public async Task TestThatPostUpdateWithPartialValidJson()
{
//send request to the server to /Update/id/1
var obj = new { Specialization = "TestSpecialization" };
HttpContent content = new StringContent(JsonConvert.SerializeObject(obj));
content.Headers.ContentType.MediaType = MediaTypeNames.Application.Json;
HttpResponseMessage response = await _client.PostAsync(urlupdateid, content);
Assert.AreEqual(HttpStatusCode.OK, response.StatusCode, "Sorry, the response status is not OK");
//debug
var message = await response.Content.ReadAsStringAsync();
//verify the patched XML with previous XML state
var xdoc1 = XDocument.Load("./Data/Data[1].xml");
var changeddict = Comparisons.CompareXMLsForChanges(xdoc, xdoc1, "1");
Assert.IsTrue(changeddict.ContainsKey("Specialization"), "No changed data");
}