Test Hx-Trigger header

[yagodaoud]

I've got this simple controller route that returns a fragment with a trigger so my front-end can handle the outcome of the request:

    @HxRequest
    @HxTrigger("historyCreated")
    @PostMapping
    public ModelAndView createHistory(@ModelAttribute EmployeeHistoryDTO employeeHistoryDTO, Model model) {
        employeeHistoryService.create(employeeHistoryDTO);

        Employee employee = (Employee) employeeService.getById(employeeHistoryDTO.getEmployee().getId());
        model.addAttribute("employee", employee);

        ModelAndView modelAndView = new ModelAndView( "employee-detail :: employeeHistory");
        modelAndView.addAllObjects(model.asMap());

        return modelAndView;
    }

How can i test if it's sending the header correctly with junit? I tried using a response object to see its headers but there's nothing there.

[checketts]

Are you using Spring and MockMVC in your test? There are tests in this codebase that validates headers. I would recommend that approach: https://github.com/wimdeblauwe/htmx-spring-boot/blob/main/htmx-spring-boot/src/test/java/io/github/wimdeblauwe/htmx/spring/boot/mvc/HtmxResponseHandlerMethodArgumentResolverTest.java#L32