I was working on testing my actions and used the shouldRun method and it wasn't working.

Turns out I need to add ->once() in order for a test to actually run.

I'm not sure if this is a bug, a feature request or a documentation thing, please advise and I'll update the appropriate thing in a PR.

At a minimum I believe the docs should be updated to show a working example (as that's what I copied). Alternatively, we could update shouldRun etc to call once? In PHPUnit land you can use expects to call once automatically.