promise tests with https://github.com/mde/jake

Jakefile

var fs = require("fs"),
	qPromise = require('q'),
	pioPromise = require('promised-io/promise');

pioPromise.node = pioPromise.convertNodeAsyncFunction;

// var q = qPromise; // calls to 'fail' do nothing
var q = pioPromise; // calls to fail work fine

desc("promise async test task");
task("default", [], function() {
	q.node(fs.readdir)("/").then(function(dirs) {
		console.log(dirs.slice(0,3).join()); // always works, regardless of promise library
		fail("fail in success"); // works with promised-io, does nothing with q
	}, function(err) {
		fail("fail in reject"); // readdir always succeeds, we never get here.
	});
}, {async: true});