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.
  
  var common = require('../common');
  var assert = require('assert');
  var path = require('path');
  var fs = require('fs');
  
  var expectFilePath = process.platform === 'win32' ||
                       process.platform === 'linux' ||
                       process.platform === 'darwin';
  
  var watchSeenOne = 0;
  var watchSeenTwo = 0;
  var watchSeenThree = 0;
  
  var testDir = common.tmpDir;
  
  var filenameOne = 'watch.txt';
  var filepathOne = path.join(testDir, filenameOne);
  
  var filenameTwo = 'hasOwnProperty';
  var filepathTwo = filenameTwo;
  var filepathTwoAbs = path.join(testDir, filenameTwo);
  
  var filenameThree = 'newfile.txt';
  var testsubdir = path.join(testDir, 'testsubdir');
  var filepathThree = path.join(testsubdir, filenameThree);
  
  
  process.on('exit', function() {
    assert.ok(watchSeenOne > 0);
    assert.ok(watchSeenTwo > 0);
    assert.ok(watchSeenThree > 0);
  });
  
  // Clean up stale files (if any) from previous run.
  try { fs.unlinkSync(filepathOne); } catch (e) { }
  try { fs.unlinkSync(filepathTwoAbs); } catch (e) { }
  try { fs.unlinkSync(filepathThree); } catch (e) { }
  try { fs.rmdirSync(testsubdir); } catch (e) { }
  
  fs.writeFileSync(filepathOne, 'hello');
  
  assert.doesNotThrow(
      function() {
        var watcher = fs.watch(filepathOne)
        watcher.on('change', function(event, filename) {
          assert.equal('change', event);
  
          if (expectFilePath) {
            assert.equal('watch.txt', filename);
          }
          watcher.close();
          ++watchSeenOne;
        });
      }
  );
  
  setTimeout(function() {
    fs.writeFileSync(filepathOne, 'world');
  }, 1000);
  
  
  process.chdir(testDir);
  
  fs.writeFileSync(filepathTwoAbs, 'howdy');
  
  assert.doesNotThrow(
      function() {
        var watcher = fs.watch(filepathTwo, function(event, filename) {
          assert.equal('change', event);
  
          if (expectFilePath) {
            assert.equal('hasOwnProperty', filename);
          }
          watcher.close();
          ++watchSeenTwo;
        });
      }
  );
  
  setTimeout(function() {
    fs.writeFileSync(filepathTwoAbs, 'pardner');
  }, 1000);
  
  try { fs.unlinkSync(filepathThree); } catch (e) {}
  try { fs.mkdirSync(testsubdir, 0700); } catch (e) {}
  
  assert.doesNotThrow(
      function() {
        var watcher = fs.watch(testsubdir, function(event, filename) {
          var renameEv = process.platform === 'sunos' ? 'change' : 'rename';
          assert.equal(renameEv, event);
          if (expectFilePath) {
            assert.equal('newfile.txt', filename);
          } else {
            assert.equal(null, filename);
          }
          watcher.close();
          ++watchSeenThree;
        });
      }
  );
  
  setTimeout(function() {
    var fd = fs.openSync(filepathThree, 'w');
    fs.closeSync(fd);
  }, 1000);
  
  // https://github.com/joyent/node/issues/2293 - non-persistent watcher should
  // not block the event loop
  fs.watch(__filename, {persistent: false}, function() {
    assert(0);
  });
  