diff --git a/tests/Unit/Node/UseCases/CreateNodeTest.php b/tests/Unit/Node/UseCases/CreateNodeTest.php
index 61c5386..ef6f793 100644
--- a/tests/Unit/Node/UseCases/CreateNodeTest.php
+++ b/tests/Unit/Node/UseCases/CreateNodeTest.php
@@ -37,10 +37,13 @@ class CreateNodeTest extends TestCase
         $node = $this->useCase->execute(new CreateNodeRequest(
             textId: 0,
             title: 'test',
+            parentNodeId: null,
         ));
         $this->assertInstanceOf(NodeRepository::class, $this->nodeRepo);
         $this->assertInstanceOf(Node::class, $node);
         $this->assertEquals('test', $node->getTitle());
+        $this->assertEquals(0, $node->getId());
+        $this->assertEquals(null, $node->getParentNode());
     }
 
     public function test_node_belongs_to_text(): void
@@ -48,6 +51,7 @@ class CreateNodeTest extends TestCase
         $node = $this->useCase->execute(new CreateNodeRequest(
             textId: 0,
             title: 'test',
+            parentNodeId: null,
         ));
         $this->assertInstanceOf(Text::class, $node->getText());
     }
@@ -58,6 +62,25 @@ class CreateNodeTest extends TestCase
         $node = $this->useCase->execute(new CreateNodeRequest(
             textId: 1,
             title: 'test',
+            parentNodeId: null,
         ));
     }
+
+    public function test_has_parent_node(): void
+    {
+        $node1 = $this->useCase->execute(new CreateNodeRequest(
+            textId: 0,
+            title: 'test',
+            parentNodeId: null,
+        ));
+        $node2 = $this->useCase->execute(new CreateNodeRequest(
+            textId: 0,
+            title: 'test',
+            parentNodeId: $node1->getId(),
+        ));
+        $this->assertEquals(
+            $node1->getId(),
+            $node2->getParentNode()->getId()
+        );
+    }
 }