Can not use multiprocessing with trial on windows.

New submission from ablmf <None>:

Try the code below:

{{{
#!python
#test_call.py

import time
from multiprocessing import Process, Queue
from twisted.trial import unittest

import wx

FRAME_NUM = 4

def f(q):
    app = wx.PySimpleApp()
    frame = wx.Frame(None, wx.ID_ANY, "Hello World")
    frame.Show(True)
    q.put(frame.Handle)
    app.MainLoop()

def makeFrame():
    q = Queue()
    p = Process(target=f, args=(q,))
    p.start()
    return p, q.get()

class TestInvite(unittest.TestCase):

    def setUp(self):
        self.app = wx.PySimpleApp()
        self.frames = []
        for i in range(FRAME_NUM):
            self.frames.append(makeFrame())

    def testInvite(self):
        return

    def tearDown(self):
        self.vb.UserUnregister()

        for p, f in self.frames:
            p.terminate()
}}}

Error message
{{{
[ERROR]: test_call.py

Traceback (most recent call last):
  File "D:\Python26\Lib\site-packages\twisted\trial\runner.py", line 643, in loadByNames
    things.append(self.findByName(name))
  File "D:\Python26\Lib\site-packages\twisted\trial\runner.py", line 453, in findByName
    return reflect.namedAny(name)
  File "D:\Python26\lib\site-packages\twisted\python\reflect.py", line 463, in namedAny
    raise ObjectNotFound('%r does not name an object' % (name,))
twisted.python.reflect.ObjectNotFound: 'test_call.py' does not name an object
}}}

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Type     : defect
Component: trial
Keywords : 
Priority : normal
Nosy     : 
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http://twistedmatrix.com/trac/ticket/3804