I ran the behat tests and it appears there are a lot of errors like this:
Invalid get_string() identifier: 'course:noupdateimhelpdesk' or component 'core_role'. Perhaps you are missing $string['course:noupdateimhelpdesk'] = ''; in lang/en/core_role.php?
Invalid get_string() identifier: 'forumtips:myaddinstance' or component 'block_forumtips'. Perhaps you are missing $string['forumtips:myaddinstance'] = ''; in /var/www/html/gs_35/blocks/forumtips/lang/en/block_forumtips.php
Does Moodle test itself? Are these missing strings some kind of artifact of the tests that just need to be ignored?
Is it possible to run the tests and suppress these kinds of debugging errors and only output important errors?