Now that we start running some gecko tests (mochitests) and that we ensured that gaia tests run correctly against mulet (bug 1030679 for UI tests and bug 1016030 for integration tests), we should start looking at how to run them on tbpl. Here is how to run gaia tests with a custom runtime: # gaia marionette - js integration tests: ./bin/gaia-marionette --runtime .../obj-mulet/dist/bin/firefox-bin or RUNTIME=/mnt/desktop/gecko/obj-mulet/dist/bin/firefox-bin make test-integration-test # gaia UI tests: GAIATEST_SKIP_WARNING=1 gaiatest --type=b2g --binary=.../obj-mulet/dist/firefox/firefox --profile=.../gaia/profile-mulet-uitests/ --app-arg="-chrome" --app-arg="chrome://b2g/content/shell.html" --restart --testvars=gaiatest/testvars.json --html-output=results.html gaiatest/tests/tbpl-manifest.ini We haven't looked at gaia unit tests against mulet yet.