The implementation mainly reflects the changes in the code level without having any changes to the UI. There are some basic tests can be done to make sure that mod_quiz is using the plugins rather than pointing back to the old api. Setup: Login to your Moodle as a site administrator. Create a new course. Create a quiz activity in that course. Create some questions in any question bank.   Test scenario: Navigate to the quiz Select "Edit quiz" from options Confirm: That the custom view is not broken and showing an empty page without any questions. Add a new question from the question bank. Confirm: That the addition is working perfectly and the question list from the banks are showing properly. Edit that question. Confirm: That the question edit page redirects to 'question/bank/editquestion/question.php' That the editing is working fine from the plugin Save changes and return back to the custom view. Click the preview icon. Confirm: That the preview pop up url is 'question/bank/previewquestion/preview.php' That the comment section is visible for the users to comment on the question. Close the preview. Ensure that you can disable qbank subplugins, but can't unsitall (only contibuted subplugins will be allowed for unistall)