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Adding to the output though... (Score:1)
I've been considering how well this could map to perl - whether a test failure should save the stack so tools could know exactly what was around. I'm not sure whether Perl is powerful enough to ever make use of this information. ATM, it's speculation.
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Re: (Score:2)
You know, you might want to chat with Andy Armstrong. He's been toying with the idea of creating a reversible debugger for Perl. As I understand it, it's similar in concept to how video works: occasionally save the state (a "key frame") and save then a bunch of diffs until you need to save the state again. With that, you could just note the "time" of the test failure and persist its state. You could then reverse to a previously known state, change parameters, run things forward again, etc.