public function testSendPacketBroadcast()
 {
     $packet = new Packet('packet', Packet::BROADCAST);
     $connection = $this->getMockBuilder('\\Thruster\\Components\\InterProcessCommunication\\Connection')->getMock();
     $this->connectionManager->addConnection($connection);
     $connection->expects($this->once())->method('sendPacket')->with($packet);
     $this->connectionManager->sendPacket($packet);
 }