unit tests back to 100

Change-Id: I7af4a24d8b36a6d8ac10275b6054ff5c16424e8c
doc change

Change-Id: Iab7802bf073e08381511b852cd55504da0e6361c
pep8

Change-Id: Id8875acbb78415d459d72ac5f0acb7594368cdc2