code: def testGetAttr(self):
      base = MPI.Get_address(self.memory)
      size = len(self.memory)
      unit = 1
      self.assertEqual(size, self.WIN.Get_attr(MPI.WIN_SIZE))
      self.assertEqual(unit, self.WIN.Get_attr(MPI.WIN_DISP_UNIT))
      self.assertEqual(base, self.WIN.Get_attr(MPI.WIN_BASE))
  
imports: from mpi4py import MPI
  import mpiunittest
  import sys
label_desc: Use image node_id 1 for calling the BaseTestWin obj's underlying member method code with example usage: obj.testGetAttr() without return types