diff --git a/src/Document.php b/src/Document.php
index 1e66fbc..75a2926 100644
--- a/src/Document.php
+++ b/src/Document.php
@@ -8,8 +8,9 @@ use PHPUnit\Framework\Assert;
 use ReflectionClass;
 use ReflectionMethod;
 use ReflectionProperty;
+use Spatie\LaravelData\Data;
 
-abstract class Document
+abstract class Document extends Data
 {
     abstract public function basename(): string;
 
@@ -35,6 +36,15 @@ abstract class Document
         );
     }
 
+    public function assertIsContent(string $content): void
+    {
+        Assert::assertEquals(
+            $content,
+            $this->renderBody(),
+            "Failed asserting that Content is {$content}"
+        );
+    }
+
     /**
      * @param array<int, string> $content
      */
@@ -80,12 +90,12 @@ abstract class Document
 
     public function filename(): string
     {
-        return $this->basename().'.tex';
+        return $this->basename() . '.tex';
     }
 
     public function compiledFilename(): string
     {
-        return $this->basename().'.pdf';
+        return $this->basename() . '.pdf';
     }
 
     /**
@@ -144,8 +154,8 @@ abstract class Document
     protected function createVariableFromMethod(ReflectionMethod $method): Closure|InvokableComponentVariable
     {
         return 0 === $method->getNumberOfParameters()
-                        ? $this->createInvokableVariable($method->getName())
-                        : Closure::fromCallable([$this, $method->getName()]);
+            ? $this->createInvokableVariable($method->getName())
+            : Closure::fromCallable([$this, $method->getName()]);
     }
 
     protected function createInvokableVariable(string $method): InvokableComponentVariable