/**
  * @test
  */
 public function get_other_participant_check()
 {
     $obj = new Conversation();
     $msg1 = new Message();
     $msg1->setSender(5);
     $msg2 = new Message();
     $msg2->setSender(8);
     $obj->addMessage($msg1);
     $obj->addMessage($msg2);
     $this->assertEquals(8, $obj->getTheOtherParticipant(5));
 }