silverstripe-framework/Dev/Tasks/CleanupTestDatabasesTask.php

<?php

namespace SilverStripe\Dev\Tasks;

use SilverStripe\Control\Director;
use SilverStripe\Dev\SapphireTest;
use SilverStripe\Dev\BuildTask;
use SilverStripe\Security\Permission;
use SilverStripe\Security\Security;

/**
 * Cleans up leftover databases from aborted test executions (starting with ss_tmpdb)
 * Task is restricted to users with administrator rights or running through CLI.
 */
class CleanupTestDatabasesTask extends BuildTask {

	private static $segment = 'CleanupTestDatabasesTask';

	protected $title = 'Deletes all temporary test databases';

	protected $description = 'Cleans up leftover databases from aborted test executions (starting with ss_tmpdb)';

	public function run($request) {
		if(!Permission::check('ADMIN') && !Director::is_cli()) {
			$response = Security::permissionFailure();
			if($response) {
				$response->output();
			}
			die;
		}

		SapphireTest::delete_all_temp_dbs();
	}

}