test bulk create nodes validates null fields

tests/Unit/Node/UseCases/BulkCreateNodesTest.php

@@ -2,6 +2,7 @@
 
 namespace Tests\Unit\Node\UseCases;
 
+use App\Exceptions\BadRequestException;
 use App\Node\CreateNodeDto;
 use App\Node\Node;
 use App\Node\UseCases\BulkCreateNodes;
@@ -131,4 +132,56 @@ class BulkCreateNodesTest extends TestCase
             count: 5,
         ));
     }
+
+    public function test_throws_if_text_id_is_null(): void
+    {
+        $this->expectException(BadRequestException::class);
+        $this->expectExceptionMessage('textId is required');
+
+        $this->useCase->execute(new BulkCreateNodesRequest(
+            textId: null,
+            parentNodeId: $this->parentNode->getId(),
+            titlePrefix: 'Page',
+            count: 5,
+        ));
+    }
+
+    public function test_throws_if_parent_node_id_is_null(): void
+    {
+        $this->expectException(BadRequestException::class);
+        $this->expectExceptionMessage('parentNodeId is required');
+
+        $this->useCase->execute(new BulkCreateNodesRequest(
+            textId: 0,
+            parentNodeId: null,
+            titlePrefix: 'Page',
+            count: 5,
+        ));
+    }
+
+    public function test_throws_if_title_prefix_is_null(): void
+    {
+        $this->expectException(BadRequestException::class);
+        $this->expectExceptionMessage('titlePrefix is required');
+
+        $this->useCase->execute(new BulkCreateNodesRequest(
+            textId: 0,
+            parentNodeId: $this->parentNode->getId(),
+            titlePrefix: null,
+            count: 5,
+        ));
+    }
+
+    public function test_throws_if_count_is_null(): void
+    {
+        $this->expectException(BadRequestException::class);
+        $this->expectExceptionMessage('count is required');
+
+        $this->useCase->execute(new BulkCreateNodesRequest(
+            textId: 0,
+            parentNodeId: $this->parentNode->getId(),
+            titlePrefix: 'Page',
+            count: null,
+        ));
+    }
 }