test bulk create nodes throws if count is less than one

tests/Unit/Node/UseCases/BulkCreateNodesTest.php

@@ -184,4 +184,17 @@ class BulkCreateNodesTest extends TestCase
             count: null,
         ));
     }
+
+    public function test_throws_if_count_is_less_than_one(): void
+    {
+        $this->expectException(BadRequestException::class);
+        $this->expectExceptionMessage('count must be at least 1');
+
+        $this->useCase->execute(new BulkCreateNodesRequest(
+            textId: 0,
+            parentNodeId: $this->parentNode->getId(),
+            titlePrefix: 'Page',
+            count: 0,
+        ));
+    }
 }