@Test(expected = IllegalArgumentException.class)
public void testDistanceCmdLine2PartyWithNoInputY() throws Exception {

  DistanceDemo.main(
      new String[]{"-i", "1", "-p", "1:localhost:8081", "-p", "2:localhost:8082",
          "-p", "3:localhost:8083", "-s", "dummyArithmetic", "-x", "20"});
  fail();
}