var util = require('../lib/test-utils.js'); var expect = require('chai').expect; describe('fs.link', function() { beforeEach(util.setup); afterEach(util.cleanup); it('should be a function', function() { var fs = util.fs(); expect(fs.link).to.be.a('function'); }); it('should create a link to an existing file', function(done) { var fs = util.fs(); fs.open('/myfile', 'w+', function(error, fd) { if(error) throw error; fs.close(fd, function(error) { if(error) throw error; fs.link('/myfile', '/myotherfile', function(error) { if(error) throw error; fs.stat('/myfile', function(error, result) { if(error) throw error; var _oldstats = result; fs.stat('/myotherfile', function(error, result) { expect(error).not.to.exist; expect(result.nlinks).to.equal(2); expect(result.dev).to.equal(_oldstats.dev); expect(result.node).to.equal(_oldstats.node); expect(result.size).to.equal(_oldstats.size); expect(result.type).to.equal(_oldstats.type); done(); }); }); }); }); }); }); it('should create hard link to identical data node', function(done) { var fs = util.fs(); var contents = 'Hello World!'; fs.writeFile('/file', contents, function(err) { if(err) throw err; fs.link('/file', '/hlink', function(err) { if(err) throw err; fs.readFile('/file', 'utf8', function(err, fileData) { if(err) throw err; fs.readFile('/hlink', 'utf8', function(err, hlinkData) { if(err) throw err; expect(fileData).to.equal(hlinkData); done(); }); }); }); }); }); it('should not follow symbolic links', function(done) { var fs = util.fs(); fs.stat('/', function (error, result) { if (error) throw error; expect(result).to.exist; fs.symlink('/', '/myfileLink', function (error) { if (error) throw error; fs.link('/myfileLink', '/myotherfile', function (error) { if (error) throw error; fs.lstat('/myfileLink', function (error, result) { if (error) throw error; var _linkstats = result; fs.lstat('/myotherfile', function (error, result) { expect(error).not.to.exist; expect(result.dev).to.equal(_linkstats.dev); expect(result.node).to.equal(_linkstats.node); expect(result.size).to.equal(_linkstats.size); expect(result.type).to.equal(_linkstats.type); expect(result.nlinks).to.equal(2); done(); }); }); }); }); }); }); it('should not allow links to a directory', function(done) { var fs = util.fs(); fs.mkdir('/mydir', function(error) { if(error) throw error; fs.link('/mydir', '/mydirlink', function(error) { expect(error).to.exist; expect(error.code).to.equal('EPERM'); done(); }); }); }); }); describe('fs.promises.link', function() { beforeEach(util.setup); afterEach(util.cleanup); it('should be a function', function(){ var fsPromises = util.fs().promises; expect(fsPromises.link).to.be.a('function'); }); it('should return a promise', function() { var fsPromise = util.fs().promises; var p = fsPromise .writeFile('/myfile', '') .then(() => fsPromise.link('/myfile', '/myotherfile')); expect(p).to.be.a('promise'); return p; }); }); describe('fs.promises.link', function() { beforeEach(util.setup); afterEach(util.cleanup); it('should be a function', function() { var fs = util.fs(); expect(fs.promises.link).to.be.a('function'); }); it('should create a link to an existing file', function() { var fs = util.fs().promises; return fs.writeFile('/myfile', 'data') .then(() => fs.link('/myfile', '/myotherfile')) .then(() => fs.stat('/myfile')) .then(stats => { var _oldstats = stats; return fs.stat('/myotherfile') .then(stats => { expect(stats.nlinks).to.equal(2); expect(stats.dev).to.equal(_oldstats.dev); expect(stats.node).to.equal(_oldstats.node); expect(stats.size).to.equal(_oldstats.size); expect(stats.type).to.equal(_oldstats.type); }); }); }); it('should create hard link to identical data node', function() { var fs = util.fs().promises; var contents = 'Hello World!'; return fs.writeFile('/file', contents) .then(() => fs.link('/file', '/hlink')) .then(() => fs.readFile('/file', 'utf8')) .then(fileData => { return fs.readFile('/hlink', 'utf8') .then(hlinkData => expect(fileData).to.equal(hlinkData)); }); }); it('should not allow links to a directory', function() { var fs = util.fs().promises; return fs.mkdir('/mydir') .then(() => fs.link('/mydir', '/mydirlink')) .catch(error => { expect(error).to.exist; expect(error.code).to.equal('EPERM'); }); }); });