Server accepts attributes array as first constructor parameter and sets attributes on server request

src/Server.php

@@ -15,6 +15,9 @@ use WellRESTed\Transmission\TransmitterInterface;
 
 class Server implements DispatchStackInterface
 {
+    /** @var array */
+    private $attributes;
+
     /** @var DispatcherInterface */
     private $dispatcher;
 
@@ -24,15 +27,24 @@ class Server implements DispatchStackInterface
     /**
      * Create a new router.
      *
+     * @param array $attributes key-value pairs to register as attributes
+     *     with the server request.
      * @param DispatcherInterface $dispatcher Dispatches middleware. If no
      *     object is passed, the Server will create a
      *     WellRESTed\Dispatching\Dispatcher
      */
-    public function __construct(DispatcherInterface $dispatcher = null)
+    public function __construct(array $attributes = null, DispatcherInterface $dispatcher = null)
     {
-        if ($dispatcher === null) {
-            $this->dispatcher = $this->getDispatcher();
+        if ($attributes === null) {
+            $attributes = [];
         }
+        $this->attributes = $attributes;
+
+        if ($dispatcher === null) {
+            $dispatcher = $this->getDispatcher();
+        }
+        $this->dispatcher = $dispatcher;
+
         $this->stack = [];
     }
 
@@ -104,6 +116,9 @@ class Server implements DispatchStackInterface
         if ($request === null) {
             $request = $this->getRequest();
         }
+        foreach ($this->attributes as $name => $value) {
+            $request = $request->withAttribute($name, $value);
+        }
         if ($response === null) {
             $response = $this->getResponse();
         }

test/tests/unit/ServerTest.php

@@ -21,6 +21,7 @@ class ServerTest extends \PHPUnit_Framework_TestCase
     {
         parent::setUp();
         $this->request = $this->prophesize('Psr\Http\Message\ServerRequestInterface');
+        $this->request->withAttribute(Argument::cetera())->willReturn($this->request->reveal());
         $this->response = $this->prophesize('Psr\Http\Message\ResponseInterface');
         $this->transmitter = $this->prophesize('WellRESTed\Transmission\TransmitterInterface');
         $this->transmitter->transmit(Argument::cetera())->willReturn();
@@ -169,4 +170,22 @@ class ServerTest extends \PHPUnit_Framework_TestCase
             $next
         )->shouldHaveBeenCalled();
     }
+
+    // ------------------------------------------------------------------------
+    // Attributes
+
+    /**
+     * @covers ::respond
+     */
+    public function testAddsAttributesToRequest()
+    {
+        $attributes = [
+            "name" => "value"
+        ];
+
+        $this->server->__construct($attributes);
+        $this->server->respond();
+        $this->request->withAttribute("name", "value")->shouldHaveBeenCalled();
+    }
+
 }