Add unit test for featurize.py
Add unit test for featurize.py

mltsp/mltsp,mltsp/mltsp,mltsp/mltsp,acrellin/mltsp,acrellin/mltsp,bnaul/mltsp,acrellin/mltsp,acrellin/mltsp,bnaul/mltsp,acrellin/mltsp,mltsp/mltsp,bnaul/mltsp,acrellin/mltsp,bnaul/mltsp,mltsp/mltsp,bnaul/mltsp,bnaul/mltsp,mltsp/mltsp