Mocha and node.exec_child

[Anthony Green]

I'm attempting to test a small node library with mocha:

var util = require('util'),

    exec = require('child_process').exec;

var seleniumLocator = function(command) {

  

  return function(callback) {

      

    var pathToSeleniumServer = './'  

      , pathToMatch =/\/[\w\-\/]+\/selenium-server-standalone-\d+\.\d+\.\d+\.jar/m

      , child;

    

    child = exec(command, function(error, stdout, stderr) {

              

        if (!error) {

          pathToSeleniumServer = (stdout.match(pathToMatch) || [])[0];

          callback(pathToSeleniumServer);

        }

    });

    

  };

  

}

var homebrewLocator = seleniumLocator('brew info selenium-server-standalone');

module.exports.homebrewLocator = homebrewLocator;

when I run the code from command line the callback can be seen to work however my test in mocha fails to identify the callback was invoked.

var should = require('should')

  , sinon = require('sinon') 

  , homebrewLocator = require('./../lib/locators/homebrew_locator').homebrewLocator;  

describe('seleniumLocator', function() {

  

  describe('when using Homebrew', function() {

    it('should calls a callback with the location of selenium', function() {

      

      var callback = sinon.spy();

      

      homebrewLocator(callback);

      callback.called.should.be.true;

      

    });

    

  });

  

});

Is there something about exec and scope I'm not getting?

[Anthony Green]

I realise now async code needs async tests

 it('should calls a callback with the location of selenium', function(done) {

      

      var callback = sinon.spy();

      

      homebrewLocator(function() { 

        callback(); 

        callback.called.should.be.true;

        done(); 

      });