1 files changed, 52 insertions, 0 deletions
diff --git a/tests/RegionManagerTest.php b/tests/RegionManagerTest.php
new file mode 100644
index 0000000..2536a7c
--- /dev/null
+++ b/tests/RegionManagerTest.php
@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Zhineng\Region\Tests;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\TestCase;
+use Zhineng\Region\RegionException;
+use Zhineng\Region\RegionManager;
+
+#[CoversClass(RegionManager::class)]
+final class RegionManagerTest extends TestCase
+{
+    public function test_name_resolution(): void
+    {
+        $manager = new RegionManager(
+            ['_110000' => '北京市'],
+            [],
+            []
+        );
+        $this->assertSame('北京市', $manager->getName(110000));
+    }
+
+    public function test_name_resolution_with_non_existent_code(): void
+    {
+        $this->expectException(RegionException::class);
+        $this->expectExceptionMessage('The region code does not exist.');
+        $manager = new RegionManager([], [], []);
+        $manager->getName(110000);
+    }
+
+    public function test_top_level_nodes_resolution(): void
+    {
+        $manager = new RegionManager([], [], [1, 2, 3]);
+        $this->assertSame([1, 2, 3], $manager->getTopLevelNodes());
+    }
+
+    public function test_nodes_resolution(): void
+    {
+        $manager = new RegionManager([], ['_1' => [2]], []);
+        $this->assertSame([2], $manager->getNodes(1));
+    }
+
+    public function test_nodes_resolution_with_non_existent_code(): void
+    {
+        $this->expectException(RegionException::class);
+        $this->expectExceptionMessage('Could not find any nodes under the region code.');
+        $manager = new RegionManager([], [], []);
+        $manager->getNodes(1);
+    }
+}