MDL-79338 core: add support for hook callback redirection in tests

lib/phpunit/classes/advanced_testcase.php

@@ -499,6 +499,26 @@ abstract class advanced_testcase extends base_testcase {
         return phpunit_util::start_event_redirection();
     }
 
+    /**
+     * Override hook callbacks.
+     *
+     * @param string $hookname
+     * @param callable $callback
+     * @return void
+     */
+    public function redirectHook(string $hookname, callable $callback): void {
+        \core\hook\manager::get_instance()->phpunit_redirect_hook($hookname, $callback);
+    }
+
+    /**
+     * Remove all hook overrides.
+     *
+     * @return void
+     */
+    public function stopHookRedirections(): void {
+        \core\hook\manager::get_instance()->phpunit_stop_redirections();
+    }
+
     /**
      * Reset all database tables, restore global state and clear caches and optionally purge dataroot dir.
      *

lib/phpunit/classes/util.php

@@ -104,6 +104,9 @@ class phpunit_util extends testing_util {
     public static function reset_all_data($detectchanges = false) {
         global $DB, $CFG, $USER, $SITE, $COURSE, $PAGE, $OUTPUT, $SESSION, $FULLME, $FILTERLIB_PRIVATE;
 
+        // Stop all hook redirections.
+        \core\hook\manager::get_instance()->phpunit_stop_redirections();
+
         // Stop any message redirection.
         self::stop_message_redirection();