Hi,
Is there any better solution to organize tests in Haskell?
(Disclaimer: I'm the maintainer of Hspec ;) If you use Hspec[1] for testing, you do not have to assemble your individual tests manually into a test suit; hspec-discover[2] takes care of that. There is no comprehensive user's guide for Hspec yet, but a basic introduction is at [3]. If you have any questions, feel free to join in at #hspec on freenode.
Should I just give up on module encapsulation, or should I only test functions exposed by the module and don't worry about internal functions?
You can do it with CPP. Say, if you have a module Foo, with functions foo, bar and baz, where baz is not part of the public interface, then the export list becomes: {-# LANGUAGE CPP #-} module Foo where ( foo , bar #ifdef TEST , baz #endif ) You then run tests with -DTEST. To make development easier you can add a .ghci file to your project, with: echo ':set -DTEST -isrc -itest' > .ghci And of course you need to add cpp-options: -DTEST to your Cabal test-suite section. Cheers, Simon [1] http://hackage.haskell.org/package/hspec [2] https://github.com/hspec/hspec/tree/master/hspec-discover#automatically-disc... [3] http://hspec.github.com/