Replaceable

Author: arokettu

README.md

@@ -14,3 +14,4 @@ Some shared debug stuff for the Peso Framework.
 ## Services
 
 * BlackHoleService. Accepts all valid requests and returns the corresponding "not found" error
+* ReplaceableService. A mutable wrapper that allows switching the underlying service object

infection.json5.dist

@@ -0,0 +1,15 @@
+{
+    $schema: "https://raw.githubusercontent.com/infection/infection/0.32.0/resources/schema.json",
+    source: {
+        directories: [
+            "src",
+        ],
+    },
+    logs: {
+        text: "reports/infection.log",
+        html: "reports/infection.html",
+    },
+    mutators: {
+        "@default": true,
+    },
+}

src/Services/ReplaceableService.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Peso\Debug\Services;
+
+use Peso\Core\Responses\ConversionResponse;
+use Peso\Core\Responses\ErrorResponse;
+use Peso\Core\Responses\ExchangeRateResponse;
+use Peso\Core\Services\PesoServiceInterface;
+
+final class ReplaceableService implements PesoServiceInterface
+{
+    public function __construct(
+        public PesoServiceInterface $service,
+    ) {
+    }
+
+    public function send(object $request): ExchangeRateResponse|ConversionResponse|ErrorResponse
+    {
+        return $this->service->send($request);
+    }
+
+    public function supports(object $request): bool
+    {
+        return $this->service->supports($request);
+    }
+}

tests/Services/ReplaceableServiceTest.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Peso\Debug\Tests\Services;
+
+use Peso\Core\Exceptions\ExchangeRateNotFoundException;
+use Peso\Core\Exceptions\RequestNotSupportedException;
+use Peso\Core\Requests\CurrentExchangeRateRequest;
+use Peso\Core\Responses\ErrorResponse;
+use Peso\Core\Services\NullService;
+use Peso\Debug\Services\BlackHoleService;
+use Peso\Debug\Services\ReplaceableService;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(ReplaceableService::class)]
+final class ReplaceableServiceTest extends TestCase
+{
+    public function testSend(): void
+    {
+        $service = new ReplaceableService(new BlackHoleService());
+
+        $response = $service->send(new CurrentExchangeRateRequest('EUR', 'PHP'));
+        self::assertInstanceOf(ErrorResponse::class, $response);
+        self::assertInstanceOf(ExchangeRateNotFoundException::class, $response->exception);
+
+        $service->service = new NullService();
+
+        $response = $service->send(new CurrentExchangeRateRequest('EUR', 'PHP'));
+        self::assertInstanceOf(ErrorResponse::class, $response);
+        self::assertInstanceOf(RequestNotSupportedException::class, $response->exception);
+    }
+
+    public function testSupports(): void
+    {
+        $service = new ReplaceableService(new BlackHoleService());
+
+        self::assertTrue($service->supports(new CurrentExchangeRateRequest('EUR', 'PHP')));
+
+        $service->service = new NullService();
+
+        self::assertFalse($service->supports(new CurrentExchangeRateRequest('EUR', 'PHP')));
+    }
+}