/**
* @test
*/
public function get_all_participants_check()
{
$obj = new Conversation();
$msg1 = new Message();
$msg1->setSender(5);
$msg2 = new Message();
$msg2->setSender(8);
$msg3 = new Message();
$msg3->setSender(11);
$msg4 = new Message();
$msg4->setSender(11);
$obj->addMessage($msg1);
$participants = $obj->getAllParticipants();
$this->assertEquals(1, sizeof($participants));
$this->assertEquals(['5' => 0], array_flip($participants));
$obj->addMessage($msg2);
$participants = $obj->getAllParticipants();
$this->assertEquals(2, sizeof($participants));
$this->assertEquals(['5' => 0, '8' => 1], array_flip($participants));
$obj->addMessage($msg3);
$participants = $obj->getAllParticipants();
$this->assertEquals(3, sizeof($participants));
$this->assertEquals(['5' => 0, '8' => 1, '11' => 2], array_flip($participants));
$obj->addMessage($msg4);
$participants = $obj->getAllParticipants();
$this->assertEquals(3, sizeof($participants));
$this->assertEquals(['5' => 0, '8' => 1, '11' => 2], array_flip($participants));
}
