'use strict';

const common = require('../common');

const fs = require('fs');

const tmpdir = require('../../test/common/tmpdir');

tmpdir.refresh();

const tmpfile = tmpdir.resolve(`.existing-file-${process.pid}`);

fs.writeFileSync(tmpfile, 'this-is-for-a-benchmark', 'utf8');

const bench = common.createBenchmark(main, {

type: ['existing', 'non-existing', 'non-flat-existing'],

method: ['access', 'accessSync'],

n: [1e5],

});

function runBench(n, path) {

for (let i = 0; i < n; i++) {

try {

fs.accessSync(path);

} catch {

// do nothing

}

}

}

function runAsyncBench(n, path) {

(function r(cntr, path) {

if (cntr-- <= 0)

return bench.end(n);

fs.access(path, () => {

r(cntr, path);

});

})(n, path);

}

function main({ n, type, method }) {

let path;

switch (type) {

case 'existing':

path = __filename;

break;

case 'non-flat-existing':

path = tmpfile;

break;

case 'non-existing':

path = tmpdir.resolve(`.non-existing-file-${process.pid}`);

break;

default:

new Error('Invalid type');

}

if (method === 'access') {

// Warmup the filesystem - it doesn't need to use the async method

runBench(n, path);

bench.start();

runAsyncBench(n, path);

} else {

// warmup

runBench(n, path);

bench.start();

runBench(n, path);

bench.end(n);

}

}