1'use strict';
2const common = require('../common.js');
3
4const bench = common.createBenchmark(main, {
5  bytes: [0, 8, 128, 32 * 1024],
6  partial: ['true', 'false'],
7  n: [6e6],
8}, {
9  combinationFilter: (p) => {
10    return (p.partial === 'false' && p.bytes === 0) ||
11           (p.partial !== 'false' && p.bytes !== 0);
12  },
13  test: { partial: 'false', bytes: 0 },
14});
15
16function main({ n, bytes, partial }) {
17  const source = Buffer.allocUnsafe(bytes);
18  const target = Buffer.allocUnsafe(bytes);
19  const sourceStart = (partial === 'true' ? Math.floor(bytes / 2) : 0);
20  bench.start();
21  for (let i = 0; i < n; i++) {
22    source.copy(target, 0, sourceStart);
23  }
24  bench.end(n);
25}
26