diff --git a/test/class/product.class.php b/test/class/product.class.php
index faaf1fb037..277b07545b 100644
--- a/test/class/product.class.php
+++ b/test/class/product.class.php
@@ -1030,4 +1030,70 @@ class productTest
             return $data;
         }
     }
+
+    /**
+     * Test change the projects set of the program.
+     *
+     * @param  int    $productID
+     * @access public
+     * @return object
+     */
+    public function updateProjectsTest($productID)
+    {
+        $singleLinkProjects   = array();
+        $multipleLinkProjects = array();
+
+        global $tester;
+        /* Get the projects linked with this product. */
+        $projectPairs = $tester->dao->select('t2.id,t2.name')->from(TABLE_PROJECTPRODUCT)->alias('t1')
+            ->leftJoin(TABLE_PROJECT)->alias('t2')->on('t1.project = t2.id')
+            ->where('t1.product')->eq($productID)
+            ->andWhere('t2.type')->eq('project')
+            ->andWhere('t2.deleted')->eq('0')
+            ->fetchPairs();
+
+        $projects = ',';
+        if(!empty($projectPairs))
+        {
+            foreach($projectPairs as $projectID => $projectName)
+            {
+                $projects .= $projectID . ',';
+                $products = $tester->dao->select('product')->from(TABLE_PROJECTPRODUCT)->where('project')->eq($projectID)->fetchPairs();
+                if(count($products) == 1)
+                {
+                    $singleLinkProjects[$projectID] = $projectName;
+                }
+
+                if(count($products) > 1)
+                {
+                    $multipleLinkProjects[$projectID] = $projectName;
+                }
+            }
+        }
+
+        $_POST['changeProjects'] = $projects;
+
+        $product = $this->objectModel->getById($productID);
+        $_POST['program'] = $product->program == 1 ? 2 : 1;
+
+        $this->objectModel->updateProjects($productID, $singleLinkProjects, $multipleLinkProjects);
+
+        $object = $tester->dao->select('t2.id,t2.parent,t2.path')->from(TABLE_PROJECTPRODUCT)->alias('t1')
+            ->leftJoin(TABLE_PROJECT)->alias('t2')->on('t1.project = t2.id')
+            ->where('t1.product')->eq($productID)
+            ->andWhere('t2.type')->eq('project')
+            ->andWhere('t2.deleted')->eq('0')
+            ->fetchAll();
+
+        unset($_POST);
+
+        if(dao::isError())
+        {
+            return dao::getError();
+        }
+        else
+        {
+            return $object;
+        }
+    }
 }
diff --git a/test/model/product/updateprojects.php b/test/model/product/updateprojects.php
new file mode 100755
index 0000000000..e68682421d
--- /dev/null
+++ b/test/model/product/updateprojects.php
@@ -0,0 +1,22 @@
+#!/usr/bin/env php
+<?php
+include dirname(dirname(dirname(__FILE__))) . '/lib/init.php'; su('admin');
+include dirname(dirname(dirname(__FILE__))) . '/class/product.class.php';
+
+/**
+
+title=测试productModel->updateProjects();
+cid=1
+pid=1
+
+*/
+$productIDList = array('101', '102', '103', '111', '112');
+
+$product = new productTest('admin');
+
+r($product->updateProjectsTest($productIDList[0])) && p('0:id,parent,path')                                                                     && e('731,1,,1,731,');                                                         // 测试更新产品101的项目信息
+r($product->updateProjectsTest($productIDList[1])) && p('0:id,parent,path')                                                                     && e('0');                                                                     // 测试更新产品102的项目信息
+r($product->updateProjectsTest($productIDList[2])) && p('0:id,parent,path')                                                                     && e('0');                                                                     // 测试更新产品103的项目信息
+r($product->updateProjectsTest($productIDList[3])) && p('0:id,parent,path;1:id,parent,path;2:id,parent,path;3:id,parent,path;4:id,parent,path') && e('733,1,,1,733,;734,1,,1,734,;735,1,,1,735,;736,1,,1,736,;737,1,,1,737,'); // 测试更新产品111的项目信息
+r($product->updateProjectsTest($productIDList[4])) && p('0:id,parent,path;1:id,parent,path;2:id,parent,path;3:id,parent,path;4:id,parent,path') && e('738,1,,1,738,;739,1,,1,739,;740,1,,1,740,;741,1,,1,741,;742,1,,1,742,'); // 测试更新产品112的项目信息
+system("./ztest init");