add tests for exceptions
add tests for exceptions

dnuffer/Lasagne,Richi91/nntools,cancan101/Lasagne,takacsg84/Lasagne,mheilman/Lasagne,kracwarlock/Lasagne,DataFighter/Lasagne-tutorial,MihailoIsakov/fishfish,DeanChan/Lasagne,gabortakacs/Lasagne,diogo149/Lasagne,ErnstHowie/Lasagne,ebattenberg/Lasagne,rlkelly/Lasagne