As it is now, test files follow the *[Tt]est.php pattern. This pattern is fixed in the netbeans module for PHPUnit.
It would be nice to be able to specify the globbing pattern in the UI while setting other PHPUnit settings.
The pattern should also be used to generate the filenames of tests generated for PHPUnit. As an extra it would be nice to be able to specify how that name needs to look, for example going from camelcased to all-lowercase-split-by-underscore.