gistfile1.py

import unittest
from gaetestbed import MailTestCase

class MyTestCase(unittest.TestCase, MailTestCase):
  def test_email_sent(self):
    # Do something that sends an e-mail
    send_email_to('test@example.org')

    # Check that the e-mail was sent to somebody
    self.assertEmailSent(to='test@example.org')
    self.assertEqual(len(self.get_sent_messages()), 1)