@alessandrolai@maxalmonte14 eh, we need a trait for a default implementation, i'd be tempted to say there is too much responsiblity in the implementation... i.e. it can be avoided with better design. which is my whole argument for not using traits 😛 it's a smell.
for PHPUnit, yeah - it's a pain -- although I still manage to avoid them. I'd rather create supporting classes and/or have a test container and bootstrap in an abstract class.