1 files changed, 8 insertions, 0 deletions
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));
+    }
 }