keep the possiblity to override routeRequestHandler

Author: dominikzogg

src/Application.php

@@ -17,20 +17,15 @@ final class Application implements RequestHandlerInterface
 {
     private PipeMiddleware $pipeMiddleware;
 
-    private RequestHandlerInterface $routeRequestHandler;
-
-    private EmitterInterface $emitter;
-
     /**
      * @param array<MiddlewareInterface> $middlewares
      */
     public function __construct(
         array $middlewares,
-        ?EmitterInterface $emitter = null
+        private RequestHandlerInterface $routeRequestHandler = new RouteRequestHandler(),
+        private EmitterInterface $emitter = new Emitter()
     ) {
         $this->pipeMiddleware = new PipeMiddleware($middlewares);
-        $this->routeRequestHandler = new RouteRequestHandler();
-        $this->emitter = $emitter ?? new Emitter();
     }
 
     public function __invoke(ServerRequestInterface $request): ResponseInterface

tests/Unit/ApplicationTest.php

@@ -147,12 +147,15 @@ public function testEmit(): void
         /** @var MockObject|ResponseInterface $response */
         $response = $builder->create(ResponseInterface::class, []);
 
+        /** @var RequestHandlerInterface $routeRequestHandler */
+        $routeRequestHandler = $builder->create(RequestHandlerInterface::class, []);
+
         /** @var EmitterInterface $emitter */
         $emitter = $builder->create(EmitterInterface::class, [
             new WithReturn('emit', [$response], null),
         ]);
 
-        $application = new Application([], $emitter);
+        $application = new Application([], $routeRequestHandler, $emitter);
         $application->emit($response);
     }
 }