var util = require('../lib/test-utils.js'); var expect = require('chai').expect; describe('fs.watch', function() { // Our watch infrastucture is dependent on document.localStorage // see lib/intercom.js. Bail if we don't have access to it. before(function() { if(typeof global.localStorage === 'undefined') { /* eslint no-console: 0 */ console.log('Skipping fs.watch() tests--not supported in current environment.'); this.skip(); } }); beforeEach(util.setup); afterEach(util.cleanup); it('should be a function', function() { var fs = util.fs(); expect(typeof fs.watch).to.equal('function'); }); it('should get a change event when writing a file', function(done) { var fs = util.fs(); var watcher = fs.watch('/myfile', function(event, filename) { expect(event).to.equal('change'); expect(filename).to.equal('/myfile'); watcher.close(); done(); }); fs.writeFile('/myfile', 'data', function(error) { if(error) throw error; }); }); it('should get a change event when writing a file beneath root dir with recursive=true', function(done) { var fs = util.fs(); var watcher = fs.watch('/', { recursive: true }, function(event, filename) { expect(event).to.equal('change'); expect(filename).to.equal('/'); watcher.close(); done(); }); fs.writeFile('/myfile', 'data', function(error) { if(error) throw error; }); }); it('should get a change event when writing a file in a dir with recursive=true', function(done) { var fs = util.fs(); fs.mkdir('/foo', function(err) { if(err) throw err; var watcher = fs.watch('/foo', { recursive: true }, function(event, filename) { expect(event).to.equal('change'); expect(filename).to.equal('/foo'); watcher.close(); done(); }); // This shouldn't produce a change event fs.writeFile('/myfile-not-in-foo', 'data', function(error) { if(error) throw error; }); // This should fs.writeFile('/foo/myfile', 'data', function(error) { if(error) throw error; }); }); }); // Bug to deal with this is filed at https://github.com/filerjs/filer/issues/594 it.skip('should get a change event when a hardlink is watched and the original file is changed', function(done) { var fs = util.fs(); fs.writeFile('/myfile', 'data', function(error) { if(error) throw error; fs.link('/myfile', '/hardlink', function(error) { if(error) throw error; var watcher = fs.watch('/hardlink', function(event, filename) { expect(event).to.equal('change'); expect(filename).to.equal('/hardlink'); watcher.close(); fs.readFile('/hardlink', 'utf8', function(error, data) { if(error) throw error; expect(data).to.equal('data...more data'); done(); }); }); fs.appendFile('/myfile', '...more data', function(error) { if(error) throw error; }); }); }); }); it('should get a change event when renaming a file', function(done) { var fs = util.fs(); fs.writeFile('/myfile', 'data', function(error) { if(error) throw error; //Normaly A 'rename' event should be thrown, but filer doesn't support that event at this time. //For now renaming a file will throw a change event. var watcher = fs.watch('/myfile', function(event, filename) { expect(event).to.equal('change'); expect(filename).to.equal('/myfile'); watcher.close(); done(); }); fs.rename('/myfile', '/mynewfile', function(error) { if(error) throw error; }); }); }); });