class_docstr: map node test.
class_docstr_tok: ["map","node","test","."]
code: def test_create_op_failed(self):
      node_info = copy.deepcopy(self.node_info)
      node_info["op_info"]["operator"] = "mock"
      node_repr = NodeRepr(uid="test_node", **node_info)
      in_que = DataQueue([("num", ColumnType.QUEUE)])
      node = create_node(node_repr, self.op_pool, [in_que], [])
      self.assertFalse(node.initialize())
  
      node_info = copy.deepcopy(self.node_info)
      node_info["op_info"]["type"] = "unkown"
      node_repr = NodeRepr(uid="test_node", **node_info)
      in_que = DataQueue([("num", ColumnType.QUEUE)])
      node = create_node(node_repr, self.op_pool, [in_que], [])
      self.assertFalse(node.initialize())
  
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 13 for calling the TestMapNode obj's underlying member method code with example usage: obj.test_create_op_failed() without return types