albahari / uncapsulator Goto Github PK

I use Uncapsulator for testing private members.
in one of my use cases I saw this error:
Unable to cast object of type 'LINQPad.Uncapsulator.Uncapsulator' to type 'System.Runtime.CompilerServices.INotifyCompletion'

run this code in Linqpad to see the error:

await new RssService().Uncapsulate().IngestSubEpisodes(new List { new Episode { Id = "1" } });

public class RssService
{
private static readonly SemaphoreLocker _locker = new SemaphoreLocker();
private readonly DatabaseSimulator _context = new DatabaseSimulator();

protected async Task IngestSubEpisodes(List<Episode> episodes)
{
	var options = new ParallelOptions { MaxDegreeOfParallelism = 1 };
	await Parallel.ForEachAsync(episodes, options, async (episode, token) =>
	{
		var subEpisodes = await _locker.LockAsync(async () =>
		{
			return await _context.SubEpisodes;
		});
	});
}

}

public class Episode { public string Id; }
public class SubEpisode { public string Id; public string EpisodeId; }

public class SemaphoreLocker
{
private readonly SemaphoreSlim _semaphore = new SemaphoreSlim(1, 1);

public async Task<T> LockAsync<T>(Func<Task<T>> worker)
{
	await _semaphore.WaitAsync();
	try
	{
		return await worker();
	}
	finally
	{
		_semaphore.Release();
	}
}

}

public class DatabaseSimulator
{
public Task<List> SubEpisodes
{
get
{
return Task.FromResult(new List { new SubEpisode { Id = "1" } });
}
}
}