C:\[...]\xampp\htdocs\foo\protected\tests>phpunit unit\mainTest.php
Warning: require_once(PHP/CodeCoverage/Filter.php): failed to open stream: No such file or directory in C:\[...]\xampp\php\phpunit on line 38
Call Stack:
0.0145 125568 1. {main}() C:\[...]\xampp\php\phpunit:0
Fatal error: require_once(): Failed opening required 'PHP/CodeCoverage/Filter.php' (include_path='.;C:\[...]\xampp\php\PEAR') in C:\[...]\xampp\php\phpunit on line 38
Call Stack:
0.0145 125568 1. {main}() C:\[...]\xampp\php\phpunit:0