public function testGetTravellers()
 {
     /** @var Level $level */
     $level = Level::find(1);
     $travellers = TravellerFactory::getTravellers($level->id);
     $this->assertEquals($level->getTotalTravellers(), count($travellers), "Nr of travellersData is equal");
     foreach ($travellers as $traveller) {
         $this->assertNotEquals($traveller->getDemandedFloor(), $traveller->getOriginalFloor(), "Traveller goes to different floor");
         $this->assertLessThanOrEqual($level->nr_of_floors, $traveller->getDemandedFloor());
     }
     $travellers = TravellerFactory::getTravellers($level->id, 500);
     foreach ($travellers as $traveller) {
         $this->assertGreaterThanOrEqual(500, $traveller->getCheckInTime(), "Traveller check in time is after 500");
     }
 }
<?php

namespace Prince\WWW;

require_once __DIR__ . '/../../vendor/autoload.php';
use RobinTheb\Prince\Travellers\TravellerFactory;
$levelId = $_POST['levelId'];
$currentTime = $_POST['currentTime'];
print json_encode(TravellerFactory::getTravellers($levelId, $currentTime));