Method capture

Can you check to see if minitest's `capture_io` will solve the problem?

  https://github.com/seattlerb/minitest/blob/master/lib/minitest/unit.rb#L447-460

If not, can you write a small example (outside rails) to demonstrate the
problem? This sounds like something we might want to push up to
minitest if possible.

Thanks Aaron for reply I write a gist for these cases, here you are https://gist.github.com/3694068

The new method, captures all descriptors, but I’m not sure about replacement original method.

Dmitry,

I commented in your gist to use the StringIO instead of Tempfile to avoid IO on disk.

Thank you, let’s discuss it in PR https://github.com/seattlerb/minitest/pull/161

I think it will be more comfortable for us.