diff --git a/tests/Unit/Node/UseCases/CreateNodeTest.php b/tests/Unit/Node/UseCases/CreateNodeTest.php
index 68d4dfa..5b9226e 100644
--- a/tests/Unit/Node/UseCases/CreateNodeTest.php
+++ b/tests/Unit/Node/UseCases/CreateNodeTest.php
@@ -2,6 +2,7 @@
 
 namespace Tests\Unit\Node\UseCases;
 
+use App\Exceptions\BadRequestException;
 use App\Node\Node;
 use App\Node\NodeRepository;
 use App\Node\UseCases\CreateNode;
@@ -111,4 +112,28 @@ class CreateNodeTest extends TestCase
             parentNodeId: null,
         ));
     }
+
+    public function test_throws_if_text_id_is_null(): void
+    {
+        $this->expectException(BadRequestException::class);
+        $this->expectExceptionMessage('textId is required');
+
+        $this->useCase->execute(new CreateNodeRequest(
+            textId: null,
+            title: 'test',
+            parentNodeId: null,
+        ));
+    }
+
+    public function test_throws_if_title_is_null(): void
+    {
+        $this->expectException(BadRequestException::class);
+        $this->expectExceptionMessage('title is required');
+
+        $this->useCase->execute(new CreateNodeRequest(
+            textId: 0,
+            title: null,
+            parentNodeId: null,
+        ));
+    }
 }