This may or may not be useful to anyone here, since it's only practical to run against a licensed version of IAR, but I thought I would post it to help anyone else looking to unit-test their embedded code.
https://github.com/jotux/MSP430-IAR-Uni ... -Utilities
That link has instructions (with an included sample project) on how to unit test your MSP430 code against the IAR simulator. Furthermore, I've included a few helper scripts that will parse the output to a format readable by most CI server (like jenkins) so you can display your test results from every build.
If you have any questions feel free to ask. If you would like to suggest improvements feel free to send pull requests on github.