Testing a call to a rest controller from controller in Spring

I'm using RestTemplate to call a rest controller from a controller, e.g.:

@RequestMapping(method = POST, consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
    @ResponseBody
    public String formForUpload(@RequestParam("file") MultipartFile file) throws Exception {
    final MultiValueMap<String, Object> parts=...;
    restTemplate.postForObject("http://localhost:8080/rest/something",
                        parts, MultipartFile.class);
...
}

How can I unit test that the URL called by the controller is correct. Is there any way to get the path for the rest controller (e.g. using such reflection technique)?

I don't want to run an integration test!