1// Copyright Joyent, Inc. and other Node contributors. 2// 3// Permission is hereby granted, free of charge, to any person obtaining a 4// copy of this software and associated documentation files (the 5// "Software"), to deal in the Software without restriction, including 6// without limitation the rights to use, copy, modify, merge, publish, 7// distribute, sublicense, and/or sell copies of the Software, and to permit 8// persons to whom the Software is furnished to do so, subject to the 9// following conditions: 10// 11// The above copyright notice and this permission notice shall be included 12// in all copies or substantial portions of the Software. 13// 14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 15// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 16// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 17// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 18// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 19// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 20// USE OR OTHER DEALINGS IN THE SOFTWARE. 21 22'use strict'; 23require('../common'); 24const assert = require('assert'); 25const path = require('path'); 26const fs = require('fs'); 27 28const tmpdir = require('../common/tmpdir'); 29 30const FILENAME = path.join(tmpdir.path, 'watch-me'); 31const TIMEOUT = 1300; 32 33let nevents = 0; 34 35try { 36 fs.unlinkSync(FILENAME); 37} catch { 38 // swallow 39} 40 41fs.watchFile(FILENAME, { interval: TIMEOUT - 250 }, function(curr, prev) { 42 console.log([curr, prev]); 43 switch (++nevents) { 44 case 1: 45 assert.strictEqual(fs.existsSync(FILENAME), false); 46 break; 47 case 2: 48 case 3: 49 assert.strictEqual(fs.existsSync(FILENAME), true); 50 break; 51 case 4: 52 assert.strictEqual(fs.existsSync(FILENAME), false); 53 fs.unwatchFile(FILENAME); 54 break; 55 default: 56 assert(0); 57 } 58}); 59 60process.on('exit', function() { 61 assert.strictEqual(nevents, 4); 62}); 63 64setTimeout(createFile, TIMEOUT); 65 66function createFile() { 67 console.log('creating file'); 68 fs.writeFileSync(FILENAME, 'test'); 69 setTimeout(touchFile, TIMEOUT); 70} 71 72function touchFile() { 73 console.log('touch file'); 74 fs.writeFileSync(FILENAME, 'test'); 75 setTimeout(removeFile, TIMEOUT); 76} 77 78function removeFile() { 79 console.log('remove file'); 80 fs.unlinkSync(FILENAME); 81} 82