var util = require('../lib/test-utils.js'); var expect = require('chai').expect; describe('fs.readdir', function() { beforeEach(util.setup); afterEach(util.cleanup); it('should be a function', function() { var fs = util.fs(); expect(fs.readdir).to.be.a('function'); }); it('should return an error if the path does not exist', function(done) { var fs = util.fs(); fs.readdir('/tmp/mydir', function(error, files) { expect(error).to.exist; expect(error.code).to.equal('ENOENT'); expect(files).not.to.exist; done(); }); }); it('should return a list of files from an existing directory', function(done) { var fs = util.fs(); fs.mkdir('/tmp', function(error) { if(error) throw error; fs.readdir('/', function(error, files) { expect(error).not.to.exist; expect(files).to.exist; expect(files.length).to.equal(1); expect(files[0]).to.equal('tmp'); done(); }); }); }); it('should follow symbolic links', function(done) { var fs = util.fs(); fs.mkdir('/tmp', function(error) { if(error) throw error; fs.symlink('/', '/tmp/dirLink', function(error) { if(error) throw error; fs.readdir('/tmp/dirLink', function(error, files) { expect(error).not.to.exist; expect(files).to.exist; expect(files.length).to.equal(1); expect(files[0]).to.equal('tmp'); done(); }); }); }); }); it('(promise) should be a function', function() { var fsPromises = util.fs().promises; expect(fsPromises.readdir).to.be.a('function'); }); it('should return an error if the path is a file', function() { var fsPromises = util.fs().promises; return fsPromises.writeFile('/myfile', 'contents') .then(() => fsPromises.readdir('/myfile')) .catch(error => { expect(error).to.exist; expect(error.code).to.equal('ENOTDIR'); }); }); it('(promise) should return a list of files from an existing directory', function() { var fsPromises = util.fs().promises; return fsPromises.mkdir('/tmp') .then(() => { return fsPromises.stat('/'); }) .then(stats => { expect(stats).to.exist; expect(stats.isDirectory()).to.be.true; }) .then(() => { return fsPromises.readdir('/'); }) .then(files => { expect(files).to.exist; expect(files.length).to.equal(1); expect(files[0]).to.equal('tmp'); }); }); });