Add a test for http://www.sqlalchemy.org/trac/ticket/2683
Add a test for http://www.sqlalchemy.org/trac/ticket/2683

This test currently passes in Python 2 but fails in Python 3.

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