Add a test for the special multi-command case.
Add a test for the special multi-command case.

zhiyuanshi/pgcli,w4ngyi/pgcli,joewalnes/pgcli,j-bennet/pgcli,dbcli/pgcli,thedrow/pgcli,suzukaze/pgcli,nosun/pgcli,lk1ngaa7/pgcli,dbcli/vcli,n-someya/pgcli,bitemyapp/pgcli,lk1ngaa7/pgcli,dbcli/pgcli,thedrow/pgcli,yx91490/pgcli,johshoff/pgcli,suzukaze/pgcli,johshoff/pgcli,yx91490/pgcli,bitmonk/pgcli,janusnic/pgcli,d33tah/pgcli,bitemyapp/pgcli,koljonen/pgcli,bitmonk/pgcli,nosun/pgcli,joewalnes/pgcli,MattOates/pgcli,koljonen/pgcli,d33tah/pgcli,darikg/pgcli,MattOates/pgcli,n-someya/pgcli,janusnic/pgcli,TamasNo1/pgcli,TamasNo1/pgcli,darikg/pgcli,w4ngyi/pgcli,dbcli/vcli,zhiyuanshi/pgcli,j-bennet/pgcli