The first one is true. If you bring them supplies, and you ask them if they are police affiliated, if they are, they must say yes. If I remeber correctly, that would be called entrapment, which is against the law for officers to do.

The second one, in this day and age, I bet officers do test products even though they are cops. It's, part of their job, but again, I'm not 100% sure on this one.

Peace