Extract DispatcherInterface

src/Routing/Dispatcher.php

@@ -5,13 +5,12 @@ namespace WellRESTed\Routing;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
 
-class Dispatcher
+class Dispatcher implements DispatcherInterface
 {
     /**
      * @param $middleware
      * @param ServerRequestInterface $request
      * @param ResponseInterface $response
-     * @return mixed
      */
     public function dispatch($middleware, ServerRequestInterface $request, ResponseInterface &$response)
     {

src/Routing/DispatcherInterface.php

@@ -0,0 +1,21 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: pjdietz
+ * Date: 4/6/15
+ * Time: 8:29 PM
+ */
+namespace WellRESTed\Routing;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+
+interface DispatcherInterface
+{
+    /**
+     * @param $middleware
+     * @param ServerRequestInterface $request
+     * @param ResponseInterface $response
+     */
+    public function dispatch($middleware, ServerRequestInterface $request, ResponseInterface &$response);
+}

src/Routing/MethodMap.php

@@ -90,8 +90,10 @@ class MethodMap implements MiddlewareInterface, MethodMapInterface
     }
 
     /**
-     * Return an instance that can dispatch middleware. Uses Dispatcher by default.
+     * Return an instance that can dispatch middleware.
      * Override to provide a custom class.
+     *
+     * @return DispatcherInterface
      */
     protected function getDispatcher()
     {

src/Routing/Router.php

@@ -75,6 +75,8 @@ class Router implements MiddlewareInterface
     /**
      * Return an instance that can dispatch middleware.
      * Override to provide a custom class.
+     *
+     * @return DispatcherInterface
      */
     protected function getDispatcher()
     {