text: # Copyright (c) Twisted Matrix Laboratories.
  # See LICENSE for details.
  
  
  """Test cases for bounce message generation
  """
  
  from twisted.trial import unittest
  from twisted.mail import bounce
  import cStringIO
  import email.message
  import email.parser
  
  class BounceTests(unittest.TestCase):
      """
      testcases for bounce message generation
      """
  
      def testBounceFormat(self):
          from_, to, s = bounce.generateBounce(cStringIO.StringIO('''\
  From: Moshe Zadka <moshez@example.com>
  To: nonexistent@example.org
  Subject: test
  
  '''), 'moshez@example.com', 'nonexistent@example.org')
          self.assertEqual(from_, '')
          self.assertEqual(to, 'moshez@example.com')
          emailParser = email.parser.Parser()
          mess = emailParser.parse(cStringIO.StringIO(s))
          self.assertEqual(mess['To'], 'moshez@example.com')
          self.assertEqual(mess['From'], 'postmaster@example.org')
          self.assertEqual(mess['subject'], 'Returned Mail: see transcript for details')
  
  
      def testBounceMIME(self):
          pass
  