By looking to the original post of Evan I think that there are two testnet pools:
Mpos + Stratum: http://ec2-54-91-161-78.compute-1.amazonaws.com/index.php
-- connection string: sgminer.exe -o stratum+tcp://54.91.161.78:3333 -u eduffield.1 -p x
Nomp : http://54.183.73.24/