diff --git a/tests/TestCase.php b/tests/TestCase.php
index 7587d89..19d0ac9 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -15,8 +15,6 @@
 
 namespace ip2region\Tests;
 
-use ip2region\XdbSearcher;
-
 class TestCase extends \PHPUnit\Framework\TestCase
 {
     public static function now()
@@ -24,24 +22,4 @@ class TestCase extends \PHPUnit\Framework\TestCase
         return microtime(true) * 1000;
     }
 
-    public function test()
-    {
-        $ip = '1.2.3.4';
-        $xdb = './ip2region.xdb';
-        try {
-            // 1、加载整个 xdb 到内存。
-            $cBuff = XdbSearcher::loadContentFromFile($xdb);
-            if (null === $cBuff) {
-                throw new \RuntimeException("failed to load content buffer from '$xdb'");
-            }
-            // 2、使用全局的 cBuff 创建带完全基于内存的查询对象。
-            $searcher = XdbSearcher::newWithBuffer($cBuff);
-            // 3、查询
-            $region = $searcher->search($ip);
-            var_dump($region);
-        } catch (\Exception $e) {
-            var_dump($e->getMessage());
-        }
-    }
-
 }