Exception handling

[UnkindPartition]

Hey @nomeata. I'm looking at tasty-hunit code in connection with the policy that you proposed. In d1d417c you said that HUnit sas already catching exceptions. But in fact it only catches HUnitFailure exceptions (https://github.com/feuerbach/tasty/blob/master/hunit/Test/Tasty/HUnit.hs#L52). Doesn't that contradict your policy?

On the other hand, catching all the exceptions would interfere with timeout handling code, as explained in the comment. (In fact, your changes to smallcheck & quickcheck probably interfere with it already, I just didn't realize that.)

[nomeata]

Hmm; maybe I mis-read the code? Or maybe I was looking at the exception catching code in HUnit, and did not realize you are not using that?

Why exactly would it interfere with timeout-handling? (The comment only says that it interferes, not why.)

[UnkindPartition]

Because System.Timeout.timeout throws an exception, but will be unable to catch it back. The exception will still abort the computation, but the message will be different.