this file may be used under the terms of |
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| * ***** END LICENSE BLOCK ***** */ |
| |
| var gTestfile = 'regress-56940-02.js'; |
| //----------------------------------------------------------------------------- |
| var BUGNUMBER = 56940; |
| var summary = 'String concat should not be O(N**2)'; |
| var actual = ''; |
| var expect = ''; |
| |
| printBugNumber(BUGNUMBER); |
| printStatus (summary); |
| |
| var data = {X:[], Y:[]}; |
| for (var size = 1000; size <= 10000; size += 1000) |
| { |
| data.X.push(size); |
| data.Y.push(concat(size)); |
| gc(); |
| } |
| |
| var order = BigO(data); |
| |
| var msg = ''; |
| for (var p = 0; p < data.X.length; p++) |
| { |
| msg += '(' + data.X[p] + ', ' + data.Y[p] + '); '; |
| } |
| printStatus(msg); |
| printStatus('Order: ' + order); |
| reportCompare(true, order < 2, 'BigO ' + order + ' < 2'); |
| |
| function concat(size) |
| { |
| var x = ''; |
| var y = 'Mozilla Mozilla Mozilla Mozilla '; |
| var z = 'goober '; |
| var start = new Date(); |
| |
| for (var loop = 0; loop < size; loop++) |
| { |
| x += y + z + y + z + y + z; |
| } |
| var stop = new Date(); |
| return stop - start; |
| } |