HoursGroupDTO hoursGroupDTO = new HoursGroupDTO();
hoursGroupDTO.resourceType = ResourceEnumDTO.WORKER;
orderLineDTO.hoursGroups.add(hoursGroupDTO);
orderDTO.children.add(orderLineDTO);
OrderListDTO orderListDTO = createOrderListDTO(orderDTO);
List<InstanceConstraintViolationsDTO> instanceConstraintViolationsList = orderElementService
.addOrders(orderListDTO).instanceConstraintViolationsList;
assertThat(instanceConstraintViolationsList.size(), equalTo(1));
List<ConstraintViolationDTO> constraintViolations = instanceConstraintViolationsList