text: // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  'use strict';
  const common = require('../common');
  const path = require('path');
  const fs = require('../../../../');
  
  const testDir = common.tmpDir;
  const testsubdir = path.join(testDir, 'testsubdir');
  const filepath = path.join(testsubdir, 'watch.txt');
  
  function cleanup() {
    try {
      fs.unlinkSync(filepath);
    } catch (e) { }
    try {
      fs.rmdirSync(testsubdir);
    } catch (e) { }
  }
  process.on('exit', cleanup);
  cleanup();
  
  try {
    fs.mkdirSync(testsubdir, 0o700);
  } catch (e) {}
  
  // Need a grace period, else the mkdirSync() above fires off an event.
  setTimeout(function() {
    const watcher = fs.watch(testDir, {persistent: true}, common.mustNotCall());
    setTimeout(function() {
      fs.writeFileSync(filepath, 'test');
    }, 100);
    setTimeout(function() {
      watcher.close();
    }, 500);
  }, 50);
  