gecko-dev/testing/marionette/doc/Patches.md

Submitting patches

You can submit patches by uploading .diff files to Bugzilla. Ask for review from ato, automatedtester, or whimboo.

Once you have contributed a couple of patches, we are happy to sponsor you in becoming a Mozilla committer. When you have been granted commit access level 1 you will have permission to use the Firefox CI to trigger your own “try runs” to test your changes.

This is a good try syntax to use when testing Marionette changes:

-b do -p linux,linux64,macosx64,win64,android-api-16 -u marionette-e10s,marionette-headless-e10s,xpcshell,web-platform-tests,firefox-ui-functional -t none