watchr.js

var Projstrap = require('projstrap'),

    exec = require('child_process').exec,

    //Command to run tests (change this to whatever you use)
    specHelper = __dirname + '/test/helper.js',
    cmd = './node_modules/mocha/bin/mocha --growl -c --reporter Spec ' + specHelper + ' ',
    watchr,
    suite;


suite = new Projstrap.Suite({

  //Path to the root of the project
  path: __dirname,

  //path to your javascript
  libPath: 'lib/',

  //path to your spec(s) or tests
  specPath: 'test/',

  //what your files are named (usually .js)
  libSuffix: '.js',

  //suffix for tests (usually -spec.js or Spec.js)
  specSuffix: '-test.js'
});


//Create new Watchr instance
//Assumes this file is in the root of your project
watchr = new Projstrap.Watchr(__dirname, {
  //Poll very frequently
  rate: 5
});


//change is fired when file is created, modified or deleted
watchr.on('change', function(event) {
  var spec = suite.specFromPath(event.path);

  //Skip deletion events
  if (event.type == 'deleted') {
    return;
  }


  //Skip changes on files we don't care about
  if (!spec.isSpec && !spec.isLib) {
    return;
  }
  console.log('Executing:', cmd + spec.specPath);

  exec(cmd + spec.specPath.replace('spec', 'test'), function(err, stdout, stderr) {
    if (stderr) {
      console.error(stderr);
    }

    console.log(stdout);
  });
});

watchr.start();