code: def testAttributes(self):
      base, size, _ = self.WIN.attrs
      self.assertEqual(base, 0)
      self.assertEqual(size, 0)
  
imports: from mpi4py import MPI
  import mpiunittest
  import sys
label_desc: Use image node_id 5 for calling the BaseTestWinCreateDynamic obj's underlying member method code with example usage: obj.testAttributes() without return types