According to @WouterJ: > You shouldn't require PHPunit as a dev dependency (and you've proofed with this issue again why you shouldn't). > > Download the `phpunit.phar` and put it in a directory that's in your `$PATH`. Source: https://github.com/symfony/symfony/issues/18903#issuecomment-222294957 But the documentation doesn't recommend to install PHPUnit without Composer: http://symfony.com/doc/current/book/testing.html Should the documentation mention that using `phpunit.phar` is the recommended way to use PHPUnit?