Added extra tests

lib/Docs/CodeBlockLanguageDetector.php

@@ -9,7 +9,8 @@ use Highlight\Highlighter;
 use function sprintf;
 use function trim;
 
-final readonly class CodeBlockLanguageDetector
+/** @final */
+readonly class CodeBlockLanguageDetector
 {
     /**
      * We use some language aliases not supported by our highlighter library

lib/Twig/MainExtension.php

@@ -18,6 +18,7 @@ use Twig\TwigFunction;
 use Twig\TwigTest;
 
 use function assert;
+use function explode;
 use function file_get_contents;
 use function is_int;
 use function is_string;
@@ -36,7 +37,7 @@ final class MainExtension extends AbstractExtension
         private readonly AssetIntegrityGenerator $assetIntegrityGenerator,
         private readonly string $sourceDir,
         private readonly string $webpackBuildDir,
-        private readonly CodeBlockLanguageDetector $codeBlockLanguageDetector
+        private readonly CodeBlockLanguageDetector $codeBlockLanguageDetector,
     ) {
     }
 
@@ -49,7 +50,7 @@ final class MainExtension extends AbstractExtension
             new TwigFunction('get_webpack_asset_url', [$this, 'getWebpackAssetUrl']),
             new TwigFunction('get_asset_integrity', [$this->assetIntegrityGenerator, 'getAssetIntegrity']),
             new TwigFunction('get_webpack_asset_integrity', [$this->assetIntegrityGenerator, 'getWebpackAssetIntegrity']),
-            new TwigFunction('code_block_language', fn (string|null $language, string|null $code) => $this->codeBlockLanguageDetector->detectLanguage($language ?? "php", $code !== null ? explode("\n", $code) : [])),
+            new TwigFunction('code_block_language', [$this, 'detectCodeBlockLanguage']),
         ];
     }
 
@@ -136,4 +137,12 @@ final class MainExtension extends AbstractExtension
     {
         return $node instanceof TocNode;
     }
+
+    public function detectCodeBlockLanguage(string|null $language, string|null $code): string
+    {
+        return $this->codeBlockLanguageDetector->detectLanguage(
+            $language ?? 'php',
+            $code !== null ? explode("\n", $code) : [],
+        );
+    }
 }

tests/Twig/MainExtensionTest.php

@@ -6,10 +6,13 @@ namespace Doctrine\Website\Tests\Twig;
 
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Website\Assets\AssetIntegrityGenerator;
+use Doctrine\Website\Docs\CodeBlockLanguageDetector;
 use Doctrine\Website\Model\ProjectVersion;
 use Doctrine\Website\Tests\TestCase;
 use Doctrine\Website\Twig\MainExtension;
 use Parsedown;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\MockObject\MockObject;
 
 class MainExtensionTest extends TestCase
 {
@@ -22,19 +25,22 @@ class MainExtensionTest extends TestCase
     private string $webpackBuildDir;
 
     private MainExtension $mainExtension;
+    private CodeBlockLanguageDetector&MockObject $codeblockLanguageDetector;
 
     protected function setUp(): void
     {
-        $this->parsedown               = $this->createMock(Parsedown::class);
-        $this->assetIntegrityGenerator = $this->createMock(AssetIntegrityGenerator::class);
-        $this->sourceDir               = __DIR__ . '/../../source';
-        $this->webpackBuildDir         = __DIR__ . '/../../.webpack-build';
+        $this->parsedown                 = $this->createMock(Parsedown::class);
+        $this->assetIntegrityGenerator   = $this->createMock(AssetIntegrityGenerator::class);
+        $this->codeblockLanguageDetector = $this->createMock(CodeBlockLanguageDetector::class);
+        $this->sourceDir                 = __DIR__ . '/../../source';
+        $this->webpackBuildDir           = __DIR__ . '/../../.webpack-build';
 
         $this->mainExtension = new MainExtension(
             $this->parsedown,
             $this->assetIntegrityGenerator,
             $this->sourceDir,
             $this->webpackBuildDir,
+            $this->codeblockLanguageDetector,
         );
     }
 
@@ -76,4 +82,40 @@ class MainExtensionTest extends TestCase
 
         self::assertMatchesRegularExpression('#^http://lcl.doctrine-project.org/js/main.js\?[a-z0-9+]{6}$#', $url);
     }
+
+    /** @param string[] $lines */
+    #[DataProvider('codeDetectionDataProvider')]
+    public function testDetectCodeBlockLanguage(string|null $language, string|null $code, array $lines): void
+    {
+        $this->codeblockLanguageDetector->expects(self::once())
+            ->method('detectLanguage')
+            ->with($language ?? 'php', $lines)
+            ->willReturn('php');
+
+        $language = $this->mainExtension->detectCodeBlockLanguage($language, $code);
+
+        self::assertSame('php', $language);
+    }
+
+    /** @return array<array{string|null, string|null, array<string>}> */
+    public static function codeDetectionDataProvider(): array
+    {
+        return [
+            [
+                'php',
+                'code',
+                ['code'],
+            ],
+            [
+                null,
+                'code',
+                ['code'],
+            ],
+            [
+                'sql',
+                null,
+                [],
+            ],
+        ];
+    }
 }