Weird error when running phpUnit test suite from Zend Studio 8 - php

Question

Zend Studio 8 has phpUnit integration and a dedicated view, which is great, so I would like to use it... but:
When I run my phpunit.xml on the command line, the tests are executed just fine, when I try to run phpunit.xml in Zend Studio as unit test, I get the following fatal error:
Fatal error: Uncaught exception
'PHPUnit_Framework_Error' with message
'Assigning the return value of new by
reference is deprecated' in C:\Program
Files
(x86)\Zend\ZendServer\bin\PEAR\PEAR\Config.php:650
Stack trace:
#0 C:\Program Files
(x86)\Zend\ZendServer\bin\PEAR\PEAR\RunTest.php(22):
ZendPHPUnitErrorHandler->handle(8192,
'Assigning the r...', 'C:\Program
File...', 650, Array)
#1 C:\Program
Files
(x86)\Zend\ZendServer\bin\PEAR\PEAR\RunTest.php(22):
require_once()
#2 C:\Program Files
(x86)\Zend\ZendServer\bin\PEAR\PHPUnit\Extensions\PhptTestCase.php(49):
require_once('C:\Program File...')
#3
C:\Program Files (x86)\Zend\Zend
Studio -
8.0.0\plugins\com.zend.php.phpunit_8.0.0.v20101001-0100\resources\ZendPHPUnit.php(103):
require_once('C:\Program File...')
#4
{main} thrown in C:\Program Files
(x86)\Zend\ZendServer\bin\PEAR\PEAR\Config.php
on line 650
I really don't have a clue what that means... why should some deprecated code in the PEAR config keep my tests from running?
[edit]
Some additional information:
My colleague who has neither PEAR nor phpunit installed, can run unit tests from Zend Studio 8 just fine but he can't run any from the CLI. So it seems that Zend Studio not only integrates with phpUnit but comes bundled with a version of it. I wanted the newest version and that's why I installed PEAR and then via PEAR I installed phpUnit. As a consequence, the phpUnit library of Zend Studio was outdated and I had to replace the file 'ZendPHPUnit.php' in the Zend Studio plugin folder with a version of a Zend Forum user. This lead to correct inclusion of the phpUnit classes and the current problem.
[/edit]

Answer 1

Line 650 in PEAR\Config.php does
$this->_registry['default'] = &new PEAR_Registry(
$this->configuration['default']['php_dir']
);
This will raise an E_DEPRECATED message depending on whether you have enabled error_reporting to include that level. The error handlers of PHPUnit and ZendPHPUnit will convert those to PHPUnit_Framework_Exceptions.
Because PHP will raise E_DEPRECATED already at compile time, the only way to suppress these errors is in php.ini. My assumption is, that your PHPUnit you run from CLI is using a different php.ini than that your Zend Studio and in that php.ini the error level is not low enough to raise E_DEPRECATED.
If you can provide a reproducable example, we might be able to make more sense of it. In any case, try to update your PEAR installation to the latest version.