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nick8325 / quickcheck

Automatic testing of Haskell programs.
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Printing is slow! #352

Open Rewbert opened 1 year ago

Rewbert commented 1 year ago

Printing is super expensive; I just ran a property where each test case takes very little time. 200 000 tests took 14 seconds, but 200 000 tests with chatty = False took 4 seconds. Such a huge penalty for just printing!

chatty = False is not always ideal, as I am interested in the current progress of my property. There should be some half-way option where I can ask for output, but less. I am just not interested in unperceived updates :) I have a patch ready to go for this, but I document this here so that this is not forgotten.

nick8325 commented 1 year ago

We need an FPS limiter! :D

Rewbert commented 1 year ago

For slow tests the current implementation is fine (execution time is not dominated by printing), but for fast ones we need an FPS limiter! :)

Rewbert commented 4 months ago

In the parallel fork of QC, this is not a problem. The final design might change, but something will be done about this in 2.16.