Test 1 run phpunit enrol/self/tests/externallib_test.php run phpunit enrol/tests/externallib_test.php Test 2 Create course with: Self enrolment method without password self enrolment method with password self enrolment method which is disabled. Enable web services (Site administration ► Advanced features) Enable rest protocol (Site administration ► Plugins ► Web services ► Manage protocols) Add external service (Site administration ► Plugins ► Web services ► External services) Add following functions to above service (Site administration ► Plugins ► Web services ► External services ► Functions) core_enrol_get_course_enrolment_methods enrol_self_get_instance_info Create token for user which will be used in webservice client (Site administration ► Plugins ► Web services ► Manage tokens) With core_enrol_get_course_enrolment_methods webservice make sure you get information about two self-enrolment methods (which are enabled) First one (without password) should return wsfunction value null Second one (with password) should contain wsfunction = enrol_self_get_instance_info Passing instanceid of self_enrolment instance to enrol_self_get_instance_info should return For instance without password it should have 'enrolpassword' value as null For instance with (wsfunction) with password, you should see 'enrolpassword' = 'Enrolment key' If you pass instanceid of disabled self-enrolment then it should have status='Enrolment is disabled or inactive'