filer/tests/spec/fs.readdir.spec.js

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var util = require('../lib/test-utils.js');
var expect = require('chai').expect;
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describe('fs.readdir', function() {
beforeEach(util.setup);
afterEach(util.cleanup);
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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');
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expect(files).not.to.exist;
done();
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});
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});
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it('should return a list of files from an existing directory', function(done) {
var fs = util.fs();
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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();
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});
});
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});
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it('should follow symbolic links', function(done) {
var fs = util.fs();
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fs.mkdir('/tmp', function(error) {
if(error) throw error;
fs.symlink('/', '/tmp/dirLink', function(error) {
if(error) throw error;
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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();
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});
});
});
});
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');
});
});
});