wraps expresso to allow for multiple async tests to be run simultaneously

expresso_suite_runner.js

var util     = require('util'),
    spawn    = require('child_process').spawn,
    expresso = 'expresso',
    async    = require('async');

async.parallel({
  "My Test" : function(cb){ runTest('./test/my_test.js', "My Test", cb) },
  "My Other Test" : function(cb){ runTest('./test/my_other_tests', "My Other Test", cb) },
},function(errors, results){
  util.print("Tests:\n");
  for(var test in results) {
    util.print("  " + test + ":")
    util.print(results[test].join(""));
  }
  
  util.print("\nErrors:\n");
  for(var test in errors) {
    util.print("  " + test + ":")
    util.print(errors[test].join(""));
  }
});  


function runTest(file, test, callBack){
  var proc = spawn(expresso, ['-I ./lib', file]),
  errors = [], results = [];
  
  //kill it after 10 seconds, not test should run longer than 10 seconds
  var killTo = setTimeout(function(){ proc.kill('SIGKILL') }, 10000);  
  
  proc.stdout.on('data', function(data){
    results.push(data);  
  });
   
  proc.stderr.on('data', function(data) {
    errors.push(data);
  });
   
  proc.on('exit', function(code) {
    var retErr = {}; retErr[test] = errors;
    
    errors.length == 0 
    ? callBack(null, results)
    : callBack(retErr, results);
        
    clearTimeout(killTo);
  });
}