filer/tests/spec/fs.watch.spec.js

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var util = require('../lib/test-utils.js');
var expect = require('chai').expect;
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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();
}
});
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beforeEach(util.setup);
afterEach(util.cleanup);
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it('should be a function', function() {
var fs = util.fs();
expect(typeof fs.watch).to.equal('function');
});
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it('should get a change event when writing a file', function(done) {
var fs = util.fs();
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var watcher = fs.watch('/myfile', function(event, filename) {
expect(event).to.equal('change');
expect(filename).to.equal('/myfile');
watcher.close();
done();
});
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fs.writeFile('/myfile', 'data', function(error) {
if(error) throw error;
});
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});
it('should get a change event when writing a file beneath root dir with recursive=true', function(done) {
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var fs = util.fs();
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var watcher = fs.watch('/', { recursive: true }, function(event, filename) {
expect(event).to.equal('change');
expect(filename).to.equal('/');
watcher.close();
done();
});
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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;
});
});
});
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;
});
});
});