MDL-74413 phpunit: Move more tests to use correct names and namespaces

Applied the following changes to various testcase classes:

- Namespaced with component[\level2-API]
- Moved to level2-API subdirectory when required.
- Fixed incorrect use statements with leading backslash.
- Remove file phpdoc block
- Remove MOODLE_INTERNAL if not needed.
- Changed code to point to global scope when needed.
- Fix some relative paths and comments here and there.
- All them passing individually.
- Complete runs passing too.

Special mention to:

- Moved to the level2 "privacy" namespace:
  - \mod_assign\privacy\feedback_legacy_polyfill_test
  - \mod_assign\privacy\submission_legacy_polyfill_test

- Moved to the level2 "task" namespace:
  - \core_message\task\migrate_message_data_test
  - \ltiservice_gradebookservices\task\cleanup_test
  - \message_email\task\send_email_test
  - \mod_lti\task\clean_access_tokens_test
  - \mod_workshop\task\cron_task_test

- Moved to the level2 "event" namespace:
  - \core_h5p\event\deleted_test
  - \core_h5p\event\viewed_test

- Renamed to a better name:
  - backup_forum_activity_task_test.php (missing "task")

user/tests/editlib_test.php

@@ -14,14 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Unit tests for user/editlib.php.
- *
- * @package    core_user
- * @category   phpunit
- * @copyright  2013 Adrian Greeve <[email protected]>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
+namespace core_user;
 
 defined('MOODLE_INTERNAL') || die();
 
@@ -32,11 +25,11 @@ require_once($CFG->dirroot.'/user/editlib.php');
  * Unit tests for user editlib api.
  *
  * @package    core_user
- * @category   phpunit
+ * @category   test
  * @copyright  2013 Adrian Greeve <[email protected]>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
-class core_user_editlib_testcase extends advanced_testcase {
+class editlib_test extends \advanced_testcase {
 
     /**
      * Test that the required fields are returned in the correct order.
@@ -44,7 +37,7 @@ class core_user_editlib_testcase extends advanced_testcase {
     function test_useredit_get_required_name_fields() {
         global $CFG;
         // Back up config settings for restore later.
-        $originalcfg = new stdClass();
+        $originalcfg = new \stdClass();
         $originalcfg->fullnamedisplay = $CFG->fullnamedisplay;
 
         $CFG->fullnamedisplay = 'language';
@@ -70,7 +63,7 @@ class core_user_editlib_testcase extends advanced_testcase {
     function test_useredit_get_enabled_name_fields() {
         global $CFG;
         // Back up config settings for restore later.
-        $originalcfg = new stdClass();
+        $originalcfg = new \stdClass();
         $originalcfg->fullnamedisplay = $CFG->fullnamedisplay;
 
         $CFG->fullnamedisplay = 'language';
@@ -96,7 +89,7 @@ class core_user_editlib_testcase extends advanced_testcase {
     function test_useredit_get_disabled_name_fields() {
         global $CFG;
         // Back up config settings for restore later.
-        $originalcfg = new stdClass();
+        $originalcfg = new \stdClass();
         $originalcfg->fullnamedisplay = $CFG->fullnamedisplay;
 
         $CFG->fullnamedisplay = 'language';