To a certain degree.
You can test your dps on say a world boss solo kill. The one in Dromund Kaas works fine(dont have to use def cds or heals).
hp of boss divided by seconds it takes.
But ofcourse it's hard to tell precisely. RNG, missing buffs etc. But just as an indication.
Gotten around 1350 dps selfbuffed as jugg veng build twice now.