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'use strict';
const common = require('../common');
const bench = common.createBenchmark(main, {
encoding: ['utf8', 'base64', 'buffer'],
len: [2, 16, 256], // x16
n: [4e6]
});
// 16 chars each
const 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({ n, len, encoding }) {
var strings = [];
var results = [ len * 16 ];
if (encoding === 'buffer') {
strings = [ Buffer.alloc(len * 16, 'a') ];
} else {
for (const string of chars) {
// Strings must be built differently, depending on encoding
const data = string.repeat(len);
if (encoding === 'utf8') {
strings.push(data);
} else if (encoding === 'base64') {
// Base64 strings will be much longer than their UTF8 counterparts
strings.push(Buffer.from(data, 'utf8').toString('base64'));
}
}
// Check the result to ensure it is *properly* optimized
results = strings.map((val) => Buffer.byteLength(val, encoding));
}
bench.start();
for (let i = 0; i < n; i++) {
const index = n % strings.length;
// Go!
const r = Buffer.byteLength(strings[index], encoding);
if (r !== results[index])
throw new Error('incorrect return value');
}
bench.end(n);
}