public void Put_Candidate_OK(int id, string testname)
{
var _controller = new CandidatesController(new DummyRepositoryFacade());
_controller.Request = new HttpRequestMessage();
_controller.Configuration = new HttpConfiguration();
var getResult = _controller.Get(id);
var jsonGetResult = getResult as JsonResult <CandidateDTO>;
var candidateDto = jsonGetResult.Content;
candidateDto.FirstName = testname;
var putResult = _controller.Put(id, candidateDto);
var jsonPutResult = getResult as JsonResult <CandidateDTO>;
var candidateAfterPut = jsonPutResult.Content;
Assert.AreEqual(testname, candidateAfterPut.FirstName);
}