I just downloaded Skyrocket Charger Test from the Play Store. It works with my Skyrocket (Jellybean 4.1.2).
It's a little odd. Nothing appears to happen when I tap it to run it. But if I then plug in a charger I get the notification.
The charging currents reported seem to be consistent with those reported by CurrentWidget v0.4, when CurrentWidget is configured for "/ 10" (divide by ten) in its "Normalize current value" setting.
(This board won't let me post the link to CurrentWidget, sorry!)
This app (and its pre-Play version) has saved me a lot of time and aggravation with poorly made USB cables.