1// Copyright 2013 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28// Performance test for overriden methods. Makes sure that default case 29// is faster (cached) than the general case. 30 31// Default, cached. 32var startTime = new Date(); 33for (var i = 0; i < 1000; i++) { 34 'a'.localeCompare('c'); 35} 36var endTime = new Date(); 37var cachedTime = endTime.getTime() - startTime.getTime(); 38 39// Not cached. 40startTime = new Date(); 41for (var i = 0; i < 1000; i++) { 42 'a'.localeCompare('c', 'sr'); 43} 44endTime = new Date(); 45var nonCachedTime = endTime.getTime() - startTime.getTime(); 46 47// Using collator. Faster than default, but not by much. 48var collator = Intl.Collator(); 49startTime = new Date(); 50for (var i = 0; i < 1000; i++) { 51 collator.compare('a', 'c'); 52} 53endTime = new Date(); 54collatorTime = endTime.getTime() - startTime.getTime(); 55 56// Difference is within 20%. 57assertTrue(collatorTime < cachedTime); 58// Non-cached time is much slower, measured to 12.5 times. 59assertTrue(cachedTime < nonCachedTime); 60