var common = require('../common'); var bench = common.createBenchmark(main, { encoding: ['utf8', 'base64'], len: [1, 2, 4, 16, 64, 256], // x16 n: [5e6] }); // 16 chars each var chars = [ 'hello brendan!!!', // 1 byte 'ΰαβγδεζηθικλμνξο', // 2 bytes '挰挱挲挳挴挵挶挷挸挹挺挻挼挽挾挿', // 3 bytes '𠜎𠜱𠝹𠱓𠱸𠲖𠳏𠳕𠴕𠵼𠵿𠸎𠸏𠹷𠺝𠺢' // 4 bytes ]; function main(conf) { var n = conf.n | 0; var len = conf.len | 0; var encoding = conf.encoding; var strings = []; for (var string of chars) { // Strings must be built differently, depending on encoding var data = buildString(string, len); if (encoding === 'utf8') { strings.push(data); } else if (encoding === 'base64') { // Base64 strings will be much longer than their UTF8 counterparts strings.push(new Buffer(data, 'utf8').toString('base64')); } } // Check the result to ensure it is *properly* optimized var results = strings.map(function(val) { return Buffer.byteLength(val, encoding); }); bench.start(); for (var i = 0; i < n; i++) { var index = n % strings.length; // Go! var r = Buffer.byteLength(strings[index], encoding); if (r !== results[index]) throw Error('incorrect return value'); } bench.end(n); } function buildString(str, times) { if (times == 1) return str; return str + buildString(str, times - 1); }