public async Task UpdateOperationAsync_UpsertTheItemInOperation_AndDeletesTheError()
        {
            var client = new MobileServiceClient("http://www.test.com");
            var store = new MobileServiceLocalStoreMock();
            var context = new MobileServiceSyncContext(client);
            await context.InitializeAsync(store);

            string operationId = "abc";
            string itemId = "def";
            string tableName = "test";

            var item = new JObject() { { "id", itemId }, { "name", "unknown" } };

            store.TableMap[MobileServiceLocalSystemTables.SyncErrors] = new Dictionary<string, JObject>() { { operationId, new JObject() { { "id", operationId }, { "version", 1 } } } };
            store.TableMap[MobileServiceLocalSystemTables.OperationQueue].Add(operationId, new JObject() { { "id", operationId }, { "version", 1 }, { "item", item.ToString() }, { "kind", (int)MobileServiceTableOperationKind.Delete } });

            // operation exists before cancel
            Assert.IsNotNull(await store.LookupAsync(MobileServiceLocalSystemTables.OperationQueue, operationId));
            // item does not exist
            Assert.IsNull(await store.LookupAsync(tableName, itemId));

            var error = new MobileServiceTableOperationError(operationId,
                                                             1,
                                                             MobileServiceTableOperationKind.Delete,
                                                             HttpStatusCode.PreconditionFailed,
                                                             tableName,
                                                             item: new JObject() { { "id", itemId } },
                                                             rawResult: "{}",
                                                             result: new JObject());
            var item2 = new JObject() { { "id", itemId }, { "name", "unknown" }, { "version", 2 } };
            await context.UpdateOperationAsync(error, item2);

            var operation = await store.LookupAsync(MobileServiceLocalSystemTables.OperationQueue, operationId);
            // operation is updated
            Assert.IsNotNull(operation);
            // error is deleted
            Assert.IsNull(await store.LookupAsync(MobileServiceLocalSystemTables.SyncErrors, operationId));

            Assert.AreEqual(operation.GetValue("item").ToString(), item2.ToString(Formatting.None));
        }
        private async Task UpdateOperationAsync_ConflictOperation_WithNotificationsEnabled_UsesTheCorrectStoreSource()
        {                        
            var client = new MobileServiceClient("http://www.test.com");
            var store = new MobileServiceLocalStoreMock();
            var context = new MobileServiceSyncContext(client);
            await context.InitializeAsync(store, StoreTrackingOptions.NotifyLocalConflictResolutionOperations);
            var manualResetEvent = new ManualResetEventSlim();

            string operationId = "abc";
            string itemId = "def";
            string tableName = "test";


            store.TableMap[MobileServiceLocalSystemTables.SyncErrors] = new Dictionary<string, JObject>() { { operationId, new JObject() { { "id", operationId }, { "version", 1 } } } };
            store.TableMap[MobileServiceLocalSystemTables.OperationQueue].Add(operationId, new JObject() { { "id", operationId }, { "version", 1 } });
            store.TableMap.Add(tableName, new Dictionary<string, JObject>() { { itemId, new JObject() } });

            // operation exists before cancel
            Assert.IsNotNull(await store.LookupAsync(MobileServiceLocalSystemTables.OperationQueue, operationId));
            // item exists before upsert
            Assert.IsNotNull(await store.LookupAsync(tableName, itemId));


            var error = new MobileServiceTableOperationError(operationId,
                                                             1,
                                                             MobileServiceTableOperationKind.Update,
                                                             HttpStatusCode.Conflict,
                                                             tableName,
                                                             item: new JObject() { { "id", itemId } },
                                                             rawResult: "{}",
                                                             result: new JObject());
            var item = new JObject() { { "id", itemId }, { "name", "unknown" } };                       
            
            bool sourceIsLocalConflict = false;
            IDisposable subscription = client.EventManager.Subscribe<StoreOperationCompletedEvent>(o =>
            {
                sourceIsLocalConflict = o.Operation.Source == StoreOperationSource.LocalConflictResolution;
                manualResetEvent.Set();
            });

            await context.UpdateOperationAsync(error, item);

            bool resetEventSignaled = manualResetEvent.Wait(1000);
            subscription.Dispose();

            Assert.IsTrue(resetEventSignaled);
            Assert.IsTrue(sourceIsLocalConflict);
        }
        public async Task UpdateOperationAsync_UpsertsTheItemInLocalStore_AndDeletesTheError_AndUpdatesTheOperation()
        {
            var client = new MobileServiceClient("http://www.test.com");
            var store = new MobileServiceLocalStoreMock();
            var context = new MobileServiceSyncContext(client);
            await context.InitializeAsync(store);

            string operationId = "abc";
            string itemId = "def";
            string tableName = "test";


            store.TableMap[MobileServiceLocalSystemTables.SyncErrors] = new Dictionary<string, JObject>() { { operationId, new JObject() { { "id", operationId }, { "version", 1 } } } };
            store.TableMap[MobileServiceLocalSystemTables.OperationQueue].Add(operationId, new JObject() { { "id", operationId }, { "version", 1 } });
            store.TableMap.Add(tableName, new Dictionary<string, JObject>() { { itemId, new JObject() } });

            // operation exists before cancel
            Assert.IsNotNull(await store.LookupAsync(MobileServiceLocalSystemTables.OperationQueue, operationId));
            // item exists before upsert
            Assert.IsNotNull(await store.LookupAsync(tableName, itemId));

            var error = new MobileServiceTableOperationError(operationId,
                                                             1,
                                                             MobileServiceTableOperationKind.Update,
                                                             HttpStatusCode.Conflict,
                                                             tableName,
                                                             item: new JObject() { { "id", itemId } },
                                                             rawResult: "{}",
                                                             result: new JObject());

            var item = new JObject() { { "id", itemId }, { "name", "unknown" } };
            await context.UpdateOperationAsync(error, item);

            // operation is updated
            Assert.IsNotNull(await store.LookupAsync(MobileServiceLocalSystemTables.OperationQueue, operationId));
            // error is deleted
            Assert.IsNull(await store.LookupAsync(MobileServiceLocalSystemTables.SyncErrors, operationId));

            JObject upserted = await store.LookupAsync(tableName, itemId);
            // item is upserted
            Assert.IsNotNull(upserted);
            Assert.AreEqual(item, upserted);
        }