fix + test

src/ViewRenderer.php

@@ -60,7 +60,7 @@ public function __construct(
         private DataResponseFactoryInterface $responseFactory,
         private Aliases $aliases,
         private WebView $view,
-        ?string $viewPath,
+        ?string $viewPath = null,
         private ?string $layout = null,
         private array $injections = []
     ) {

tests/ViewRendererTest.php

@@ -6,6 +6,7 @@
 
 use HttpSoft\Message\ResponseFactory;
 use HttpSoft\Message\StreamFactory;
+use LogicException;
 use PHPUnit\Framework\TestCase;
 use ReflectionObject;
 use RuntimeException;
@@ -466,6 +467,19 @@ public function testRenderParametersNotOverrideLayout(): void
         $this->assertEqualStringsIgnoringLineEndings($expected, (string) $response->getBody());
     }
 
+    public function testWithoutViewPath(): void
+    {
+        $viewRenderer = new ViewRenderer(
+            new DataResponseFactory(new ResponseFactory(), new StreamFactory()),
+            new Aliases(),
+            new WebView(__DIR__, new SimpleEventDispatcher()),
+        );
+
+        $this->expectException(LogicException::class);
+        $this->expectExceptionMessage('The view path is not set.');
+        $viewRenderer->getViewPath();
+    }
+
     public function testImmutability(): void
     {
         $original = $this->getRenderer();