The official Autoptimize repo on GitHub can be found here.
- Install wp test suite by running
bin/install-wp-tests.sh - Run
composer install - Now you should be able to run either
composer testorphpunit
Have a read through tests/test-ao.php and tests/bootstrap.php if you'd like to know more.
Ideally, this should be switched to a more modern setup using https://github.com/Brain-WP/BrainMonkey -- once the AO codebase allows for easier testing. One day, maybe.