class_docstr: map node test.
class_docstr_tok: ["map","node","test","."]
code: def setUp(self):
      self.node_repr = NodeRepr(uid=uuid.uuid4().hex, **self.node_info)
      self.op_pool = OperatorPool()
      self.thread_pool = ThreadPoolExecutor()
  
imports: import unittest
  import time
  import copy
  import uuid
  from concurrent.futures import ThreadPoolExecutor
  from towhee.runtime.node_repr import NodeRepr
  from towhee.runtime.nodes import create_node, NodeStatus
  from towhee.runtime.data_queue import DataQueue, ColumnType, Empty
  from towhee.runtime.operator_manager import OperatorPool
label_desc: Use image node_id 1 for calling the TestMapNode obj's underlying member method code with example usage: obj.setUp() without return types