From a1bc763a16ee8be109de5c9053fbc5eded53824e Mon Sep 17 00:00:00 2001
From: Igor Scheller <igor.scheller@igorshp.de>
Date: Sat, 25 Aug 2018 21:16:20 +0200
Subject: Added nikic/fast-route as routing dispatcher

---
 tests/Unit/Middleware/CallableHandlerTest.php      | 141 ++++++++++++++++++++
 tests/Unit/Middleware/DispatcherTest.php           |  58 ++------
 tests/Unit/Middleware/LegacyMiddlewareTest.php     |   8 +-
 tests/Unit/Middleware/NotFoundResponseTest.php     |  39 ------
 .../RequestHandlerServiceProviderTest.php          |  36 +++++
 tests/Unit/Middleware/RequestHandlerTest.php       |  89 +++++++++++++
 .../Middleware/ResolvesMiddlewareTraitTest.php     |  67 ++++++++++
 .../RouteDispatcherServiceProviderTest.php         |  65 +++++++++
 tests/Unit/Middleware/RouteDispatcherTest.php      | 148 +++++++++++++++++++++
 tests/Unit/Middleware/Stub/HasStaticMethod.php     |   8 ++
 .../Stub/ResolvesMiddlewareTraitImplementation.php |  35 +++++
 11 files changed, 604 insertions(+), 90 deletions(-)
 create mode 100644 tests/Unit/Middleware/CallableHandlerTest.php
 delete mode 100644 tests/Unit/Middleware/NotFoundResponseTest.php
 create mode 100644 tests/Unit/Middleware/RequestHandlerServiceProviderTest.php
 create mode 100644 tests/Unit/Middleware/RequestHandlerTest.php
 create mode 100644 tests/Unit/Middleware/ResolvesMiddlewareTraitTest.php
 create mode 100644 tests/Unit/Middleware/RouteDispatcherServiceProviderTest.php
 create mode 100644 tests/Unit/Middleware/RouteDispatcherTest.php
 create mode 100644 tests/Unit/Middleware/Stub/HasStaticMethod.php
 create mode 100644 tests/Unit/Middleware/Stub/ResolvesMiddlewareTraitImplementation.php

(limited to 'tests/Unit/Middleware')

diff --git a/tests/Unit/Middleware/CallableHandlerTest.php b/tests/Unit/Middleware/CallableHandlerTest.php
new file mode 100644
index 00000000..6e6dab58
--- /dev/null
+++ b/tests/Unit/Middleware/CallableHandlerTest.php
@@ -0,0 +1,141 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Middleware;
+
+use Engelsystem\Container\Container;
+use Engelsystem\Http\Response;
+use Engelsystem\Middleware\CallableHandler;
+use Engelsystem\Test\Unit\Middleware\Stub\HasStaticMethod;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use ReflectionClass as Reflection;
+use stdClass;
+
+class CallableHandlerTest extends TestCase
+{
+    public function provideCallable()
+    {
+        return [
+            [function () { }],
+            [[$this, 'provideCallable']],
+            [[HasStaticMethod::class, 'foo']],
+        ];
+    }
+
+    /**
+     * @dataProvider provideCallable
+     * @covers       \Engelsystem\Middleware\CallableHandler::__construct
+     * @param callable $callable
+     */
+    public function testInit($callable)
+    {
+        $handler = new CallableHandler($callable);
+
+        $reflection = new Reflection(get_class($handler));
+        $property = $reflection->getProperty('callable');
+        $property->setAccessible(true);
+
+        $this->assertEquals($callable, $property->getValue($handler));
+    }
+
+    /**
+     * @covers \Engelsystem\Middleware\CallableHandler::process
+     */
+    public function testProcess()
+    {
+        /** @var ServerRequestInterface|MockObject $request */
+        /** @var ResponseInterface|MockObject $response */
+        /** @var callable|MockObject $callable */
+        /** @var RequestHandlerInterface|MockObject $handler */
+        list($request, $response, $callable, $handler) = $this->getMocks();
+
+        $callable->expects($this->once())
+            ->method('__invoke')
+            ->with($request, $handler)
+            ->willReturn($response);
+
+        $middleware = new CallableHandler($callable);
+        $middleware->process($request, $handler);
+    }
+
+    /**
+     * @covers \Engelsystem\Middleware\CallableHandler::handle
+     */
+    public function testHandler()
+    {
+        /** @var ServerRequestInterface|MockObject $request */
+        /** @var ResponseInterface|MockObject $response */
+        /** @var callable|MockObject $callable */
+        list($request, $response, $callable) = $this->getMocks();
+
+        $callable->expects($this->once())
+            ->method('__invoke')
+            ->with($request)
+            ->willReturn($response);
+
+        $middleware = new CallableHandler($callable);
+        $middleware->handle($request);
+    }
+
+    /**
+     * @covers \Engelsystem\Middleware\CallableHandler::execute
+     */
+    public function testExecute()
+    {
+        /** @var ServerRequestInterface|MockObject $request */
+        /** @var Response|MockObject $response */
+        /** @var callable|MockObject $callable */
+        list($request, $response, $callable) = $this->getMocks();
+        /** @var Container|MockObject $container */
+        $container = $this->createMock(Container::class);
+
+        $callable->expects($this->exactly(3))
+            ->method('__invoke')
+            ->with($request)
+            ->willReturnOnConsecutiveCalls($response, 'Lorem ipsum?', 'I\'m not an exception!');
+
+        $container->expects($this->once())
+            ->method('get')
+            ->with('response')
+            ->willReturn($response);
+
+        $response->expects($this->once())
+            ->method('withContent')
+            ->with('Lorem ipsum?')
+            ->willReturn($response);
+
+        $middleware = new CallableHandler($callable, $container);
+        $return = $middleware->handle($request);
+        $this->assertInstanceOf(ResponseInterface::class, $return);
+        $this->assertEquals($response, $return);
+
+        $return = $middleware->handle($request);
+        $this->assertInstanceOf(ResponseInterface::class, $return);
+        $this->assertEquals($response, $return);
+
+        $middleware = new CallableHandler($callable);
+        $this->expectException(\InvalidArgumentException::class);
+        $middleware->handle($request);
+    }
+
+    /**
+     * @return array
+     */
+    protected function getMocks(): array
+    {
+        /** @var ServerRequestInterface|MockObject $request */
+        $request = $this->getMockForAbstractClass(ServerRequestInterface::class);
+        /** @var RequestHandlerInterface|MockObject $handler */
+        $handler = $this->getMockForAbstractClass(RequestHandlerInterface::class);
+        /** @var Response|MockObject $response */
+        $response = $this->createMock(Response::class);
+        /** @var callable|MockObject $callable */
+        $callable = $this->getMockBuilder(stdClass::class)
+            ->setMethods(['__invoke'])
+            ->getMock();
+        return array($request, $response, $callable, $handler);
+    }
+}
diff --git a/tests/Unit/Middleware/DispatcherTest.php b/tests/Unit/Middleware/DispatcherTest.php
index c01c5029..4e1c51a7 100644
--- a/tests/Unit/Middleware/DispatcherTest.php
+++ b/tests/Unit/Middleware/DispatcherTest.php
@@ -5,7 +5,6 @@ namespace Engelsystem\Test\Unit\Middleware;
 use Engelsystem\Application;
 use Engelsystem\Middleware\Dispatcher;
 use Engelsystem\Test\Unit\Middleware\Stub\NotARealMiddleware;
-use Engelsystem\Test\Unit\Middleware\Stub\ReturnResponseMiddleware;
 use InvalidArgumentException;
 use LogicException;
 use PHPUnit\Framework\TestCase;
@@ -158,14 +157,14 @@ class DispatcherTest extends TestCase
 
         /** @var Dispatcher|MockObject $dispatcher */
         $dispatcher = $this->getMockBuilder(Dispatcher::class)
-            ->setConstructorArgs([[MiddlewareInterface::class]])
+            ->setConstructorArgs([[MiddlewareInterface::class, MiddlewareInterface::class]])
             ->setMethods(['resolveMiddleware'])
             ->getMock();
 
-        $dispatcher->expects($this->once())
+        $dispatcher->expects($this->exactly(2))
             ->method('resolveMiddleware')
             ->with(MiddlewareInterface::class)
-            ->willReturn($middleware);
+            ->willReturnOnConsecutiveCalls($middleware, null);
 
         $middleware->expects($this->once())
             ->method('process')
@@ -174,57 +173,26 @@ class DispatcherTest extends TestCase
 
         $return = $dispatcher->handle($request);
         $this->assertEquals($response, $return);
+
+        $this->expectException(InvalidArgumentException::class);
+        $dispatcher->handle($request);
     }
 
     /**
-     * @covers \Engelsystem\Middleware\Dispatcher::resolveMiddleware
      * @covers \Engelsystem\Middleware\Dispatcher::setContainer
      */
-    public function testResolveMiddleware()
+    public function testSetContainer()
     {
         /** @var Application|MockObject $container */
         $container = $this->createMock(Application::class);
-        /** @var ServerRequestInterface|MockObject $request */
-        $request = $this->createMock(ServerRequestInterface::class);
-        /** @var ResponseInterface|MockObject $response */
-        $response = $this->createMock(ResponseInterface::class);
-
-        $returnResponseMiddleware = new ReturnResponseMiddleware($response);
-
-        $container->expects($this->exactly(2))
-            ->method('has')
-            ->withConsecutive([ReturnResponseMiddleware::class], ['middleware'])
-            ->willReturnOnConsecutiveCalls(false, true);
-
-        $container->expects($this->once())
-            ->method('make')
-            ->with(ReturnResponseMiddleware::class)
-            ->willReturn($returnResponseMiddleware);
-
-        $container->expects($this->once())
-            ->method('get')
-            ->with('middleware')
-            ->willReturn($returnResponseMiddleware);
-
-        $dispatcher = new Dispatcher([ReturnResponseMiddleware::class]);
-        $dispatcher->setContainer($container);
-        $dispatcher->handle($request);
 
-        $dispatcher = new Dispatcher(['middleware'], $container);
-        $dispatcher->handle($request);
-    }
+        $middleware = new Dispatcher();
+        $middleware->setContainer($container);
 
-    /**
-     * @covers \Engelsystem\Middleware\Dispatcher::resolveMiddleware
-     */
-    public function testResolveMiddlewareNoContainer()
-    {
-        /** @var ServerRequestInterface|MockObject $request */
-        $request = $this->createMock(ServerRequestInterface::class);
-
-        $this->expectException(InvalidArgumentException::class);
+        $reflection = new Reflection(get_class($middleware));
+        $property = $reflection->getProperty('container');
+        $property->setAccessible(true);
 
-        $dispatcher = new Dispatcher([ReturnResponseMiddleware::class]);
-        $dispatcher->handle($request);
+        $this->assertEquals($container, $property->getValue($middleware));
     }
 }
diff --git a/tests/Unit/Middleware/LegacyMiddlewareTest.php b/tests/Unit/Middleware/LegacyMiddlewareTest.php
index 34e60b60..ed9a5a74 100644
--- a/tests/Unit/Middleware/LegacyMiddlewareTest.php
+++ b/tests/Unit/Middleware/LegacyMiddlewareTest.php
@@ -46,10 +46,11 @@ class LegacyMiddlewareTest extends TestCase
                 ['title2', 'content2']
             );
 
-        $middleware->expects($this->exactly(2))
+        $middleware->expects($this->exactly(3))
             ->method('renderPage')
             ->withConsecutive(
                 ['user_worklog', 'title', 'content'],
+                ['404', 'Page not found'],
                 ['login', 'title2', 'content2']
             )
             ->willReturn($response);
@@ -73,11 +74,6 @@ class LegacyMiddlewareTest extends TestCase
                 '/'
             );
 
-        $handler->expects($this->once())
-            ->method('handle')
-            ->with($request)
-            ->willReturn($response);
-
         $middleware->process($request, $handler);
         $middleware->process($request, $handler);
         $middleware->process($request, $handler);
diff --git a/tests/Unit/Middleware/NotFoundResponseTest.php b/tests/Unit/Middleware/NotFoundResponseTest.php
deleted file mode 100644
index 9279e81d..00000000
--- a/tests/Unit/Middleware/NotFoundResponseTest.php
+++ /dev/null
@@ -1,39 +0,0 @@
-<?php
-
-namespace Engelsystem\Test\Unit\Middleware;
-
-use Engelsystem\Middleware\NotFoundResponse;
-use PHPUnit\Framework\TestCase;
-use PHPUnit_Framework_MockObject_MockObject as MockObject;
-use Psr\Http\Message\ResponseInterface;
-use Psr\Http\Message\ServerRequestInterface;
-use Psr\Http\Server\RequestHandlerInterface;
-
-class NotFoundResponseTest extends TestCase
-{
-    /**
-     * @covers \Engelsystem\Middleware\NotFoundResponse::process
-     */
-    public function testRegister()
-    {
-        /** @var NotFoundResponse|MockObject $middleware */
-        $middleware = $this->getMockBuilder(NotFoundResponse::class)
-            ->setMethods(['renderPage'])
-            ->getMock();
-        /** @var ResponseInterface|MockObject $response */
-        $response = $this->getMockForAbstractClass(ResponseInterface::class);
-        /** @var RequestHandlerInterface|MockObject $handler */
-        $handler = $this->getMockForAbstractClass(RequestHandlerInterface::class);
-        /** @var ServerRequestInterface|MockObject $request */
-        $request = $this->getMockForAbstractClass(ServerRequestInterface::class);
-
-        $middleware->expects($this->once())
-            ->method('renderPage')
-            ->willReturn($response);
-
-        $handler->expects($this->never())
-            ->method('handle');
-
-        $middleware->process($request, $handler);
-    }
-}
diff --git a/tests/Unit/Middleware/RequestHandlerServiceProviderTest.php b/tests/Unit/Middleware/RequestHandlerServiceProviderTest.php
new file mode 100644
index 00000000..281016b5
--- /dev/null
+++ b/tests/Unit/Middleware/RequestHandlerServiceProviderTest.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Middleware;
+
+use Engelsystem\Middleware\RequestHandler;
+use Engelsystem\Middleware\RequestHandlerServiceProvider;
+use Engelsystem\Test\Unit\ServiceProviderTest;
+use PHPUnit\Framework\MockObject\MockObject;
+
+class RequestHandlerServiceProviderTest extends ServiceProviderTest
+{
+    /**
+     * @covers \Engelsystem\Middleware\RequestHandlerServiceProvider::register()
+     */
+    public function testRegister()
+    {
+        /** @var RequestHandler|MockObject $requestHandler */
+        $requestHandler = $this->createMock(RequestHandler::class);
+
+        $app = $this->getApp(['make', 'instance', 'bind']);
+
+        $app->expects($this->once())
+            ->method('make')
+            ->with(RequestHandler::class)
+            ->willReturn($requestHandler);
+        $app->expects($this->once())
+            ->method('instance')
+            ->with('request.handler', $requestHandler);
+        $app->expects($this->once())
+            ->method('bind')
+            ->with(RequestHandler::class, 'request.handler');
+
+        $serviceProvider = new RequestHandlerServiceProvider($app);
+        $serviceProvider->register();
+    }
+}
diff --git a/tests/Unit/Middleware/RequestHandlerTest.php b/tests/Unit/Middleware/RequestHandlerTest.php
new file mode 100644
index 00000000..896b55c3
--- /dev/null
+++ b/tests/Unit/Middleware/RequestHandlerTest.php
@@ -0,0 +1,89 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Middleware;
+
+use Engelsystem\Application;
+use Engelsystem\Middleware\RequestHandler;
+use InvalidArgumentException;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use ReflectionClass as Reflection;
+
+class RequestHandlerTest extends TestCase
+{
+    /**
+     * @covers \Engelsystem\Middleware\RequestHandler::__construct
+     */
+    public function testInit()
+    {
+        /** @var Application|MockObject $container */
+        $container = $this->createMock(Application::class);
+
+        $handler = new RequestHandler($container);
+
+        $reflection = new Reflection(get_class($handler));
+        $property = $reflection->getProperty('container');
+        $property->setAccessible(true);
+
+        $this->assertEquals($container, $property->getValue($handler));
+    }
+
+    /**
+     * @covers \Engelsystem\Middleware\RequestHandler::process
+     */
+    public function testProcess()
+    {
+        /** @var Application|MockObject $container */
+        $container = $this->createMock(Application::class);
+        /** @var ServerRequestInterface|MockObject $request */
+        $request = $this->getMockForAbstractClass(ServerRequestInterface::class);
+        /** @var RequestHandlerInterface|MockObject $handler */
+        $handler = $this->getMockForAbstractClass(RequestHandlerInterface::class);
+        /** @var ResponseInterface|MockObject $response */
+        $response = $this->getMockForAbstractClass(ResponseInterface::class);
+
+        $middlewareInterface = $this->getMockForAbstractClass(MiddlewareInterface::class);
+        $requestHandlerInterface = $this->getMockForAbstractClass(RequestHandlerInterface::class);
+
+        $request->expects($this->exactly(3))
+            ->method('getAttribute')
+            ->with('route-request-handler')
+            ->willReturn('FooBarClass');
+
+        /** @var RequestHandler|MockObject $middleware */
+        $middleware = $this->getMockBuilder(RequestHandler::class)
+            ->setConstructorArgs([$container])
+            ->setMethods(['resolveMiddleware'])
+            ->getMock();
+        $middleware->expects($this->exactly(3))
+            ->method('resolveMiddleware')
+            ->with('FooBarClass')
+            ->willReturnOnConsecutiveCalls(
+                $middlewareInterface,
+                $requestHandlerInterface,
+                null
+            );
+
+        $middlewareInterface->expects($this->once())
+            ->method('process')
+            ->with($request, $handler)
+            ->willReturn($response);
+        $requestHandlerInterface->expects($this->once())
+            ->method('handle')
+            ->with($request)
+            ->willReturn($response);
+
+        $return = $middleware->process($request, $handler);
+        $this->assertEquals($return, $response);
+
+        $middleware->process($request, $handler);
+        $this->assertEquals($return, $response);
+
+        $this->expectException(InvalidArgumentException::class);
+        $middleware->process($request, $handler);
+    }
+}
diff --git a/tests/Unit/Middleware/ResolvesMiddlewareTraitTest.php b/tests/Unit/Middleware/ResolvesMiddlewareTraitTest.php
new file mode 100644
index 00000000..320a6d6b
--- /dev/null
+++ b/tests/Unit/Middleware/ResolvesMiddlewareTraitTest.php
@@ -0,0 +1,67 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Middleware;
+
+use Engelsystem\Application;
+use Engelsystem\Middleware\CallableHandler;
+use Engelsystem\Test\Unit\Middleware\Stub\HasStaticMethod;
+use Engelsystem\Test\Unit\Middleware\Stub\ResolvesMiddlewareTraitImplementation;
+use InvalidArgumentException;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+use Psr\Http\Server\MiddlewareInterface;
+
+class ResolvesMiddlewareTraitTest extends TestCase
+{
+    /**
+     * @covers \Engelsystem\Middleware\ResolvesMiddlewareTrait::resolveMiddleware
+     * @covers \Engelsystem\Middleware\ResolvesMiddlewareTrait::isMiddleware
+     */
+    public function testResolveMiddleware()
+    {
+        /** @var Application|MockObject $container */
+        $container = $this->createMock(Application::class);
+        $middlewareInterface = $this->getMockForAbstractClass(MiddlewareInterface::class);
+        $callable = [HasStaticMethod::class, 'foo'];
+
+        $container->expects($this->exactly(3))
+            ->method('make')
+            ->withConsecutive(
+                ['FooBarClass'],
+                [CallableHandler::class, ['callable' => $callable]],
+                ['UnresolvableClass']
+            )
+            ->willReturnOnConsecutiveCalls(
+                $middlewareInterface,
+                $middlewareInterface,
+                null
+            );
+
+        $middleware = new ResolvesMiddlewareTraitImplementation($container);
+
+        $return = $middleware->callResolveMiddleware('FooBarClass');
+        $this->assertEquals($middlewareInterface, $return);
+
+        $return = $middleware->callResolveMiddleware($callable);
+        $this->assertEquals($middlewareInterface, $return);
+
+        $this->expectException(InvalidArgumentException::class);
+        $middleware->callResolveMiddleware('UnresolvableClass');
+    }
+
+    /**
+     * @covers \Engelsystem\Middleware\ResolvesMiddlewareTrait::resolveMiddleware
+     */
+    public function testResolveMiddlewareNoContainer()
+    {
+        $middlewareInterface = $this->getMockForAbstractClass(MiddlewareInterface::class);
+
+        $middleware = new ResolvesMiddlewareTraitImplementation();
+        $return = $middleware->callResolveMiddleware($middlewareInterface);
+
+        $this->assertEquals($middlewareInterface, $return);
+
+        $this->expectException(InvalidArgumentException::class);
+        $middleware->callResolveMiddleware('FooBarClass');
+    }
+}
diff --git a/tests/Unit/Middleware/RouteDispatcherServiceProviderTest.php b/tests/Unit/Middleware/RouteDispatcherServiceProviderTest.php
new file mode 100644
index 00000000..ca784c73
--- /dev/null
+++ b/tests/Unit/Middleware/RouteDispatcherServiceProviderTest.php
@@ -0,0 +1,65 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Middleware;
+
+use Engelsystem\Middleware\LegacyMiddleware;
+use Engelsystem\Middleware\RouteDispatcher;
+use Engelsystem\Middleware\RouteDispatcherServiceProvider;
+use Engelsystem\Test\Unit\ServiceProviderTest;
+use FastRoute\Dispatcher as FastRouteDispatcher;
+use Illuminate\Contracts\Container\ContextualBindingBuilder;
+use PHPUnit\Framework\MockObject\MockObject;
+use Psr\Http\Server\MiddlewareInterface;
+
+class RouteDispatcherServiceProviderTest extends ServiceProviderTest
+{
+    /**
+     * @covers \Engelsystem\Middleware\RouteDispatcherServiceProvider::register()
+     */
+    public function testRegister()
+    {
+        $bindingBuilder = $this->createMock(ContextualBindingBuilder::class);
+        $routeDispatcher = $this->getMockForAbstractClass(FastRouteDispatcher::class);
+
+        $app = $this->getApp(['alias', 'when']);
+
+        $app->expects($this->once())
+            ->method('alias')
+            ->with(RouteDispatcher::class, 'route.dispatcher');
+
+        $app->expects($this->exactly(2))
+            ->method('when')
+            ->with(RouteDispatcher::class)
+            ->willReturn($bindingBuilder);
+
+        $bindingBuilder->expects($this->exactly(2))
+            ->method('needs')
+            ->withConsecutive(
+                [FastRouteDispatcher::class],
+                [MiddlewareInterface::class]
+            )
+            ->willReturn($bindingBuilder);
+
+        $bindingBuilder->expects($this->exactly(2))
+            ->method('give')
+            ->with($this->callback(function ($subject) {
+                if (is_callable($subject)) {
+                    $subject();
+                }
+
+                return is_callable($subject) || $subject == LegacyMiddleware::class;
+            }));
+
+        /** @var RouteDispatcherServiceProvider|MockObject $serviceProvider */
+        $serviceProvider = $this->getMockBuilder(RouteDispatcherServiceProvider::class)
+            ->setConstructorArgs([$app])
+            ->setMethods(['generateRouting'])
+            ->getMock();
+
+        $serviceProvider->expects($this->once())
+            ->method('generateRouting')
+            ->willReturn($routeDispatcher);
+
+        $serviceProvider->register();
+    }
+}
diff --git a/tests/Unit/Middleware/RouteDispatcherTest.php b/tests/Unit/Middleware/RouteDispatcherTest.php
new file mode 100644
index 00000000..edb2f158
--- /dev/null
+++ b/tests/Unit/Middleware/RouteDispatcherTest.php
@@ -0,0 +1,148 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Middleware;
+
+use Engelsystem\Middleware\RouteDispatcher;
+use FastRoute\Dispatcher as FastRouteDispatcher;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Message\UriInterface;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+
+class RouteDispatcherTest extends TestCase
+{
+    /**
+     * @covers \Engelsystem\Middleware\RouteDispatcher::process
+     * @covers \Engelsystem\Middleware\RouteDispatcher::__construct
+     */
+    public function testProcess()
+    {
+        /** @var FastRouteDispatcher|MockObject $dispatcher */
+        /** @var ResponseInterface|MockObject $response */
+        /** @var ServerRequestInterface|MockObject $request */
+        /** @var RequestHandlerInterface|MockObject $handler */
+        list($dispatcher, $response, $request, $handler) = $this->getMocks();
+
+        $dispatcher->expects($this->once())
+            ->method('dispatch')
+            ->with('HEAD', '/foo!bar')
+            ->willReturn([FastRouteDispatcher::FOUND, $handler, ['foo' => 'bar', 'lorem' => 'ipsum']]);
+
+        $request->expects($this->exactly(3))
+            ->method('withAttribute')
+            ->withConsecutive(
+                ['route-request-handler', $handler],
+                ['foo', 'bar'],
+                ['lorem', 'ipsum']
+            )
+            ->willReturn($request);
+
+        $handler->expects($this->once())
+            ->method('handle')
+            ->with($request)
+            ->willReturn($response);
+
+        $middleware = new RouteDispatcher($dispatcher, $response);
+        $return = $middleware->process($request, $handler);
+        $this->assertEquals($response, $return);
+    }
+
+    /**
+     * @covers \Engelsystem\Middleware\RouteDispatcher::process
+     */
+    public function testProcessNotFound()
+    {
+        /** @var FastRouteDispatcher|MockObject $dispatcher */
+        /** @var ResponseInterface|MockObject $response */
+        /** @var ServerRequestInterface|MockObject $request */
+        /** @var RequestHandlerInterface|MockObject $handler */
+        list($dispatcher, $response, $request, $handler) = $this->getMocks();
+        /** @var MiddlewareInterface|MockObject $notFound */
+        $notFound = $this->createMock(MiddlewareInterface::class);
+
+        $dispatcher->expects($this->exactly(2))
+            ->method('dispatch')
+            ->with('HEAD', '/foo!bar')
+            ->willReturn([FastRouteDispatcher::NOT_FOUND]);
+
+        $response->expects($this->once())
+            ->method('withStatus')
+            ->with(404)
+            ->willReturn($response);
+
+        $notFound->expects($this->once())
+            ->method('process')
+            ->with($request, $handler)
+            ->willReturn($response);
+
+        $middleware = new RouteDispatcher($dispatcher, $response, $notFound);
+        $return = $middleware->process($request, $handler);
+        $this->assertEquals($response, $return);
+
+        $middleware = new RouteDispatcher($dispatcher, $response);
+        $return = $middleware->process($request, $handler);
+        $this->assertEquals($response, $return);
+    }
+
+    /**
+     * @covers \Engelsystem\Middleware\RouteDispatcher::process
+     */
+    public function testProcessNotAllowed()
+    {
+        /** @var FastRouteDispatcher|MockObject $dispatcher */
+        /** @var ResponseInterface|MockObject $response */
+        /** @var ServerRequestInterface|MockObject $request */
+        /** @var RequestHandlerInterface|MockObject $handler */
+        list($dispatcher, $response, $request, $handler) = $this->getMocks();
+
+        $dispatcher->expects($this->once())
+            ->method('dispatch')
+            ->with('HEAD', '/foo!bar')
+            ->willReturn([FastRouteDispatcher::METHOD_NOT_ALLOWED, ['POST', 'TEST']]);
+
+        $response->expects($this->once())
+            ->method('withStatus')
+            ->with(405)
+            ->willReturn($response);
+        $response->expects($this->once())
+            ->method('withHeader')
+            ->with('Allow', 'POST, TEST')
+            ->willReturn($response);
+
+        $middleware = new RouteDispatcher($dispatcher, $response);
+        $return = $middleware->process($request, $handler);
+        $this->assertEquals($response, $return);
+    }
+
+    /**
+     * @return array
+     */
+    protected function getMocks(): array
+    {
+        /** @var FastRouteDispatcher|MockObject $dispatcher */
+        $dispatcher = $this->getMockForAbstractClass(FastRouteDispatcher::class);
+        /** @var ResponseInterface|MockObject $response */
+        $response = $this->getMockForAbstractClass(ResponseInterface::class);
+        /** @var ServerRequestInterface|MockObject $request */
+        $request = $this->getMockForAbstractClass(ServerRequestInterface::class);
+        /** @var RequestHandlerInterface|MockObject $handler */
+        $handler = $this->getMockForAbstractClass(RequestHandlerInterface::class);
+        /** @var UriInterface|MockObject $uriInterface */
+        $uriInterface = $this->getMockForAbstractClass(UriInterface::class);
+
+        $request->expects($this->atLeastOnce())
+            ->method('getMethod')
+            ->willReturn('HEAD');
+        $request->expects($this->atLeastOnce())
+            ->method('getUri')
+            ->willReturn($uriInterface);
+        $uriInterface->expects($this->atLeastOnce())
+            ->method('getPath')
+            ->willReturn('/foo%21bar');
+
+        return array($dispatcher, $response, $request, $handler);
+    }
+}
diff --git a/tests/Unit/Middleware/Stub/HasStaticMethod.php b/tests/Unit/Middleware/Stub/HasStaticMethod.php
new file mode 100644
index 00000000..5ca2670e
--- /dev/null
+++ b/tests/Unit/Middleware/Stub/HasStaticMethod.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Middleware\Stub;
+
+class HasStaticMethod
+{
+    public static function foo() { }
+}
diff --git a/tests/Unit/Middleware/Stub/ResolvesMiddlewareTraitImplementation.php b/tests/Unit/Middleware/Stub/ResolvesMiddlewareTraitImplementation.php
new file mode 100644
index 00000000..2787d74b
--- /dev/null
+++ b/tests/Unit/Middleware/Stub/ResolvesMiddlewareTraitImplementation.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Middleware\Stub;
+
+use Engelsystem\Application;
+use Engelsystem\Middleware\ResolvesMiddlewareTrait;
+use InvalidArgumentException;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+
+class ResolvesMiddlewareTraitImplementation
+{
+    use ResolvesMiddlewareTrait;
+
+    /** @var Application */
+    protected $container;
+
+    /**
+     * @param Application $container
+     */
+    public function __construct(Application $container = null)
+    {
+        $this->container = $container;
+    }
+
+    /**
+     * @param string|callable|MiddlewareInterface|RequestHandlerInterface $middleware
+     * @return MiddlewareInterface|RequestHandlerInterface
+     * @throws InvalidArgumentException
+     */
+    public function callResolveMiddleware($middleware)
+    {
+        return $this->resolveMiddleware($middleware);
+    }
+}
-- 
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