Pre-requisites: We need the ability to quickly queue adhoc tasks. install tool_testtasks to generate adhoc tasks for use in testing   git clone https: //github.com/catalyst/moodle-tool_testtasks.git admin/tool/testtasks * Proceed with the upgrade.   Test adhoc task runs Use tool testtasks to queue up and adhoc task   php admin/tool/testtasks/cli/queue_adhoc_tasks.php -n 1 * Open a connection to the database through whatever preferred tool. Run this query to view the task record just created.   SELECT * FROM mdl_task_adhoc; * Verify that the returned row contains a current timestamp in the 'timecreated' field Run cron.   php admin/cli/cron.php * After the cron run, run the same SQL query and verify that the task was successfully processed and cleared. The rest is covered by unit tests to confirm everything is still operating properly.