message: fix make test world
diff: @@ -92,9 +92,10 @@ WorldPtr bark::world::tests::make_test_world(
  WorldPtr world(new World(params));
  world->AddAgent(agent1);
  - if (num_other_agents == 1) {
  + if (num_other_agents >= 1) {
  world->AddAgent(agent2);
  - } else if (num_other_agents == 2) {
  + }
  + if (num_other_agents >= 2) {
  world->AddAgent(agent3);
  }
  world->UpdateAgentRTree();
  