PHPUnit not working with Laravel 5

This occurs when you don't have phpunit installed globally.

Run this command to use the local version (installed with composer):

vendor/bin/phpunit

I didn't install PHPUnit globally and didn't define the path. So for anyone who would have same problem :

composer global require phpunit/phpunit
composer global require phpunit/dbunit

Then you add this to you ~/.bash_profile or ~/.profile

export PATH=~/.composer/vendor/bin:$PATH