-*- outline -*- 

How can we produce more test cases for libhsync and rproxy to make
sure that it will work properly?  

``The Practice of Programming'' is very good on this.  I want to make
sure we cover all the code at every reasonably level.

Write some ideas here for things that we should test.

* filebufs and mapptrs
  
  write a version of cat(1) using these, and therefore check that
  files are read and written correctly

* mdfour

  read stdin, stdout.  use different read lengths.