EXPECT_EQ(TF_GetCode(status), TF_OK) << TF_Message(status);
  server_def.set_job_name("worker");
  server_def.set_task_index(0);
  tensorflow::ClusterDef* cluster_def = server_def.mutable_cluster();
  tensorflow::JobDef* job_def = cluster_def->mutable_job(0);
  int worker_port = tensorflow::testing::PickUnusedPortOrDie();
  job_def->mutable_tasks()->at(0) =
      tensorflow::strings::StrCat("localhost:", worker_port);