filer/tests/spec/node-js/simple/test-fs-watch.js

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var util = require('../../../lib/test-utils.js');
var expect = require('chai').expect;
/**
* NOTE: unlike node.js, which either doesn't give filenames (e.g., in case of
* fd vs. path) for events, or gives only a portion thereof (e.g., basname),
* we give full, abs paths always.
*/
var filenameOne = '/watch.txt';
var filenameTwo = '/hasOwnProperty';
describe('node.js tests: https://github.com/joyent/node/blob/master/test/simple/test-fs-watch.js', function() {
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beforeEach(util.setup);
afterEach(util.cleanup);
it('should get change event for writeFile() using FSWatcher object', function(done) {
var fs = util.fs();
var changes = 0;
var watcher = fs.watch(filenameOne);
watcher.on('change', function(event, filename) {
expect(event).to.equal('change');
expect(filename).to.equal(filenameOne);
// Make sure only one change event comes in (i.e., close() works)
changes++;
watcher.close();
fs.writeFile(filenameOne, 'hello again', function(error) {
expect(changes).to.equal(1);
done();
});
});
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fs.writeFile(filenameOne, 'hello');
});
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it('should get change event for writeFile() using fs.watch() only', function(done) {
var fs = util.fs();
var changes = 0;
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var watcher = fs.watch(filenameTwo, function(event, filename) {
expect(event).to.equal('change');
expect(filename).to.equal(filenameTwo);
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watcher.close();
done();
});
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fs.writeFile(filenameTwo, 'pardner');
});
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it('should allow watches on dirs', function(done) {
var fs = util.fs();
fs.mkdir('/tmp', function(error) {
if(error) throw error;
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var watcher = fs.watch('/tmp', function(event, filename) {
// TODO: node thinks this should be 'rename', need to add rename along with change.
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expect(event).to.equal('change');
expect(filename).to.equal('/tmp');
watcher.close();
done();
});
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fs.open('/tmp/newfile.txt', 'w', function(error, fd) {
if(error) throw error;
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fs.close(fd);
});
});
});
});