code: def testMinMax(self):
      x = [1]
      y = [1]
      res = MPI.MIN(x, y)
      self.assertEqual(res, x)
      res = MPI.MAX(x, y)
      self.assertEqual(res, x)
  
imports: from mpi4py import MPI
  import mpiunittest
label_desc: Use image node_id 6 for calling the TestOp obj's underlying member method code with example usage: obj.testMinMax() without return types