def test_daemonize(self):
        with AlternateReactor(FakeDaemonizingReactor()):
            self.runner.setupEnvironment(None, ".", False, None, None)
        self.assertTrue(self.daemon)
L{UnixApplicationRunner.setupEnvironment} daemonizes the process if
dataset/ETHPy150Open twisted/twisted/twisted/test/test_twistd.py/UnixApplicationRunnerSetupEnvironmentTests.test_daemonize