first commit

tests/Post/PostExtensionTest.php

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+<?php
+declare(strict_types=1);
+
+namespace Tests\Post;
+
+use App\Post\Post;
+use App\Post\PostExtension;
+use PHPUnit\Framework\TestCase;
+use Twig\TwigFunction;
+
+final class PostExtensionTest extends TestCase
+{
+    /** @var array<string, TwigFunction> */
+    private array $functions;
+
+    protected function setUp(): void
+    {
+        $extension = new PostExtension();
+        $this->functions = [];
+
+        foreach ($extension->getFunctions() as $function) {
+            $this->functions[$function->getName()] = $function;
+        }
+    }
+
+    public function testPostUrlUsesStoredSlug(): void
+    {
+        $post = new Post(1, 'Mon article', '<p>Contenu</p>', 'mon-article-2');
+
+        self::assertSame('/article/mon-article-2', $this->call('post_url', $post));
+    }
+
+    public function testPostExcerptKeepsSafeTagsAndTruncatesHtml(): void
+    {
+        $html = '<p><strong>Bonjour</strong> <script>alert(1)</script><em>monde</em> ' . str_repeat('x', 30) . '</p>';
+        $post = new Post(1, 'Titre', $html, 'titre');
+
+        $excerpt = $this->call('post_excerpt', $post, 20);
+
+        self::assertStringContainsString('<strong>Bonjour</strong>', $excerpt);
+        self::assertStringContainsString('<em>', $excerpt);
+        self::assertStringNotContainsString('<script>', $excerpt);
+        self::assertStringEndsWith('…', $excerpt);
+    }
+
+    public function testPostThumbnailReturnsFirstImageSource(): void
+    {
+        $post = new Post(1, 'Titre', '<p><img src="/media/a.webp" alt="a"><img src="/media/b.webp"></p>', 'titre');
+
+        self::assertSame('/media/a.webp', $this->call('post_thumbnail', $post));
+    }
+
+    public function testPostThumbnailReturnsNullWhenMissing(): void
+    {
+        $post = new Post(1, 'Titre', '<p>Sans image</p>', 'titre');
+
+        self::assertNull($this->call('post_thumbnail', $post));
+    }
+
+    public function testPostInitialsUseMeaningfulWordsAndFallback(): void
+    {
+        $post = new Post(1, 'Article de Blog', '<p>Contenu</p>', 'slug');
+        $single = new Post(2, 'A B', '<p>Contenu</p>', 'slug-2');
+        $emptyLike = new Post(3, 'A', '<p>Contenu</p>', 'slug-3');
+
+        self::assertSame('AB', $this->call('post_initials', $post));
+        self::assertSame('A', $this->call('post_initials', $single));
+        self::assertSame('A', $this->call('post_initials', $emptyLike));
+    }
+
+    private function call(string $name, mixed ...$args): mixed
+    {
+        $callable = $this->functions[$name]->getCallable();
+
+        return $callable(...$args);
+    }
+}