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91 lines
2.8 KiB
JavaScript
Executable File
91 lines
2.8 KiB
JavaScript
Executable File
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is JavaScript Engine testing utilities.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s): Phil Schwartau <pschwartau@meer.net>
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* Bob Clary <bob@bclary.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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var gTestfile = 'regress-157334-01.js';
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//-----------------------------------------------------------------------------
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var BUGNUMBER = 56940;
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var summary = 'String concat should not be O(N**2)';
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var actual = '';
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var expect = '';
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printBugNumber(BUGNUMBER);
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printStatus (summary);
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var data = {X:[], Y:[]};
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for (var size = 1000; size < 10000; size += 1000)
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{
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data.X.push(size);
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data.Y.push(concat(size));
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gc();
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}
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var order = BigO(data);
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var msg = '';
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for (var p = 0; p < data.X.length; p++)
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{
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msg += '(' + data.X[p] + ', ' + data.Y[p] + '); ';
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}
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printStatus(msg);
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printStatus('Order: ' + order);
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reportCompare(true, order < 2, 'BigO ' + order + ' < 2');
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function concat(size)
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{
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var c='qwertyuiop';
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var x='';
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var y='';
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var loop;
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for (loop = 0; loop < size; loop++)
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{
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x += c;
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}
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y = x + 'y';
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x = x + 'x';
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var start = new Date();
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for (loop = 0; loop < 1000; loop++)
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{
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var z = x + y + loop.toString();
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}
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var stop = new Date();
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return stop - start;
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}
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