WebSocketController { @MessageMapping("vehicle") void addVehicle() { vehicleService.createVehicle(); } @Autowired  WebSocketController(
            RouteListener routeListener,
            RegionService regionService,
            LocationService locationService,
            VehicleService vehicleService,
            DemoService demoService,
            ApplicationEventPublisher eventPublisher);   }
@Test void addVehicle() { webSocketController.addVehicle(); verify(vehicleService).createVehicle(); }