运行symfony单元测试返回“没有打开的连接”

all:
  doctrine:
    class: sfDoctrineDatabase
    param:
      dsn: 'mysql:host=localhost;dbname=ms'
      username: ms
      password: xxx
test:
  doctrine:
    class: sfDoctrineDatabase
    param:
      dsn: 'mysql:host=localhost;dbname=ms'
      username: ms
      password: xxx
...

位于(test/unit/MSTest.php)的测试文件如下所示:

require_once dirname(__FILE__).'/../bootstrap/unit.php';
$a = new Article();
$a->setHeadline("Article Headline");
$a->save();

C:\phpworkspace\ms>php test/unit/MSTest.php

Fatal error: Uncaught exception 'Doctrine_Connection_Exception' with message 'There is no open connection' in C:\phpworkspace\ms\lib\vendor\symfony\lib\plugins\sfDoctrinePlugin\lib\vendor\doctrine\Doctrine\Manager.php:662
Stack trace:
#0 C:\phpworkspace\ms\lib\vendor\symfony\lib\plugins\sfDoctrinePlugin\lib\vendor\doctrine\Doctrine\Manager.php(557): Doctrine_Manager->getCurrentConnection()
#1 C:\phpworkspace\ms\lib\vendor\symfony\lib\plugins\sfDoctrinePlugin\lib\vendor\doctrine\Doctrine\Core.php(1095): Doctrine_Manager->getConnectionForComponent('Article')
#2 C:\phpworkspace\ms\lib\vendor\symfony\lib\plugins\sfDoctrinePlugin\lib\vendor\doctrine\Doctrine\Record.php(219): Doctrine_Core::getTable('Article')
#3 C:\phpworkspace\ms\test\unit\UniversalDemoTest.php(15)
: Doctrine_Record->__construct()
#4 {main}
  thrown in C:\phpworkspace\ms\lib\vendor\symfony\lib\plugins\sfDoctrinePlugin\lib\vendor\doctrine\Doctrine\Manager.php on line 662

我在谷歌上搜索了一下,似乎所有的提示都指向database.yml test:environment,这个环境(见上图)。我在命令行上测试了username/password/db name,用户确实有效。这个 other solution described here 替换unit.php中

$configuration = ProjectConfiguration::hasActive() ?
  ProjectConfiguration::getActive() :
  new ProjectConfiguration(realpath($_test_dir.'/..')); 

$configuration = ProjectConfiguration::getApplicationConfiguration(
  'frontend', 'test', true
); 

我正在用symfony1.4(XAMPP)运行php5.3.1、mysql 5.1.41。