Covered by unit tests in this issue and in MDL-76708 (there is a lot of overlap between these issues) Environment setup Setup the environment using the following link:  https://github.com/mattporritt/moodle-docker (Feel free to reach out for any issues) Make sure you have access to the following information: Element web URL (e.g. https://element:8081) Home server URL (e.g. https://synapse:8008 ) Mock server URL (e.g. http://localhost:8001 ) -> Symfony home page Access token, generated using the same account used to login to element client Refresh token (optional) Run the ad-hoc task once all setup is completed and moodle is installed   Note There is a step in the environment setup that allows the use of Keycloak to access both Moodle and Matrix with the same oAuth account. This can be handy if you are trying to gain access to Element as a non-admin in this test. 1. Site admin setting Login to Moodle as admin Navigate to  Site admin > Development > Experimental settings  and enable 'Enable communication subsystem' Navigate to  Site admin > Plugins > Communication > Manage communication providers and ensure 'Matrix' is enabled. Navigate to  Site admin > Plugins > Communication > Matrix Add the access token (available from the environment setup) Add the refresh token if available, otherwise paste the access token Add the element server url (available from the environment setup) Save your changes Navigate to  Site admin > HTTP Security Add the Synapse port to 'cURL allowed ports list' (e.g. 8008) 2. Creating a course with a new room Create a new course as Admin Add all the required information in the form Go to the communication section of the form Set communication provider to 'Matrix' Enter a name for the provider room Save changes Run the ad-hoc task or the cron itself Go to https://element:8081 Verify that a new room is created (same as the one you specified) 3. Enrol user Make sure you have some un-enrolled users. (If you have some Keycloak users, log in to Moodle with these accounts to get them in the system) Go back to the created course Go to Participants and click on "Enrol Users" and add some users Set the "Assign role" to "Student" then press "Enrol users" Run the ad-hoc task or the cron itself Go to https://element:8081 Choose the room that was just created in #2 Verify that new students have been added to the room. If you are having trouble accessing the Matrix room as a student, log into Matrix as the Admin and navigate to the room. You should see 'User X joined the room', etc. 4. Unenrol user Go back to the created course Go to Participants and click on "Trash icon" to unenrol a user from the course When the popup is shown, click on "Unenrol" Run the ad-hoc task or the cron itself Go to https://element:8081 Click on the room where the users were removed Verify that the targeted users have been removed from the room 5. Disabling the communication provider Go back to the created course Make sure you have a couple of users enrolled in your course Make sure they are members of a Matrix room by either observing the feed in your room as an Admin, or by checking individual access as a student. Edit your course settings and go to the 'Communication' section Set 'Provider' to 'None' Save changes Run the ad-hoc task or the cron itself Verify that the students have lost access to the room, but the admin still has access. Edit the course settings again and change the provider back to 'Matrix' Save changes Run the ad-hoc task or the cron itself Verify that the students have regained access to the room. 6. Disabling enrolment method Make sure you have a course with some users who have access to a Matrix room still. Go back to the created course Click on 'Participants' Choose 'Enrolment methods' from the dropdown. Click the 'eye' icon next to 'Manual enrolments' Run the ad-hoc task or the cron itself Verify that the students have lost access to the room, but the admin still has access. Re-enable the enrolment method by clicking the 'eye' icon again. Run the ad-hoc task or the cron itself Verify that the students have regained access to the room. 6. Suspending a user enrolment Make sure you have a course with some users who have access to a Matrix room still. Go back to the created course Click on 'Participants' Click the 'cog' icon next to one of the students Choose 'Suspended' from the Status dropdown and click 'Save changes'. Run the ad-hoc task or the cron itself Verify that the student has lost access to the room. Undo the enrolment suspension by clicking the 'cog' icon again and choosing 'Active'. Click 'Save changes'. Run the ad-hoc task or the cron itself Verify that the student has regained access to the room. 6. Deleting a user enrolment Make sure you have a course with some users who have access to a Matrix room still. Go back to the created course Click on 'Participants' Click the 'trash can' icon next to one of the students Confirm by clicking 'Unenrol' Run the ad-hoc task or the cron itself Verify that the student has lost access to the room. 6. Suspending a user account Make sure you have a course with some users who have access to a Matrix room still. Navigate to Site admin->Browse list of users Suspend/disable one of the students account by clicking the 'eye' icon Run the ad-hoc task or the cron itself Verify that the student has lost access to the room. Re-enable the student account by clicking the 'eye' icon again. Run the ad-hoc task or the cron itself Verify that the student has regained access to the room. 7. Deleting a user account Make sure you have a course with some users who have access to a Matrix room still. Navigate to Site admin->Browse list of users Delete one of the students account by clicking the 'trash can' icon Run the ad-hoc task or the cron itself Verify that the student has lost access to the room. 6. Deleting an enrolment method Make sure you have a course with some users who have access to a Matrix room still. Go back to the created course Click on 'Participants' Choose 'Enrolment methods' from the dropdown. Click the 'trash can' icon next to 'Manual enrolments' Run the ad-hoc task or the cron itself Verify that the students have lost access to the room, but the admin still has access. 8. Unit testing (with mock server) Run the command "docker exec -it <webserver_container_id> bash Initialise phpunit php admin/tool/phpunit/cli/init.php     Run the following testsuite: vendor/bin/phpunit --testsuite communication_matrix_testsuite Confirm the tests ran successfully