Microsoft.AspNet.SignalR.SqlServer.ObservableDbOperation.Dispose C# (CSharp) Method

        public void Dispose()
        {
            lock (_stopLocker)
            {
                _disposing = true;
            }

            if (_notificationState != NotificationState.Disabled)
            {
                try
                {
                    SqlDependency.Stop(ConnectionString);
                }
                catch (Exception) { }
            }

            if (Interlocked.Read(ref _notificationState) == NotificationState.ProcessingUpdates)
            {
                _stopHandle.Wait();
            }
            _stopHandle.Dispose();
        }

        public void CallsOnErrorOnException()
        {
            // Arrange
            var mre = new ManualResetEventSlim(false);
            var onErrorCalled = false;
            var dbProviderFactory = new MockDbProviderFactory();
            var dbBehavior = new Mock<IDbBehavior>();
            var logger = new Mock<ILogger>();
            dbBehavior.Setup(db => db.UpdateLoopRetryDelays).Returns(_defaultRetryDelays);
            dbBehavior.Setup(db => db.StartSqlDependencyListener()).Returns(false);
            dbProviderFactory.MockDataReader.Setup(r => r.Read()).Throws(new ApplicationException("test"));
            var operation = new ObservableDbOperation("test", "test", logger.Object, dbProviderFactory, dbBehavior.Object);
            operation.Faulted += _ =>
            {
                onErrorCalled = true;
                mre.Set();
            };

            // Act
            ThreadPool.QueueUserWorkItem(_ => operation.ExecuteReaderWithUpdates((record, o) => { }));
            mre.Wait();
            operation.Dispose();

            // Assert
            Assert.True(onErrorCalled);
        }