feat: Ajout d'un endpoint getBySlug

tests/Feature/Manga/GetMangaBySlugTest.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace App\Tests\Feature\Manga;
+
+use App\Entity\Manga;
+use App\Factory\MangaFactory;
+use App\Tests\Feature\AbstractApiTestCase;
+use Symfony\Component\HttpFoundation\Response;
+use Zenstruck\Foundry\Test\Factories;
+use Zenstruck\Foundry\Test\ResetDatabase;
+
+class GetMangaBySlugTest extends AbstractApiTestCase
+{
+    use ResetDatabase, Factories;
+
+    public function testGetMangaBySlugReturnsCorrectManga(): void
+    {
+        // Arrange
+        $manga = MangaFactory::createOne([
+            'title' => 'One Piece',
+            'slug' => 'one-piece',
+            'description' => 'Description',
+            'author' => 'Eiichiro Oda',
+            'publicationYear' => 1997,
+            'genres' => ['Action', 'Adventure'],
+            'status' => 'ongoing',
+            'imageUrl' => 'https://example.com/image.jpg',
+            'rating' => 4.5,
+            'monitored' => true
+        ]);
+
+        // Act
+        static::createClient()->request('GET', '/api/mangas/by-slug/one-piece');
+
+        // Assert
+        $this->assertResponseIsSuccessful();
+        $this->assertJsonContains([
+            'id' => (string) $manga->getId(),
+            'title' => 'One Piece',
+            'slug' => 'one-piece',
+            'description' => 'Description',
+            'author' => 'Eiichiro Oda',
+            'publicationYear' => 1997,
+            'genres' => ['Action', 'Adventure'],
+            'status' => 'ongoing',
+            'imageUrl' => 'https://example.com/image.jpg',
+            'rating' => 4.5
+        ]);
+    }
+
+    public function testGetMangaBySlugReturns404WhenMangaNotFound(): void
+    {
+        // Act
+        static::createClient()->request('GET', '/api/mangas/by-slug/non-existent-manga');
+        
+        // Assert
+        $this->assertResponseStatusCodeSame(Response::HTTP_NOT_FOUND);
+    }
+}