'use strict';

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

if (common.isIBMi)

common.skip('IBMi does not support `fs.watch()`');

// fs-watch on folders have limited capability in AIX.

// The testcase makes use of folder watching, and causes

// hang. This behavior is documented. Skip this for AIX.

if (common.isAIX)

common.skip('folder watch capability is limited in AIX.');

const assert = require('assert');

const path = require('path');

const fs = require('fs');

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

const testDir = tmpdir.path;

tmpdir.refresh();

// Add a file to already watching folder

const rootDirectory = fs.mkdtempSync(testDir + path.sep);

const testDirectory = path.join(rootDirectory, 'test-1');

fs.mkdirSync(testDirectory);

const testFile = path.join(testDirectory, 'file-1.txt');

const watcher = fs.watch(testDirectory, { recursive: true });

let watcherClosed = false;

watcher.on('change', common.mustCallAtLeast((event, filename) => {

if (filename === path.basename(testFile)) {

assert.strictEqual(event, 'rename');

watcher.close();

watcherClosed = true;

}

}));

// Do the write with a delay to ensure that the OS is ready to notify us.

setTimeout(() => {

fs.writeFileSync(testFile, 'world');

}, common.platformTimeout(200));

process.once('exit', function() {

assert(watcherClosed, 'watcher Object was not closed');

});