This package consists of several modules, that give a pure specification of functions in the IO monad:
Test.IOSpec.Fork: a pure specification of
Test.IOSpec.IORef: a pure specification of most functions that create and manipulate on
Test.IOSpec.MVar: a pure specification of most functions that create and manipulate and
Test.IOSpec.STM: a pure specification of
Test.IOSpec.Teletype: a pure specification of
putChar, and several related Prelude functions.
Besides these modules containing the specifications, there are a few other important modules:
Test.IOSpec.Types: defines the
IOSpectype and several amenities.
Test.IOSpec.VirtualMachine: defines a virtual machine on which to execute pure specifications.
Test.IOSpec.Surrogate: a drop-in replacement for the other modules. Import this and recompile your code once you've finished testing and debugging.
There are several well-documented examples included with the source distribution.