benchmark: add cpSync benchmark

PR-URL: https://github.com/nodejs/node/pull/53612
Reviewed-By: Chemi Atlow <chemi@atlow.co.il>
Reviewed-By: LiviaMedeiros <livia@cirno.name>
Reviewed-By: Vinícius Lourenço Claro Cardoso <contact@viniciusl.com.br>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

benchmark/fs/bench-cpSync.js

@@ -0,0 +1,23 @@
+'use strict';
+
+const common = require('../common');
+const fs = require('fs');
+const path = require('path');
+const tmpdir = require('../../test/common/tmpdir');
+tmpdir.refresh();
+
+const bench = common.createBenchmark(main, {
+  n: [1, 100, 10_000],
+});
+
+function main({ n }) {
+  tmpdir.refresh();
+  const options = { force: true, recursive: true };
+  const src = path.join(__dirname, '../../test/fixtures/copy');
+  const dest = tmpdir.resolve(`${process.pid}/subdir/cp-bench-${process.pid}`);
+  bench.start();
+  for (let i = 0; i < n; i++) {
+    fs.cpSync(src, dest, options);
+  }
+  bench.end(n);
+}