[Haskell-cafe] In-memory Handle for testing

For testing I want to stub handles, performing all reads and writes in memory (and in process, so no mmap). From looking at the documentation of mkFileHandle[1], I think this should be possible. But it requires some work. Is there already something out there? Cheers, Simon [1] http://hackage.haskell.org/packages/archive/base/4.4.1.0/doc/html/GHC-IO-Han...