--- /dev/null
+<?php
+
+namespace Drupal\devel_test\Routing;
+
+use Drupal\Core\Routing\RouteSubscriberBase;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * Router subscriber class for testing purpose.
+ */
+class TestRouteSubscriber extends RouteSubscriberBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function alterRoutes(RouteCollection $collection) {
+ \Drupal::state()->set('devel_test_route_rebuild','Router rebuild fired');
+ }
+
+}