silverstripe-framework/tests/php/Control/ControllerTest/AccessWildcardSecuredController.php

<?php

namespace SilverStripe\Control\Tests\ControllerTest;

use SilverStripe\Control\Tests\ControllerTest;
use SilverStripe\Dev\TestOnly;

class AccessWildcardSecuredController extends ControllerTest\AccessBaseController implements TestOnly
{

    private static $allowed_actions = array(
        "*" => "ADMIN", // should throw exception
    );
}