'Should raise exception with a message containing signal number.'

def test_exception_message_contains_signal_number(self):

    instance = self.test_instance
    args = self.test_args
    signal_number = self.test_signal
    expect_exception = SystemExit
    try:
        instance.terminate(*args)
    except expect_exception as exc:
        pass
    self.failUnlessIn(str(exc), str(signal_number))
