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Add test_randomly - #19
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For exercising Patchwork with random inputs. Implementation notes: - I don't know if the code involving threading is correct. - Leave many TODOs, because doing them would good, but isn't crucial for the random test to be useful. - Some identifiers have a trailing underscore (hypothesis_) in order to avoid shadowing global variables. - One might think that starting a thread for every act() is slow, but on my machine, which is old, it increases the running time of the random test by only a few seconds (7 s → 8-12 s). - Someone in https://stackoverflow.com/questions/2829329/ advises to catch BaseException (instead of Exception) and re-raise in (Terminable)Thread.join. Don't do that, because a SystemExit in a child thread shouldn't terminate the parent, in my opinion. - Custom exception types are good. Cf. https://www.youtube.com/watch?v=wf-BqAjZb8M.
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For exercising Patchwork with random inputs.
Implementation notes:
I don't know if the code involving threading is correct.
Leave many TODOs, because doing them would good, but isn't crucial for
the random test to be useful.
Some identifiers have a trailing underscore (hypothesis_) in order to
avoid shadowing global variables.
One might think that starting a thread for every act() is slow, but on
my machine, which is old, it increases the running time of the random
test by only a few seconds (7 s → 8-12 s).
Someone in https://stackoverflow.com/questions/2829329/ advises to
catch BaseException (instead of Exception) and re-raise in
(Terminable)Thread.join. Don't do that, because a SystemExit in a
child thread shouldn't terminate the parent, in my opinion.
Custom exception types are good. Cf.
https://www.youtube.com/watch?v=wf-BqAjZb8M.