How to use the testinfra.modules.service.Service function in testinfra

    @property
    def is_running(self):
        return self.run_test("/etc/rc.d/%s check", self.name).rc == 0

    @property
    def is_enabled(self):
        if self.name in self.check_output('rcctl ls on').splitlines():
            return True
        if self.name in self.check_output('rcctl ls off').splitlines():
            return False
        raise RuntimeError(
            "Unable to determine state of {0}. Does this service exist?"
            .format(self.name))


class NetBSDService(Service):

    @property
    def is_running(self):
        return self.run_test("/etc/rc.d/%s onestatus", self.name).rc == 0

    @property
    def is_enabled(self):
        raise NotImplementedError

    @property
    def is_running(self):
        return self.run_test("service %s onestatus", self.name).rc == 0

    @property
    def is_enabled(self):
        # Return list of enabled services like
        # /etc/rc.d/sshd
        # /etc/rc.d/sendmail
        for path in self.check_output("service -e").splitlines():
            if path and path.rsplit("/", 1)[1] == self.name:
                return True
        return False


class OpenBSDService(Service):

    @property
    def is_running(self):
        return self.run_test("/etc/rc.d/%s check", self.name).rc == 0

    @property
    def is_enabled(self):
        if self.name in self.check_output('rcctl ls on').splitlines():
            return True
        if self.name in self.check_output('rcctl ls off').splitlines():
            return False
        raise RuntimeError(
            "Unable to determine state of {0}. Does this service exist?"
            .format(self.name))

class OpenRCService(SysvService):

    @cached_property
    def _service_command(self):
        return self.find_command("rc-service")

    @property
    def is_enabled(self):
        return bool(self.check_output(
            "find /etc/runlevels/ -name %s",
            self.name,
        ))


class FreeBSDService(Service):

    @property
    def is_running(self):
        return self.run_test("service %s onestatus", self.name).rc == 0

    @property
    def is_enabled(self):
        # Return list of enabled services like
        # /etc/rc.d/sshd
        # /etc/rc.d/sendmail
        for path in self.check_output("service -e").splitlines():
            if path and path.rsplit("/", 1)[1] == self.name:
                return True
        return False

def __init__(self, name):
        self.name = name
        super(Service, self).__init__()

if host.exists("rc-service"):
                return OpenRCService
            return SysvService
        if host.system_info.type == "freebsd":
            return FreeBSDService
        if host.system_info.type == "openbsd":
            return OpenBSDService
        if host.system_info.type == "netbsd":
            return NetBSDService
        raise NotImplementedError

    def __repr__(self):
        return "" % (self.name,)


class SysvService(Service):

    @cached_property
    def _service_command(self):
        return self.find_command('service')

    @property
    def is_running(self):
        # based on /lib/lsb/init-functions
        # 0: program running
        # 1: program is dead and pid file exists
        # 3: not running and pid file does not exists
        # 4: Unable to determine status
        # 8: starting (alpine specific ?)
        return self.run_expect(
            [0, 1, 3, 8], "%s %s status",
            self._service_command, self.name).rc == 0