'L{TLSMemoryBIOFactory.doStart} and L{TLSMemoryBIOFactory.doStop} do
not log any messages.'

def test_quiet(self):

    contextFactory = ServerTLSContext()
    logs = []
    logger = logs.append
    log.addObserver(logger)
    self.addCleanup(log.removeObserver, logger)
    wrappedFactory = ServerFactory()
    wrappedFactory.doStart = (lambda : None)
    wrappedFactory.doStop = (lambda : None)
    factory = TLSMemoryBIOFactory(contextFactory, False, wrappedFactory)
    factory.doStart()
    factory.doStop()
    self.assertEqual(logs, [])
