/**
  * @test
  */
 public function get_all_messages()
 {
     $obj = new Conversation();
     $msg1 = new Message();
     $msg1->setSender(5);
     $msg2 = new Message();
     $msg2->setSender(8);
     $msg3 = new Message();
     $msg3->setSender(8);
     $obj->addMessage($msg1);
     $obj->addMessage($msg2);
     $obj->addMessage($msg3);
     $msgs = $obj->getAllMessages();
     $this->assertEquals(3, $msgs->count());
 }