hspec-discover - 2.5.5-1 main

It is a useful convention to have one spec file for each source file. That way
it is straightforward to find the corresponding spec for a given piece of
code. But it requires error prone, and neither challenging nor interesting
boiler plate code. So it should be automated. Hspec provides a solution for
that. It makes creative use of GHC's support for custom preprocessors. The
developer only has to create a test driver that contains a single line.
.
A complete example is at https://github.com/hspec/hspec-example.