code: def test_map_async(self):
      args = list(range(10))
      self.assertEqual(
          self.pool.map_async(sqr, args).get(), list(map(sqr, args))
      )
      args = list(range(100))
      self.assertEqual(
          self.pool.map_async(sqr, args, chunksize=20).get(),
          list(map(sqr, args)),
      )
  
imports: from mpi4py import MPI
  import mpi4py.util.pool
  import concurrent.futures
  import itertools
  import functools
  import warnings
  import unittest
  import time
  import sys
  import os
label_desc: Use image node_id 13 for calling the BaseTestPool obj's underlying member method code with example usage: obj.test_map_async() without return types