TST: ticket #1878, test argmin with minimum signed integers.
TST: ticket #1878, test argmin with minimum signed integers.

The bug in ticket #1878 has been fixed in 1.7 but it still needs a test.
Thanks to tlatorre.

joferkington/numpy,Yusa95/numpy,Eric89GXL/numpy,NextThought/pypy-numpy,bertrand-l/numpy,mathdd/numpy,Dapid/numpy,charris/numpy,rhythmsosad/numpy,rudimeier/numpy,behzadnouri/numpy,embray/numpy,kiwifb/numpy,Yusa95/numpy,SiccarPoint/numpy,maniteja123/numpy,mhvk/numpy,jschueller/numpy,GrimDerp/numpy,pelson/numpy,Srisai85/numpy,BabeNovelty/numpy,jorisvandenbossche/numpy,larsmans/numpy,jonathanunderwood/numpy,Eric89GXL/numpy,musically-ut/numpy,has2k1/numpy,bertrand-l/numpy,MichaelAquilina/numpy,madphysicist/numpy,argriffing/numpy,embray/numpy,mindw/numpy,jankoslavic/numpy,pbrod/numpy,musically-ut/numpy,anntzer/numpy,dwf/numpy,ChristopherHogan/numpy,pelson/numpy,pelson/numpy,WillieMaddox/numpy,BMJHayward/numpy,ChristopherHogan/numpy,jorisvandenbossche/numpy,rherault-insa/numpy,mathdd/numpy,Dapid/numpy,behzadnouri/numpy,MSeifert04/numpy,jankoslavic/numpy,moreati/numpy,jorisvandenbossche/numpy,ssanderson/numpy,jonathanunderwood/numpy,cowlicks/numpy,madphysicist/numpy,anntzer/numpy,simongibbons/numpy,shoyer/numpy,chiffa/numpy,SunghanKim/numpy,ChristopherHogan/numpy,AustereCuriosity/numpy,Yusa95/numpy,Yusa95/numpy,MichaelAquilina/numpy,ewmoore/numpy,nguyentu1602/numpy,BMJHayward/numpy,pdebuyl/numpy,jankoslavic/numpy,andsor/numpy,mingwpy/numpy,drasmuss/numpy,trankmichael/numpy,ChanderG/numpy,pyparallel/numpy,mortada/numpy,sinhrks/numpy,embray/numpy,jankoslavic/numpy,empeeu/numpy,MaPePeR/numpy,MaPePeR/numpy,seberg/numpy,mattip/numpy,shoyer/numpy,KaelChen/numpy,rhythmsosad/numpy,yiakwy/numpy,nbeaver/numpy,SunghanKim/numpy,dwillmer/numpy,naritta/numpy,joferkington/numpy,shoyer/numpy,abalkin/numpy,immerrr/numpy,ogrisel/numpy,jschueller/numpy,MaPePeR/numpy,jonathanunderwood/numpy,skwbc/numpy,kirillzhuravlev/numpy,githubmlai/numpy,trankmichael/numpy,cjermain/numpy,solarjoe/numpy,bringingheavendown/numpy,immerrr/numpy,jakirkham/numpy,chatcannon/numpy,Anwesh43/numpy,Eric89GXL/numpy,sigma-random/numpy,astrofrog/numpy,dwillmer/numpy,hainm/numpy,MaPePeR/numpy,pdebuyl/numpy,mattip/numpy,maniteja123/numpy,CMartelLML/numpy,grlee77/numpy,jschueller/numpy,skymanaditya1/numpy,dato-code/numpy,empeeu/numpy,mingwpy/numpy,grlee77/numpy,GaZ3ll3/numpy,mattip/numpy,mhvk/numpy,ContinuumIO/numpy,Linkid/numpy,drasmuss/numpy,Anwesh43/numpy,nbeaver/numpy,WarrenWeckesser/numpy,felipebetancur/numpy,brandon-rhodes/numpy,SunghanKim/numpy,leifdenby/numpy,brandon-rhodes/numpy,madphysicist/numpy,ahaldane/numpy,joferkington/numpy,GaZ3ll3/numpy,grlee77/numpy,dch312/numpy,SiccarPoint/numpy,cjermain/numpy,empeeu/numpy,larsmans/numpy,NextThought/pypy-numpy,WarrenWeckesser/numpy,skymanaditya1/numpy,yiakwy/numpy,mattip/numpy,ahaldane/numpy,sonnyhu/numpy,BMJHayward/numpy,charris/numpy,ewmoore/numpy,pelson/numpy,astrofrog/numpy,ogrisel/numpy,rudimeier/numpy,gfyoung/numpy,SunghanKim/numpy,GaZ3ll3/numpy,ekalosak/numpy,mortada/numpy,dwf/numpy,ekalosak/numpy,pizzathief/numpy,abalkin/numpy,felipebetancur/numpy,pbrod/numpy,brandon-rhodes/numpy,ViralLeadership/numpy,hainm/numpy,bringingheavendown/numpy,endolith/numpy,Srisai85/numpy,githubmlai/numpy,has2k1/numpy,ddasilva/numpy,andsor/numpy,numpy/numpy,joferkington/numpy,dch312/numpy,KaelChen/numpy,dimasad/numpy,solarjoe/numpy,Dapid/numpy,Anwesh43/numpy,mortada/numpy,ContinuumIO/numpy,pizzathief/numpy,kirillzhuravlev/numpy,rherault-insa/numpy,argriffing/numpy,WillieMaddox/numpy,mingwpy/numpy,ssanderson/numpy,MSeifert04/numpy,endolith/numpy,dimasad/numpy,b-carter/numpy,dwillmer/numpy,ddasilva/numpy,numpy/numpy,immerrr/numpy,ekalosak/numpy,mwiebe/numpy,dch312/numpy,numpy/numpy,rajathkumarmp/numpy,astrofrog/numpy,SiccarPoint/numpy,dch312/numpy,utke1/numpy,utke1/numpy,groutr/numpy,grlee77/numpy,CMartelLML/numpy,bmorris3/numpy,ViralLeadership/numpy,mortada/numpy,tacaswell/numpy,tdsmith/numpy,pyparallel/numpy,b-carter/numpy,pizzathief/numpy,chatcannon/numpy,sonnyhu/numpy,gmcastil/numpy,gmcastil/numpy,ahaldane/numpy,jakirkham/numpy,grlee77/numpy,naritta/numpy,skymanaditya1/numpy,ajdawson/numpy,AustereCuriosity/numpy,bmorris3/numpy,rgommers/numpy,madphysicist/numpy,ViralLeadership/numpy,njase/numpy,MSeifert04/numpy,argriffing/numpy,BabeNovelty/numpy,leifdenby/numpy,charris/numpy,trankmichael/numpy,mathdd/numpy,jakirkham/numpy,dwillmer/numpy,ChanderG/numpy,mingwpy/numpy,utke1/numpy,pizzathief/numpy,madphysicist/numpy,seberg/numpy,ekalosak/numpy,gmcastil/numpy,chatcannon/numpy,pdebuyl/numpy,cowlicks/numpy,stuarteberg/numpy,cowlicks/numpy,stuarteberg/numpy,groutr/numpy,AustereCuriosity/numpy,sonnyhu/numpy,GrimDerp/numpy,immerrr/numpy,SiccarPoint/numpy,NextThought/pypy-numpy,rgommers/numpy,chiffa/numpy,jschueller/numpy,behzadnouri/numpy,pbrod/numpy,leifdenby/numpy,ContinuumIO/numpy,abalkin/numpy,tynn/numpy,mindw/numpy,nbeaver/numpy,rmcgibbo/numpy,trankmichael/numpy,mhvk/numpy,kirillzhuravlev/numpy,rudimeier/numpy,ewmoore/numpy,WarrenWeckesser/numpy,Eric89GXL/numpy,WarrenWeckesser/numpy,MichaelAquilina/numpy,tdsmith/numpy,kiwifb/numpy,tynn/numpy,mhvk/numpy,anntzer/numpy,stuarteberg/numpy,moreati/numpy,endolith/numpy,simongibbons/numpy,b-carter/numpy,yiakwy/numpy,BabeNovelty/numpy,bertrand-l/numpy,rgommers/numpy,charris/numpy,BMJHayward/numpy,moreati/numpy,tdsmith/numpy,MichaelAquilina/numpy,mindw/numpy,ahaldane/numpy,rmcgibbo/numpy,rmcgibbo/numpy,Anwesh43/numpy,Srisai85/numpy,sinhrks/numpy,hainm/numpy,cjermain/numpy,kiwifb/numpy,simongibbons/numpy,ajdawson/numpy,skymanaditya1/numpy,ewmoore/numpy,ewmoore/numpy,felipebetancur/numpy,rhythmsosad/numpy,rajathkumarmp/numpy,bringingheavendown/numpy,numpy/numpy,nguyentu1602/numpy,ogrisel/numpy,WillieMaddox/numpy,dimasad/numpy,CMartelLML/numpy,has2k1/numpy,maniteja123/numpy,NextThought/pypy-numpy,drasmuss/numpy,rherault-insa/numpy,KaelChen/numpy,rajathkumarmp/numpy,tacaswell/numpy,endolith/numpy,embray/numpy,shoyer/numpy,ChanderG/numpy,pbrod/numpy,ESSS/numpy,pbrod/numpy,KaelChen/numpy,empeeu/numpy,ogrisel/numpy,GrimDerp/numpy,chiffa/numpy,sigma-random/numpy,GaZ3ll3/numpy,dato-code/numpy,pizzathief/numpy,mhvk/numpy,jorisvandenbossche/numpy,groutr/numpy,skwbc/numpy,rhythmsosad/numpy,brandon-rhodes/numpy,CMartelLML/numpy,simongibbons/numpy,jakirkham/numpy,mindw/numpy,cowlicks/numpy,Linkid/numpy,larsmans/numpy,kirillzhuravlev/numpy,rudimeier/numpy,ESSS/numpy,ChanderG/numpy,njase/numpy,mwiebe/numpy,ChristopherHogan/numpy,Srisai85/numpy,MSeifert04/numpy,sinhrks/numpy,skwbc/numpy,njase/numpy,dwf/numpy,seberg/numpy,sinhrks/numpy,yiakwy/numpy,sigma-random/numpy,jorisvandenbossche/numpy,dato-code/numpy,ajdawson/numpy,githubmlai/numpy,anntzer/numpy,ahaldane/numpy,pdebuyl/numpy,BabeNovelty/numpy,hainm/numpy,ogrisel/numpy,cjermain/numpy,rajathkumarmp/numpy,musically-ut/numpy,musically-ut/numpy,gfyoung/numpy,andsor/numpy,ajdawson/numpy,pyparallel/numpy,ESSS/numpy,MSeifert04/numpy,bmorris3/numpy,pelson/numpy,solarjoe/numpy,rgommers/numpy,mathdd/numpy,Linkid/numpy,tdsmith/numpy,felipebetancur/numpy,tacaswell/numpy,shoyer/numpy,astrofrog/numpy,simongibbons/numpy,dimasad/numpy,bmorris3/numpy,tynn/numpy,rmcgibbo/numpy,stuarteberg/numpy,ddasilva/numpy,GrimDerp/numpy,sonnyhu/numpy,dwf/numpy,WarrenWeckesser/numpy,jakirkham/numpy,sigma-random/numpy,githubmlai/numpy,naritta/numpy,Linkid/numpy,astrofrog/numpy,naritta/numpy,nguyentu1602/numpy,has2k1/numpy,mwiebe/numpy,gfyoung/numpy,andsor/numpy,larsmans/numpy,nguyentu1602/numpy,dato-code/numpy,embray/numpy,ssanderson/numpy,dwf/numpy,seberg/numpy