MochaJS: Mocha controller for Node

mocha-controller.js

var Mocha = require("mocha");
var mocha = new Mocha();
var _suites = [];
var _done = false;
        
/**
 * default mocha options
 * for other configurations, check out bin/_mocha
 */
mocha.reporter("nyan");
mocha.useColors(true);
mocha.growl();

module.exports = {
    /**
     * set interface (bdd is default) and make it global to node
     * @param  {string} interface bdd|tdd|exports|qunit
     */
    init: function(interface) {
        interface && mocha.ui(interface);
        mocha.suite.emit('pre-require', global, undefined, mocha);
    },
    /**
     * add suite
     * @param {function} suite to be executed later
     */
    add: function(suite) {
        mocha.suite && _suites.push(suite) && suite();
    },
    /**
     * run added suites
     */
    run: function(cb) {
        console.info('run mocha');

        var done = function () {
            _done = true;
            cb && cb();
            process.on('exit', function() {
                console.info("exit mocha");
                process.exit(1);
            });
        };

        mocha.run(done);
    },
    /**
     * end mocha test
     */
    exit: function() {
        if (_done) {
            process.exit();
        } else {
            var start = new Date().getTime(),
            interval = setInterval(function() {
                if (_done) {
                    console.log("test suites finished");
                    clearInterval(interval);
                    process.exit();
                } else if (new Date().getTime() - start > 5000) {
                    console.log("wait for nothing!");
                    clearInterval(interval);
                    process.exit();
                }
            }, 250);
        }
    },
    /**
     * change mocha options at runtime, e.g., "reporter", "nyan"
     */
    _set: function(key, val){
        mocha[property](val);
    }
};