def METHOD_NAME(self):
    job_nodes = self._job_resource.init_job_node_meta(
        1,
        self._elastic_job.get_node_service_addr,
        self._elastic_job.get_node_name,
    )
    ps_manager = ParameterServerManager(
        job_nodes[NodeType.PS],
        self._job_resource,
        3,
        self._elastic_job.get_node_service_addr,
        self._elastic_job.get_node_name,
    )
    for node in ps_manager._nodes.values():
        node.status = NodeStatus.RUNNING
    ps_manager._scale_down_ps(1)
    self.assertEqual(len(ps_manager._pre_dropped_ps), 1)
    self.assertEqual(ps_manager._pre_dropped_ps[0].id, 1)
    plan = ps_manager.process_after_ps_cluster_ready()
    self.assertEqual(plan.remove_nodes[0].name, "test-edljob-ps-1")