Automated test Largely covered by existing Behat scenarios, e.g.: https://github.com/moodle/moodle/blob/1b1a15a30879fc05650dd6aa4460ce7167f94a5b/mod/workshop/tests/behat/workshop_section_remembered.feature#L24 https://github.com/moodle/moodle/blob/1b1a15a30879fc05650dd6aa4460ce7167f94a5b/blocks/site_main_menu/tests/behat/edit_activities.feature#L68-L70 https://github.com/moodle/moodle/blob/1b1a15a30879fc05650dd6aa4460ce7167f94a5b/blocks/navigation/tests/behat/view_my_courses.feature#L79 Manual test Ensure you have browser console open, watching network requests Log in as admin Navigate to Profile from user menu Press Edit profile Scroll down to New picture field Press Display folder as file tree in the filemanager element Confirm there is a request to the core_user_set_user_preferences service method (in your browser console network tab) Reload the page Confirm Display folder as file tree is still selected in the filemanager element Press Add in the New picture filemanager element Press Recent files in the File picker dialogue Confirm there is a request to the core_user_set_user_preferences service method Press Display folder as file tree in the File picker dialogue Confirm there is a request to the core_user_set_user_preferences service method Close the dialogue Reload the page Press Add in the New picture filemanager element Confirm Recent files is selected Confirm Display folder as file tree is selected Create a new course Navigate to Participants > Enrolment methods in course Press Enrol users in the Manual enrolments row Expand Search options Confirm there is a request to the core_user_set_user_preferences service method Tick Match the search text anywhere in the displayed fields Confirm there is a request to the core_user_set_user_preferences service method Reload the page Confirm Search options is expanded Confirm Match the search text anywhere in the displayed fields is ticked