Add NotFoundHandler

Author: devanych

src/Handler/NotFoundHandler.php

@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace HttpSoft\Basis\Handler;
+
+use HttpSoft\Basis\TemplateRendererInterface;
+use HttpSoft\ErrorHandler\ErrorResponseGeneratorInterface;
+use Psr\Http\Message\ResponseFactoryInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+
+final class NotFoundHandler implements RequestHandlerInterface
+{
+    /**
+     * @var ResponseFactoryInterface
+     */
+    private ResponseFactoryInterface $responseFactory;
+
+    /**
+     * @var TemplateRendererInterface
+     */
+    private TemplateRendererInterface $template;
+
+    /**
+     * @var string
+     */
+    private string $view;
+
+    /**
+     * @var bool
+     */
+    private bool $debug;
+
+    /**
+     * @param ResponseFactoryInterface $responseFactory
+     * @param TemplateRendererInterface $template
+     * @param string $view
+     * @param bool $debug
+     */
+    public function __construct(
+        ResponseFactoryInterface $responseFactory,
+        TemplateRendererInterface $template,
+        string $view,
+        bool $debug = false
+    ) {
+        $this->responseFactory = $responseFactory;
+        $this->template = $template;
+        $this->view = $view;
+        $this->debug = $debug;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function handle(ServerRequestInterface $request): ResponseInterface
+    {
+        $response = $this->responseFactory->createResponse(ErrorResponseGeneratorInterface::STATUS_NOT_FOUND);
+
+        $response->getBody()->write($this->template->render($this->view, [
+            'debug' => $this->debug,
+            'request' => $request,
+        ]));
+
+        return $response;
+    }
+}

tests/Handler/NotFoundHandlerTest.php

@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace HttpSoft\Tests\Basis\Handler;
+
+use HttpSoft\Basis\Handler\NotFoundHandler;
+use HttpSoft\Basis\Response\CustomResponseFactory;
+use HttpSoft\Basis\TemplateRendererInterface;
+use HttpSoft\Message\ServerRequestFactory;
+use HttpSoft\Tests\Basis\TestAsset\TemplateRenderer;
+use PHPUnit\Framework\TestCase;
+use Psr\Http\Message\ResponseFactoryInterface;
+use Psr\Http\Message\ServerRequestInterface;
+
+use function get_class;
+use function trim;
+
+class NotFoundHandlerTest extends TestCase
+{
+    /**
+     * @var ServerRequestInterface
+     */
+    private ServerRequestInterface $request;
+
+    /**
+     * @var TemplateRendererInterface
+     */
+    private TemplateRendererInterface $renderer;
+
+    /**
+     * @var ResponseFactoryInterface
+     */
+    private ResponseFactoryInterface $responseFactory;
+
+    public function setUp(): void
+    {
+        $this->request = (new ServerRequestFactory())->createServerRequest('GET', 'http://example.com');
+        $this->renderer = new TemplateRenderer();
+        $this->responseFactory = new CustomResponseFactory();
+    }
+
+    public function testHandleWithoutDebugMode(): void
+    {
+        $handler = new NotFoundHandler($this->responseFactory, $this->renderer, 'not-found', false);
+        $response = $handler->handle($this->request);
+
+        $expectedContent = '404 Not Found';
+        $this->assertSame($expectedContent, trim((string) $response->getBody()));
+    }
+
+    public function testHandleWithDebugMode(): void
+    {
+        $handler = new NotFoundHandler($this->responseFactory, $this->renderer, 'not-found', true);
+        $response = $handler->handle($this->request);
+
+        $expectedContent = get_class($this->renderer->getEngine()) . ':' . get_class($this->request);
+        $this->assertSame($expectedContent, trim((string) $response->getBody()));
+    }
+}