From f2011381e9ed08feaad59de85417731e98ea9c24 Mon Sep 17 00:00:00 2001
From: Zhineng Li <im@zhineng.li>
Date: Wed, 21 Jan 2026 16:09:27 +0800
Subject: test built-in data

---
 tests/RegionManagerTest.php | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tests/RegionManagerTest.php b/tests/RegionManagerTest.php
index bf2a5be..f44f6be 100644
--- a/tests/RegionManagerTest.php
+++ b/tests/RegionManagerTest.php
@@ -45,4 +45,12 @@ final class RegionManagerTest extends TestCase
         $manager = new RegionManager([], [], []);
         $manager->getNodes(1);
     }
+
+    public function test_create_from_built_in_data(): void
+    {
+        $manager = RegionManager::createFromBuiltIn();
+        $this->assertContains(110000, $manager->getTopLevelNodes());
+        $this->assertNotEmpty($manager->getNodes(110000));
+        $this->assertSame('北京市', $manager->getName(110000));
+    }
 }
-- 
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