diff --git a/module/file/test/lib/filezen.unittest.class.php b/module/file/test/lib/filezen.unittest.class.php
new file mode 100644
index 0000000000..33da764bac
--- /dev/null
+++ b/module/file/test/lib/filezen.unittest.class.php
@@ -0,0 +1,33 @@
+<?php
+class fileZenTest
+{
+    public $fileZenTest;
+    public $tester;
+    function __construct()
+    {
+        global $tester;
+        $this->tester = $tester;
+        $tester->app->setModuleName('file');
+        $tester->loadModel('file');
+
+        $this->fileZenTest = initReference('file');
+    }
+
+    /**
+     * Test getDownloadMode method.
+     *
+     * @param  object $file  文件对象
+     * @param  string $mouse 鼠标操作类型
+     * @access public
+     * @return string
+     */
+    public function getDownloadModeZenTest($file = null, string $mouse = ''): string
+    {
+        $method = $this->fileZenTest->getMethod('getDownloadMode');
+        $method->setAccessible(true);
+
+        $result = $method->invokeArgs($this->fileZenTest->newInstance(), array($file, $mouse));
+        if(dao::isError()) return dao::getError();
+        return $result;
+    }
+}
\ No newline at end of file
diff --git a/module/file/test/zen/getdownloadmode.php b/module/file/test/zen/getdownloadmode.php
new file mode 100755
index 0000000000..5b5356c9a9
--- /dev/null
+++ b/module/file/test/zen/getdownloadmode.php
@@ -0,0 +1,49 @@
+#!/usr/bin/env php
+<?php
+
+/**
+
+title=测试 fileZen::getDownloadMode();
+timeout=0
+cid=0
+
+- 步骤1：图片文件左键点击 @open
+- 步骤2：文本文件左键点击 @open
+- 步骤3：视频文件左键点击 @open
+- 步骤4：图片文件右键点击 @down
+- 步骤5：不支持文件类型左键点击 @down
+
+*/
+
+// 1. 导入依赖（路径固定，不可修改）
+include dirname(__FILE__, 5) . '/test/lib/init.php';
+include dirname(__FILE__, 2) . '/lib/filezen.unittest.class.php';
+
+// 2. 用户登录（选择合适角色）
+su('admin');
+
+// 3. 创建测试实例（变量名与模块名一致）
+$fileTest = new fileZenTest();
+
+// 4. 创建测试文件对象
+$jpgFile = new stdclass();
+$jpgFile->extension = 'jpg';
+
+$txtFile = new stdclass();
+$txtFile->extension = 'txt';
+
+$mp4File = new stdclass();
+$mp4File->extension = 'mp4';
+
+$docFile = new stdclass();
+$docFile->extension = 'doc';
+
+$pngFile = new stdclass();
+$pngFile->extension = 'png';
+
+// 5. 🔴 强制要求：必须包含至少5个测试步骤
+r($fileTest->getDownloadModeZenTest($jpgFile, 'left')) && p() && e('open');  // 步骤1：图片文件左键点击
+r($fileTest->getDownloadModeZenTest($txtFile, 'left')) && p() && e('open');  // 步骤2：文本文件左键点击
+r($fileTest->getDownloadModeZenTest($mp4File, 'left')) && p() && e('open');  // 步骤3：视频文件左键点击
+r($fileTest->getDownloadModeZenTest($jpgFile, 'right')) && p() && e('down'); // 步骤4：图片文件右键点击
+r($fileTest->getDownloadModeZenTest($docFile, 'left')) && p() && e('down');  // 步骤5：不支持文件类型左键点击
\ No newline at end of file