The labeling really doesn't have anything to do with testing. Labeling your product ala CPSIA doesn't mean that your product is tested. It doesn't mean really a darned thing other than you have follow the sheeple rules.
There us no rule that we must show a label stating that our product complies, in fact, no one but CPSA can require proof that we comply.
I can't look at a zipper, a button or anything and state that it is non compliant. And I've been sewing/ designing/working in the industry for 58 years. Yes, somethings I would be suspect of, but there isn't a "smell" test.
My feeling is, don't worry about your neighbor, just worry about yourself. I'm not going to jump thru evey government hoop, not with this administration, I'll do what I need to do to insure that what I'm selling is not "hazardous", but I'm not going to lose sleep over someone else selling in another shop.