assertNotNull(user);
UserMod userMod = new UserMod();
userMod.setPassword("password321");
response = noContentService.update(user.getId(), userMod);
assertEquals(Response.Status.NO_CONTENT.getStatusCode(), response.getStatus());
assertEquals(Preference.RETURN_NO_CONTENT.toString(), response.getHeaderString(RESTHeaders.PREFERENCE_APPLIED));
assertEquals(StringUtils.EMPTY, IOUtils.toString((InputStream) response.getEntity()));
response = noContentService.delete(user.getId());