text: """Tests for certbot.notify."""
  import socket
  import unittest
  
  import mock
  
  
  class NotifyTests(unittest.TestCase):
      """Tests for the notifier."""
  
      @mock.patch("certbot.notify.smtplib.LMTP")
      def test_smtp_success(self, mock_lmtp):
          from certbot.notify import notify
          lmtp_obj = mock.MagicMock()
          mock_lmtp.return_value = lmtp_obj
          self.assertTrue(notify("Goose", "auntrhody@example.com",
                                 "The old grey goose is dead."))
          self.assertEqual(lmtp_obj.connect.call_count, 1)
          self.assertEqual(lmtp_obj.sendmail.call_count, 1)
  
      @mock.patch("certbot.notify.smtplib.LMTP")
      @mock.patch("certbot.notify.subprocess.Popen")
      def test_smtp_failure(self, mock_popen, mock_lmtp):
          from certbot.notify import notify
          lmtp_obj = mock.MagicMock()
          mock_lmtp.return_value = lmtp_obj
          lmtp_obj.sendmail.side_effect = socket.error(17)
          proc = mock.MagicMock()
          mock_popen.return_value = proc
          self.assertTrue(notify("Goose", "auntrhody@example.com",
                                 "The old grey goose is dead."))
          self.assertEqual(lmtp_obj.sendmail.call_count, 1)
          self.assertEqual(proc.communicate.call_count, 1)
  
      @mock.patch("certbot.notify.smtplib.LMTP")
      @mock.patch("certbot.notify.subprocess.Popen")
      def test_everything_fails(self, mock_popen, mock_lmtp):
          from certbot.notify import notify
          lmtp_obj = mock.MagicMock()
          mock_lmtp.return_value = lmtp_obj
          lmtp_obj.sendmail.side_effect = socket.error(17)
          proc = mock.MagicMock()
          mock_popen.return_value = proc
          proc.communicate.side_effect = OSError("What we have here is a "
                                                 "failure to communicate.")
          self.assertFalse(notify("Goose", "auntrhody@example.com",
                                  "The old grey goose is dead."))
          self.assertEqual(lmtp_obj.sendmail.call_count, 1)
          self.assertEqual(proc.communicate.call_count, 1)
  
  if __name__ == "__main__":
      unittest.main()  # pragma: no cover
  