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');

}, 20);

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');

}, 20);

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);

}, 20);

// https://github.com/joyent/node/issues/2293 - non-persistent watcher should

// not block the event loop

fs.watch(__filename, {persistent: false}, function() {

assert(0);

});

// whitebox test to ensure that wrapped FSEvent is safe

// https://github.com/joyent/node/issues/6690

var oldhandle;

assert.throws(function() {

var w = fs.watch(__filename, function(event, filename) { });

oldhandle = w._handle;

w._handle = { close: w._handle.close };

w.close();

}, TypeError);

oldhandle.close(); // clean up

assert.throws(function() {

var w = fs.watchFile(__filename, {persistent:false}, function(){});

oldhandle = w._handle;

w._handle = { stop: w._handle.stop };

w.stop();

}, TypeError);

oldhandle.stop(); // clean up