diff --git a/module/admin/test/lib/admin.unittest.class.php b/module/admin/test/lib/admin.unittest.class.php
index 8601e47d2a..a578bad4a4 100644
--- a/module/admin/test/lib/admin.unittest.class.php
+++ b/module/admin/test/lib/admin.unittest.class.php
@@ -286,4 +286,23 @@ class adminTest
 
         return $result;
     }
+
+    /**
+     * Test syncPublicClasses method.
+     *
+     * @param  int $limit
+     * @access public
+     * @return mixed
+     */
+    public function syncPublicClassesTest(int $limit = 3)
+    {
+        $reflection = new ReflectionClass($this->objectZen);
+        $method = $reflection->getMethod('syncPublicClasses');
+        $method->setAccessible(true);
+        
+        $result = $method->invoke($this->objectZen, $limit);
+        if(dao::isError()) return dao::getError();
+
+        return $result;
+    }
 }
diff --git a/module/admin/test/zen/syncpublicclasses.php b/module/admin/test/zen/syncpublicclasses.php
new file mode 100755
index 0000000000..54e7c408d4
--- /dev/null
+++ b/module/admin/test/zen/syncpublicclasses.php
@@ -0,0 +1,29 @@
+#!/usr/bin/env php
+<?php
+
+/**
+
+title=测试 adminZen::syncPublicClasses();
+timeout=0
+cid=0
+
+- 执行adminTest模块的syncPublicClassesTest方法，参数是3  @1
+- 执行adminTest模块的syncPublicClassesTest方法，参数是1  @1
+- 执行adminTest模块的syncPublicClassesTest方法  @1
+- 执行adminTest模块的syncPublicClassesTest方法，参数是10  @1
+- 执行adminTest模块的syncPublicClassesTest方法，参数是-1  @1
+
+*/
+
+include dirname(__FILE__, 5) . '/test/lib/init.php';
+include dirname(__FILE__, 2) . '/lib/admin.unittest.class.php';
+
+su('admin');
+
+$adminTest = new adminTest();
+
+r($adminTest->syncPublicClassesTest(3)) && p() && e('1');
+r($adminTest->syncPublicClassesTest(1)) && p() && e('1');
+r($adminTest->syncPublicClassesTest(0)) && p() && e('1');
+r($adminTest->syncPublicClassesTest(10)) && p() && e('1');
+r($adminTest->syncPublicClassesTest(-1)) && p() && e('1');
\ No newline at end of file