onRouteAlter example

// Ensure that onRouteFinished can be called without throwing notices     // when no path roots got set.     $this->pathRootsSubscriber->onRouteFinished();

    $route_collection = new RouteCollection();
    $route_collection->add('test_route1', new Route('/test/bar'));
    $route_collection->add('test_route2', new Route('/test/baz'));
    $route_collection->add('test_route3', new Route('/test2/bar/baz'));

    $event = new RouteBuildEvent($route_collection);
    $this->pathRootsSubscriber->onRouteAlter($event);

    $route_collection = new RouteCollection();
    $route_collection->add('test_route4', new Route('/test1/bar'));
    $route_collection->add('test_route5', new Route('/test2/baz'));
    $route_collection->add('test_route6', new Route('/test2/bar/baz'));

    $event = new RouteBuildEvent($route_collection);
    $this->pathRootsSubscriber->onRouteAlter($event);

    $this->state->expects($this->once())
      ->method('set')