I'm developing a pool software and would like to test it against a fairly modern GPU miner on testnet.
Everything that I found is super outdated and braking most of the time.

I currently don't have an ASIC, this makes real testing impossible.
So I figured out that maybe using a GPU on testnet would work (difficutly arround 4TH/s).

Is there maybe a software only mode for cgminer? Just to check if ti picks up jobs correctly from my pool?