1) Mozbase. Our efforts in our spare time is to refactor our test harnesses within Mozilla to share common code where possible, we call it mozbase. I recommend doing a git clone of mozbase and getting it installed on your system: git clone email@example.com:mozilla/mozbase.git
2) Talos. Next is to pick up a test harness. We have been focusing on talos. Mostly because you don’t have to pull the entire mozilla-central tree, do hour long builds, and really because the talos code base is in need of some serious updating. To get talos, you need to clone it: hg clone http://hg.mozilla.org/build/talos
3) Configure Talos. Talos is run in 2 steps right now. A configuration step and a execution step. The configuration step requires a path to firefox.exe as well as an active test (I use ts to keep it simple) is pretty easy: “python PerfConfigurator.py –develop -a ts -e <path>/firefox.exe –output mytest.yml”.
4) Run Talos. this step is easy. Make sure you don’t have another instance of firefox.exe running on the computer and then run: “python run_tests.py -d -n mytest.yml”.
5) Take a look at some of these bugs that we have which are related to mozbase and/or talos: http://bit.ly/tZHs3G
While this isn’t exhaustive or a perfect guide for how to work on the perfect bug in an hour or less, these 5 steps should get you setup to work on basic Mozilla code and start fixing bugs! Pop into #ateam on irc.mozilla.org and ask some questions.
Now back to the other PI(e) that I always talk about!