New patch:
http://jamesboston.ca/patches/patch112808.txt
I've figured out how to move my unit test into the tree along with a few simple programs that are used by the test. There is an existing directory for unit tests at xpcom/tests/unit and that's where test_nsIProcess.js can now be found. I also created a new directory, xpcom/tests/simple-programs, that contains the source for, well, simple programs. When the tree is built, they get compiled into executables that I can use to test the functionality of nsIProcess. Links to the executables appear in obj-ff/dist/bin which is convenient for me.
Now it's just a matter of polishing the actual unit test code to make sure it covers every edge case. At the moment, it simply runs through all the functions to see if the return codes make sense.
