Apache::Test for online debugging

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Under mod_perl 1, I used the following simple debugging
framework:
 1. apache calls DebugClient
 2. DebugClient connects to DebugServer (Unix socket)
 3. DebugServer calls the request handler with a fake
Apache object (Apache::FakeRequest) and returns the
response to the DebugClient

If an error occured, the DebugClient displayed the error
instead of the response. When a source file changed, the
DebugServer did the necessary preprocessing of the file and
restarted itself.
This way, I could easily debug my request handler. When I
modified a file and rerun the request, I either saw the new
response or a nicely displayed error message. I did not
have to restart the apache webserver or look for the error
in the log files.

Does a similar framework exist in mod_perl 2?
I have heard about Apache::Test. Is this a solution?

Regards,
Thomas