correct for missing fail() methods which were lost when we removed unittest.TestCase
correct for missing fail() methods which were lost when we removed unittest.TestCase

davidfraser/sqlalchemy,pdufour/sqlalchemy,wfxiang08/sqlalchemy,sqlalchemy/sqlalchemy,alex/sqlalchemy,graingert/sqlalchemy,monetate/sqlalchemy,ThiefMaster/sqlalchemy,brianv0/sqlalchemy,wujuguang/sqlalchemy,bdupharm/sqlalchemy,brianv0/sqlalchemy,pdufour/sqlalchemy,davidfraser/sqlalchemy,robin900/sqlalchemy,Akrog/sqlalchemy,bdupharm/sqlalchemy,halfcrazy/sqlalchemy,WinterNis/sqlalchemy,zzzeek/sqlalchemy,EvaSDK/sqlalchemy,elelianghh/sqlalchemy,wujuguang/sqlalchemy,j5int/sqlalchemy,hsum/sqlalchemy,hsum/sqlalchemy,276361270/sqlalchemy,graingert/sqlalchemy,EvaSDK/sqlalchemy,inspirehep/sqlalchemy,olemis/sqlalchemy,epa/sqlalchemy,Cito/sqlalchemy,itkovian/sqlalchemy,inspirehep/sqlalchemy,monetate/sqlalchemy,halfcrazy/sqlalchemy,itkovian/sqlalchemy,sandan/sqlalchemy,alex/sqlalchemy,bootandy/sqlalchemy,Cito/sqlalchemy,WinterNis/sqlalchemy,robin900/sqlalchemy,sandan/sqlalchemy,276361270/sqlalchemy,olemis/sqlalchemy,dstufft/sqlalchemy,bootandy/sqlalchemy,dstufft/sqlalchemy,epa/sqlalchemy,j5int/sqlalchemy,davidjb/sqlalchemy,Akrog/sqlalchemy,Cito/sqlalchemy,elelianghh/sqlalchemy,ThiefMaster/sqlalchemy,wfxiang08/sqlalchemy,alex/sqlalchemy,davidjb/sqlalchemy