I've developed a new enrolment plugin for Moodle to obtain courses and enrolments from an external VOOT server.

The VOOT protocol is described here:
https://wiki.terena.org/display/gn3pjra3/VOOT+-+Cross+Domain+Groupinformation+Exchange
and the latest stable specification for the protocol is the v0.9:
https://wiki.terena.org/display/gn3pjra3/VOOT+specifications

The code developed is available here:
https://github.com/biancini/moodle-enrol_voot
We are using it in a pre-production environment to validate it and eventually to release very soon in production.

The code developed so fare took inspiration from the enrol_database, it does not implement any automated testing (is there a common strategy for testing enrolment plugin which I should adhere to?).