Add failure messages back into unit test
Add failure messages back into unit test

This is addressing a comment by user bahusoid on my previous PR

fredericDelaporte/nhibernate-core,hazzik/nhibernate-core,RogerKratz/nhibernate-core,hazzik/nhibernate-core,gliljas/nhibernate-core,hazzik/nhibernate-core,fredericDelaporte/nhibernate-core,nhibernate/nhibernate-core,RogerKratz/nhibernate-core,RogerKratz/nhibernate-core,hazzik/nhibernate-core,nhibernate/nhibernate-core,fredericDelaporte/nhibernate-core,RogerKratz/nhibernate-core,ngbrown/nhibernate-core,ngbrown/nhibernate-core,gliljas/nhibernate-core,fredericDelaporte/nhibernate-core,gliljas/nhibernate-core,nhibernate/nhibernate-core,gliljas/nhibernate-core,nhibernate/nhibernate-core,ngbrown/nhibernate-core