def METHOD_NAME(self, *args, **kwargs):
    worker = upcloud.UpcloudLatentWorker(
            *args, api_username='test-api-user', api_password='test-api-password', **kwargs)
    master = fakemaster.make_master(self, wantData=True)
    self._http = worker.client = yield fakehttpclientservice.HTTPClientService.getService(
        master, self, upcloud.DEFAULT_BASE_URL, auth=('test-api-user', 'test-api-password'),
        debug=False)
    worker.setServiceParent(master)
    yield master.startService()
    self.masterhash = hashlib.sha1(util.unicode2bytes(master.name)).hexdigest()[:6]
    self.addCleanup(master.stopService)
    self.worker = worker
    return worker