results.md

On Windows

B:\testem\node_bug>node -v
v0.8.6

B:\testem\node_bug>mocha -V
1.3.2

B:\testem\node_bug>node spawn.js

B:\testem\node_bug>

On OSX Lion

$ node -v
v0.8.6
$ mocha -V
1.3.2
$ node spawn.js
1..1
ok 1 hello should say hello

spawn.js

var exec = require('child_process').exec
var spawn = require('child_process').spawn
var exe = process.platform === 'win32' ? 
    'C:\\Users\\airportyh\\AppData\\Roaming\\npm\\mocha.cmd' :
    'mocha'
var p = spawn(exe, ['tests.js', '-R', 'tap'])
//var p = exec('mocha tests.js -R tap')
p.stdout.on('data', function(data){
    process.stdout.write(data + '')
})
p.stderr.on('data', function(data){
    process.stdout.write(data + '')
})
p.on('exit', function(){
    process.exit(0)
})
setInterval(function(){}, 1000)

tests.js

var assert = require('assert')

function hello(){
    return 'hello world'
}

describe('hello', function(){
    it('should say hello', function(){
        assert.equal(hello(), 'hello world')
    })
})