private static void ExecuteUpdate(DSPResource resource, int id, TestWebRequest baseRequest, string httpMethod, string preferHeader, bool useBatch, DSPResourceSerializerFormat payloadFormat) { string payload = DSPResourceSerializer.WriteEntity(resource, payloadFormat); bool isPost = httpMethod == "POST"; bool expectedReturnContent = preferHeader == "return=representation" || isPost && preferHeader == null; string uriSuffix = isPost ? String.Empty : String.Format("({0})", id); TestWebRequest request = useBatch ? new InMemoryWebRequest() : baseRequest; request.RequestUriString = String.Format("/{0}s{1}", resource.ResourceType.Name, uriSuffix); request.HttpMethod = httpMethod; request.RequestVersion = "4.0;"; request.RequestMaxVersion = "4.0;"; request.RequestHeaders["Prefer"] = preferHeader; request.Accept = payloadFormat == DSPResourceSerializerFormat.Atom ? "application/atom+xml,application/xml" : UnitTestsUtil.JsonLightMimeType; request.RequestContentType = "application/atom+xml"; request.SetRequestStreamAsText(payload); if (useBatch) { var batchRequest = new BatchWebRequest(); var changeset = new BatchWebRequest.Changeset(); changeset.Parts.Add((InMemoryWebRequest)request); batchRequest.Changesets.Add(changeset); batchRequest.SendRequest(baseRequest); Assert.IsTrue(UnitTestsUtil.IsSuccessStatusCode(baseRequest.ResponseStatusCode), "Unexpected error occurred on batch."); } else { request.SendRequest(); } Assert.IsTrue(UnitTestsUtil.IsSuccessStatusCode(request.ResponseStatusCode), "Unexpected error occurred when sending the request."); if (expectedReturnContent) { // If the request is expected to return content, verify there were no instream errors Exception e = request.ParseResponseInStreamError(); string errorMessage = e != null ? e.Message : string.Empty; Assert.IsNull(e, "Expected no exception, but got the following error", errorMessage); } }