I recently came across the below phpunit error after upgrading to osx10.8 mountain lion.
PHP Warning: require_once(File/Iterator/Autoload.php): failed to open stream: No such file or directory in /usr/local/share/pear/PHPUnit/Autoload.php on line 45 PHP Fatal error: require_once(): Failed opening required 'File/Iterator/Autoload.php' (include_path='.:/usr/lib/php/pear') in /usr/local/share/pear/PHPUnit/Autoload.php on line 45
Basically the problem exists because my php.ini include_path was pointed to the wrong place. See below.
To fix it, you need to check the file has been installed, somewhere…
pear list-files phpunit/phpunit
Check for location and replace it with the correct one in the php.ini file (which might be in /private/etc/php.ini symlinked to /etc/php.ini) check by typing php –ini. The steps below are to install from scratch.
curl http://pear.php.net/go-pear.phar > go-pear.php
sudo sudo php -q go-pear.php
sudo cp /etc/php.ini.default /etc/php.ini
include_path = ".:/usr/local/share/pear"