+ [misc] Add unit tests for treeZen::setRoot() method

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

module/tree/test/lib/treezen.unittest.class.php

@@ -18,9 +18,11 @@ class treeTest
      */
     public function setRootTest(int $rootID = 0, string $viewType = '', string $branch = '')
     {
+        ob_start();
         $method = $this->objectZen->getMethod('setRoot');
         $method->setAccessible(true);
         $result = $method->invokeArgs($this->objectZen->newInstance(), array($rootID, $viewType, $branch));
+        ob_end_clean();
         if(dao::isError()) return dao::getError();
 
         return $result;

module/tree/test/zen/setroot.php

@@ -0,0 +1,41 @@
+#!/usr/bin/env php
+<?php
+
+/**
+
+title=测试 treeZen::setRoot();
+timeout=0
+cid=0
+
+- 执行treeTest模块的setRootTest方法，参数是0, 'line', '' 属性rootType @line
+- 执行treeTest模块的setRootTest方法，参数是0, 'host', '' 属性rootType @line
+- 执行treeTest模块的setRootTest方法，参数是0, 'datasource', '' 属性rootType @line
+- 执行treeTest模块的setRootTest方法，参数是1, 'caselib', '' 属性rootType @lib
+- 执行treeTest模块的setRootTest方法，参数是1, 'story', '' 属性rootType @product
+
+*/
+
+include dirname(__FILE__, 5) . '/test/lib/init.php';
+include dirname(__FILE__, 2) . '/lib/treezen.unittest.class.php';
+
+zenData('product')->loadYaml('product', false, 2)->gen(10);
+zenData('testsuite')->loadYaml('testsuite', false, 2)->gen(5);
+
+su('admin');
+
+$treeTest = new treeTest();
+
+// 测试步骤1: 测试viewType='line'的情况,应返回产品线对象,rootType为line
+r($treeTest->setRootTest(0, 'line', '')) && p('rootType') && e('line');
+
+// 测试步骤2: 测试viewType='host'的情况,应返回主机分组维护对象,rootType为line
+r($treeTest->setRootTest(0, 'host', '')) && p('rootType') && e('line');
+
+// 测试步骤3: 测试viewType='datasource'的情况,应返回管理对象,rootType为line
+r($treeTest->setRootTest(0, 'datasource', '')) && p('rootType') && e('line');
+
+// 测试步骤4: 测试viewType包含'caselib'的情况,应返回用例库对象,rootType为lib
+r($treeTest->setRootTest(1, 'caselib', '')) && p('rootType') && e('lib');
+
+// 测试步骤5: 测试viewType='story'的情况,应返回产品对象,rootType为product
+r($treeTest->setRootTest(1, 'story', '')) && p('rootType') && e('product');