1'use strict';
2const common = require('../common');
3
4const bench = common.createBenchmark(main, {
5  type: ['one_byte', 'two_bytes', 'three_bytes', 'four_bytes'],
6  encoding: ['utf8', 'base64'],
7  repeat: [1, 2, 16, 256], // x16
8  n: [4e6],
9});
10
11// 16 chars each
12const chars = {
13  one_byte: 'hello brendan!!!',
14  two_bytes: 'ΰαβγδεζηθικλμνξο',
15  three_bytes: '挰挱挲挳挴挵挶挷挸挹挺挻挼挽挾挿',
16  four_bytes: '����������������',
17};
18
19function getInput(type, repeat, encoding) {
20  const original = (repeat === 1) ? chars[type] : chars[type].repeat(repeat);
21  if (encoding === 'base64') {
22    Buffer.from(original, 'utf8').toString('base64');
23  }
24  return original;
25}
26
27function main({ n, repeat, encoding, type }) {
28  const data = getInput(type, repeat, encoding);
29  const expected = Buffer.byteLength(data, encoding);
30  let changed = false;
31  bench.start();
32  for (let i = 0; i < n; i++) {
33    const actual = Buffer.byteLength(data, encoding);
34    if (expected !== actual) { changed = true; }
35  }
36  bench.end(n);
37  if (changed) {
38    throw new Error('Result changed during iteration');
39  }
40}
41