new_contents: from mpi4py import rc
  import mpiunittest as unittest
  
  class TestRC(unittest.TestCase):
  
      def testRC1(self):
          rc(initialize   = rc.initialize)
          rc(threaded     = rc.threaded)
          rc(thread_level = rc.thread_level)
          rc(finalize     = rc.finalize)
          rc(fast_reduce  = rc.fast_reduce)
          rc(recv_mprobe  = rc.recv_mprobe)
  
      def testRC2(self):
          kwargs = rc.__dict__.copy()
          rc(**kwargs)
  
      def testRC3(self):
          error = lambda: rc(ABCXYZ=123456)
          self.assertRaises(TypeError, error)
  
  if __name__ == '__main__':
      unittest.main()
  
subject: Add tests for mpi4py.rc function