TST: add tests for indexing Series with duplicate periods, close #1154
TST: add tests for indexing Series with duplicate periods, close #1154

MJuddBooth/pandas,cython-testbed/pandas,gfyoung/pandas,MJuddBooth/pandas,winklerand/pandas,dsm054/pandas,harisbal/pandas,zfrenchee/pandas,GuessWhoSamFoo/pandas,jmmease/pandas,nmartensen/pandas,winklerand/pandas,Winand/pandas,pandas-dev/pandas,TomAugspurger/pandas,nmartensen/pandas,dsm054/pandas,louispotok/pandas,DGrady/pandas,datapythonista/pandas,cython-testbed/pandas,amolkahat/pandas,harisbal/pandas,pandas-dev/pandas,jmmease/pandas,datapythonista/pandas,winklerand/pandas,rs2/pandas,kdebrab/pandas,gfyoung/pandas,jreback/pandas,GuessWhoSamFoo/pandas,linebp/pandas,DGrady/pandas,jreback/pandas,toobaz/pandas,zfrenchee/pandas,TomAugspurger/pandas,cbertinato/pandas,jmmease/pandas,TomAugspurger/pandas,kdebrab/pandas,linebp/pandas,kdebrab/pandas,amolkahat/pandas,louispotok/pandas,nmartensen/pandas,pratapvardhan/pandas,pandas-dev/pandas,toobaz/pandas,zfrenchee/pandas,DGrady/pandas,zfrenchee/pandas,cbertinato/pandas,winklerand/pandas,harisbal/pandas,jorisvandenbossche/pandas,Winand/pandas,Winand/pandas,jmmease/pandas,datapythonista/pandas,pandas-dev/pandas,datapythonista/pandas,rs2/pandas,linebp/pandas,DGrady/pandas,amolkahat/pandas,dsm054/pandas,pratapvardhan/pandas,nmartensen/pandas,jmmease/pandas,jreback/pandas,linebp/pandas,GuessWhoSamFoo/pandas,GuessWhoSamFoo/pandas,linebp/pandas,louispotok/pandas,louispotok/pandas,kdebrab/pandas,harisbal/pandas,MJuddBooth/pandas,gfyoung/pandas,zfrenchee/pandas,dsm054/pandas,jorisvandenbossche/pandas,rs2/pandas,kdebrab/pandas,TomAugspurger/pandas,amolkahat/pandas,louispotok/pandas,cython-testbed/pandas,DGrady/pandas,cython-testbed/pandas,jorisvandenbossche/pandas,nmartensen/pandas,toobaz/pandas,jreback/pandas,nmartensen/pandas,Winand/pandas,linebp/pandas,GuessWhoSamFoo/pandas,gfyoung/pandas,Winand/pandas,rs2/pandas,jreback/pandas,jmmease/pandas,pratapvardhan/pandas,pratapvardhan/pandas,cbertinato/pandas,cbertinato/pandas,dsm054/pandas,DGrady/pandas,MJuddBooth/pandas,toobaz/pandas,winklerand/pandas,toobaz/pandas,pratapvardhan/pandas,cython-testbed/pandas,winklerand/pandas,cbertinato/pandas,jorisvandenbossche/pandas,gfyoung/pandas,harisbal/pandas,Winand/pandas,amolkahat/pandas,MJuddBooth/pandas