Always fail tests on assertions.
Always fail tests on assertions.

Change-Id: I65aca1fd51d82ea2f7454e1c17ecd9599f025a88

baconz/shaka-player,brightcove/shaka-player,russitto/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,TheModMaker/shaka-player,cmgrecu/shaka-player,vimond/shaka-player,indiereign/shaka-player,ustudio/shaka-player,TobbeEdgeware/shaka-player,Ross-cz/shaka-player,tvoli/shaka-player,Ross-cz/shaka-player,baconz/shaka-player,TobbeEdgeware/shaka-player,TheModMaker/shaka-player,vimond/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,vimond/shaka-player,russitto/shaka-player,TheModMaker/shaka-player,baconz/shaka-player,TobbeEdgeware/shaka-player,brightcove/shaka-player,cmgrecu/shaka-player,shaka-project/shaka-player,Ross-cz/shaka-player,TheModMaker/shaka-player,russitto/shaka-player,tvoli/shaka-player,cmgrecu/shaka-player,shaka-project/shaka-player,indiereign/shaka-player,brightcove/shaka-player,ustudio/shaka-player,indiereign/shaka-player,ustudio/shaka-player,ustudio/shaka-player