new_contents: from mpi4py import MPI
  
  import pytest
  
  @pytest.mark.parallel(nprocs=2)
  def test_hello_mpi():
      size = MPI.COMM_WORLD.Get_size()
      rank = MPI.COMM_WORLD.Get_rank()
      name = MPI.Get_processor_name()
  
      print("Hello, World! I am rank %d of %d on %s" % (rank, size, name), flush=True)
  
subject: Add draft test_mpi.py