setConfigCacheFactory example

$container->setParameter('parameter.condition', $parameter);

            $router = new Router($container, 'with_condition.yaml', [
                'debug' => true,
                'cache_dir' => $cacheDir,
            ]);

            $resourceCheckers = [
                new ContainerParametersResourceChecker($container),
            ];

            $router->setConfigCacheFactory(new ResourceCheckerConfigCacheFactory($resourceCheckers));

            $router->getMatcher(); // trigger cache build
            $cache = new ResourceCheckerConfigCache($cacheDir.\DIRECTORY_SEPARATOR.'url_matching_routes.php', $resourceCheckers);

            $this->assertTrue($cache->isFresh());
        } finally {
            if (is_dir($cacheDir)) {
                array_map('unlink', glob($cacheDir.\DIRECTORY_SEPARATOR.'*'));
                rmdir($cacheDir);
            }
        }