test_daemon.py 文件源码

def test_start(self):
        """
        Verifies that pidfile is created, process exists, pidfile is not empty.
        """

        result = os.system(self.cmd % (THIS_FILE_PATH, 'start', self.pidfile))
        sleep(1)

        self.assertTrue(os.path.exists(self.pidfile),
                        'Pidfile has not been created')

        with open(self.pidfile) as pid_file:
            pid = pid_file.read().rstrip()

        self.assertTrue(pid, 'Pidfile is empty')

        self.assertTrue(psutil.pid_exists(int(pid)),
                        'Process with specified pid does not exist')

        self.assertEqual(result, 0, 'Wrong return code')