code: def testMemory(self):
      memory = self.WIN.tomemory()
      self.assertEqual(memory.format, "B")
      base = MPI.Get_address(memory)
      size = len(memory)
      self.assertEqual(base, 0)
      self.assertEqual(size, 0)
  
imports: from mpi4py import MPI
  import mpiunittest
  import sys
label_desc: Use image node_id 4 for calling the BaseTestWinCreateDynamic obj's underlying member method code with example usage: obj.testMemory() without return types