* Add switchDB by tests.

test/model/task/batchchangemodule.php

@@ -2,6 +2,7 @@
 <?php
 include dirname(dirname(dirname(__FILE__))) . '/lib/init.php';
 include dirname(dirname(dirname(__FILE__))) . '/class/task.class.php';
+$db->switchDB();
 su('admin');
 
 /**
@@ -19,4 +20,4 @@ $taskIDList  = array('1','2','3');
 
 $task = new taskTest();
 r($task->batchChangeModuleTest($taskIDList,$moduleID))  && p('0:field,old,new') && e('module,21,22');   // 返回批量修改的第一个值
-system("./ztest init");
+$db->restoreDB();