Add tests to make sure protocol values above 0 don't round to 0

[qdot]

Since commands like VibrateCmd take a float from 0-1, we can get very small numbers. However, sex toys have 100 steps of settings if we're lucky, with that number going as low as 2-4 sometimes. We should make sure that if we are passed a number > 0, we make sure the device is doing something other that stopping.