The reason I'm asking this is because php-cs-fixer spits out an error for all my test classes. The reason is that the test classes doesn't have a namespace, which they don't.
I've tried adding a namespace myself, but that doesn't seem to work.
The error I get is
class must be in a namespace of at least one level
It's explained here (rule 3): http://www.php-fig.org/psr/psr-1/#3
I've tried updating my composer file to have a namespace as the regular App has, but then the TestCase class is not found.