TST: reorganize generator tests in csgraph.
TST: reorganize generator tests in csgraph.

As discussed on the mailing list, doing it this way allows seeing with which
parameters a test fails now.

ales-erjavec/scipy,aarchiba/scipy,mhogg/scipy,ortylp/scipy,pschella/scipy,felipebetancur/scipy,vberaudi/scipy,efiring/scipy,chatcannon/scipy,Stefan-Endres/scipy,gertingold/scipy,raoulbq/scipy,vberaudi/scipy,newemailjdm/scipy,WillieMaddox/scipy,lukauskas/scipy,mgaitan/scipy,jseabold/scipy,mdhaber/scipy,ChanderG/scipy,richardotis/scipy,matthewalbani/scipy,teoliphant/scipy,jsilter/scipy,richardotis/scipy,efiring/scipy,rgommers/scipy,WarrenWeckesser/scipy,jseabold/scipy,apbard/scipy,Newman101/scipy,andim/scipy,arokem/scipy,andim/scipy,WarrenWeckesser/scipy,ogrisel/scipy,larsmans/scipy,pschella/scipy,vigna/scipy,sargas/scipy,teoliphant/scipy,mortonjt/scipy,josephcslater/scipy,niknow/scipy,witcxc/scipy,felipebetancur/scipy,vigna/scipy,richardotis/scipy,Newman101/scipy,newemailjdm/scipy,juliantaylor/scipy,Srisai85/scipy,vhaasteren/scipy,gef756/scipy,befelix/scipy,argriffing/scipy,Dapid/scipy,bkendzior/scipy,Dapid/scipy,Kamp9/scipy,nvoron23/scipy,nvoron23/scipy,sauliusl/scipy,teoliphant/scipy,mhogg/scipy,fredrikw/scipy,bkendzior/scipy,sauliusl/scipy,FRidh/scipy,lhilt/scipy,chatcannon/scipy,lukauskas/scipy,rgommers/scipy,ilayn/scipy,pschella/scipy,andyfaff/scipy,vanpact/scipy,minhlongdo/scipy,larsmans/scipy,mortada/scipy,mortada/scipy,Eric89GXL/scipy,e-q/scipy,aarchiba/scipy,aeklant/scipy,haudren/scipy,fernand/scipy,surhudm/scipy,jsilter/scipy,matthew-brett/scipy,zaxliu/scipy,mhogg/scipy,jakevdp/scipy,arokem/scipy,njwilson23/scipy,andyfaff/scipy,Shaswat27/scipy,richardotis/scipy,juliantaylor/scipy,andim/scipy,juliantaylor/scipy,e-q/scipy,zerothi/scipy,vanpact/scipy,anntzer/scipy,anntzer/scipy,dch312/scipy,piyush0609/scipy,aman-iitj/scipy,Kamp9/scipy,maniteja123/scipy,tylerjereddy/scipy,rmcgibbo/scipy,matthewalbani/scipy,hainm/scipy,sriki18/scipy,ilayn/scipy,piyush0609/scipy,mikebenfield/scipy,WarrenWeckesser/scipy,sargas/scipy,arokem/scipy,pnedunuri/scipy,befelix/scipy,Shaswat27/scipy,ndchorley/scipy,matthewalbani/scipy,cpaulik/scipy,zxsted/scipy,mortada/scipy,sriki18/scipy,behzadnouri/scipy,dch312/scipy,Shaswat27/scipy,anntzer/scipy,zxsted/scipy,pnedunuri/scipy,gertingold/scipy,njwilson23/scipy,giorgiop/scipy,ndchorley/scipy,argriffing/scipy,tylerjereddy/scipy,zerothi/scipy,gfyoung/scipy,mortonjt/scipy,jamestwebber/scipy,FRidh/scipy,maciejkula/scipy,grlee77/scipy,endolith/scipy,jsilter/scipy,nmayorov/scipy,nonhermitian/scipy,vberaudi/scipy,kleskjr/scipy,piyush0609/scipy,jjhelmus/scipy,aeklant/scipy,larsmans/scipy,woodscn/scipy,tylerjereddy/scipy,Stefan-Endres/scipy,sargas/scipy,ChanderG/scipy,nmayorov/scipy,ChanderG/scipy,jseabold/scipy,larsmans/scipy,Stefan-Endres/scipy,futurulus/scipy,giorgiop/scipy,befelix/scipy,ndchorley/scipy,Stefan-Endres/scipy,lhilt/scipy,raoulbq/scipy,njwilson23/scipy,niknow/scipy,jonycgn/scipy,kalvdans/scipy,perimosocordiae/scipy,josephcslater/scipy,cpaulik/scipy,jonycgn/scipy,woodscn/scipy,e-q/scipy,vhaasteren/scipy,petebachant/scipy,endolith/scipy,josephcslater/scipy,rgommers/scipy,pyramania/scipy,witcxc/scipy,ales-erjavec/scipy,mikebenfield/scipy,mingwpy/scipy,kalvdans/scipy,piyush0609/scipy,vberaudi/scipy,mgaitan/scipy,nonhermitian/scipy,pizzathief/scipy,Srisai85/scipy,ilayn/scipy,rmcgibbo/scipy,kalvdans/scipy,giorgiop/scipy,gdooper/scipy,WillieMaddox/scipy,argriffing/scipy,fernand/scipy,sriki18/scipy,Srisai85/scipy,fredrikw/scipy,newemailjdm/scipy,maniteja123/scipy,ndchorley/scipy,pyramania/scipy,mortonjt/scipy,Dapid/scipy,dch312/scipy,nmayorov/scipy,mtrbean/scipy,nvoron23/scipy,aeklant/scipy,rgommers/scipy,mtrbean/scipy,felipebetancur/scipy,vhaasteren/scipy,jor-/scipy,WarrenWeckesser/scipy,rgommers/scipy,richardotis/scipy,sauliusl/scipy,minhlongdo/scipy,josephcslater/scipy,kleskjr/scipy,perimosocordiae/scipy,grlee77/scipy,cpaulik/scipy,vanpact/scipy,njwilson23/scipy,FRidh/scipy,mtrbean/scipy,futurulus/scipy,lukauskas/scipy,jor-/scipy,efiring/scipy,sonnyhu/scipy,rmcgibbo/scipy,sauliusl/scipy,behzadnouri/scipy,maniteja123/scipy,chatcannon/scipy,lhilt/scipy,jonycgn/scipy,dominicelse/scipy,Eric89GXL/scipy,hainm/scipy,Shaswat27/scipy,andim/scipy,argriffing/scipy,tylerjereddy/scipy,gdooper/scipy,minhlongdo/scipy,pyramania/scipy,efiring/scipy,apbard/scipy,vigna/scipy,fernand/scipy,perimosocordiae/scipy,aman-iitj/scipy,newemailjdm/scipy,sonnyhu/scipy,teoliphant/scipy,andyfaff/scipy,FRidh/scipy,sonnyhu/scipy,pnedunuri/scipy,anntzer/scipy,mdhaber/scipy,andyfaff/scipy,futurulus/scipy,Dapid/scipy,mdhaber/scipy,sriki18/scipy,Gillu13/scipy,ales-erjavec/scipy,person142/scipy,apbard/scipy,nmayorov/scipy,Stefan-Endres/scipy,raoulbq/scipy,ortylp/scipy,kleskjr/scipy,Srisai85/scipy,Newman101/scipy,matthewalbani/scipy,Newman101/scipy,Dapid/scipy,newemailjdm/scipy,petebachant/scipy,sonnyhu/scipy,pyramania/scipy,fredrikw/scipy,ogrisel/scipy,dominicelse/scipy,pizzathief/scipy,maniteja123/scipy,ilayn/scipy,ogrisel/scipy,jseabold/scipy,ndchorley/scipy,niknow/scipy,mingwpy/scipy,endolith/scipy,Kamp9/scipy,matthew-brett/scipy,gef756/scipy,minhlongdo/scipy,jakevdp/scipy,gfyoung/scipy,fernand/scipy,grlee77/scipy,lhilt/scipy,anielsen001/scipy,jonycgn/scipy,mortonjt/scipy,sauliusl/scipy,larsmans/scipy,ChanderG/scipy,scipy/scipy,jakevdp/scipy,zxsted/scipy,gdooper/scipy,behzadnouri/scipy,pbrod/scipy,richardotis/scipy,pbrod/scipy,aeklant/scipy,scipy/scipy,vberaudi/scipy,mikebenfield/scipy,chatcannon/scipy,aman-iitj/scipy,chatcannon/scipy,pnedunuri/scipy,perimosocordiae/scipy,grlee77/scipy,Eric89GXL/scipy,befelix/scipy,pbrod/scipy,ales-erjavec/scipy,endolith/scipy,jjhelmus/scipy,vigna/scipy,mgaitan/scipy,witcxc/scipy,vanpact/scipy,maniteja123/scipy,mhogg/scipy,vanpact/scipy,ChanderG/scipy,hainm/scipy,person142/scipy,Gillu13/scipy,jor-/scipy,scipy/scipy,matthew-brett/scipy,andyfaff/scipy,ortylp/scipy,futurulus/scipy,piyush0609/scipy,mhogg/scipy,ales-erjavec/scipy,zaxliu/scipy,bkendzior/scipy,trankmichael/scipy,pizzathief/scipy,aarchiba/scipy,haudren/scipy,surhudm/scipy,befelix/scipy,pyramania/scipy,josephcslater/scipy,Newman101/scipy,matthewalbani/scipy,Shaswat27/scipy,behzadnouri/scipy,cpaulik/scipy,mingwpy/scipy,vigna/scipy,zxsted/scipy,Dapid/scipy,gef756/scipy,fernand/scipy,ilayn/scipy,zxsted/scipy,aeklant/scipy,futurulus/scipy,vberaudi/scipy,ndchorley/scipy,WillieMaddox/scipy,endolith/scipy,kalvdans/scipy,grlee77/scipy,anielsen001/scipy,jamestwebber/scipy,Gillu13/scipy,FRidh/scipy,trankmichael/scipy,dch312/scipy,larsmans/scipy,gdooper/scipy,maciejkula/scipy,FRidh/scipy,dominicelse/scipy,anielsen001/scipy,ogrisel/scipy,pbrod/scipy,mikebenfield/scipy,mgaitan/scipy,nvoron23/scipy,sonnyhu/scipy,mingwpy/scipy,mortada/scipy,petebachant/scipy,raoulbq/scipy,jseabold/scipy,pbrod/scipy,pschella/scipy,minhlongdo/scipy,Eric89GXL/scipy,anielsen001/scipy,sauliusl/scipy,kleskjr/scipy,raoulbq/scipy,giorgiop/scipy,zerothi/scipy,maciejkula/scipy,pnedunuri/scipy,scipy/scipy,petebachant/scipy,trankmichael/scipy,rmcgibbo/scipy,ortylp/scipy,ChanderG/scipy,surhudm/scipy,jjhelmus/scipy,mdhaber/scipy,giorgiop/scipy,bkendzior/scipy,argriffing/scipy,endolith/scipy,giorgiop/scipy,hainm/scipy,gdooper/scipy,zaxliu/scipy,rmcgibbo/scipy,gfyoung/scipy,woodscn/scipy,lukauskas/scipy,dominicelse/scipy,anntzer/scipy,gfyoung/scipy,mortonjt/scipy,jjhelmus/scipy,e-q/scipy,vhaasteren/scipy,nmayorov/scipy,vhaasteren/scipy,haudren/scipy,e-q/scipy,surhudm/scipy,dominicelse/scipy,nvoron23/scipy,aman-iitj/scipy,jseabold/scipy,arokem/scipy,jor-/scipy,maciejkula/scipy,anielsen001/scipy,vhaasteren/scipy,cpaulik/scipy,anielsen001/scipy,sriki18/scipy,mtrbean/scipy,aarchiba/scipy,Gillu13/scipy,andim/scipy,lukauskas/scipy,maciejkula/scipy,mhogg/scipy,nonhermitian/scipy,nonhermitian/scipy,kleskjr/scipy,rmcgibbo/scipy,jsilter/scipy,mtrbean/scipy,haudren/scipy,Shaswat27/scipy,scipy/scipy,niknow/scipy,fredrikw/scipy,mortada/scipy,jonycgn/scipy,mingwpy/scipy,fernand/scipy,tylerjereddy/scipy,andyfaff/scipy,gertingold/scipy,WarrenWeckesser/scipy,jsilter/scipy,Srisai85/scipy,arokem/scipy,apbard/scipy,njwilson23/scipy,matthew-brett/scipy,zaxliu/scipy,surhudm/scipy,aman-iitj/scipy,nonhermitian/scipy,gef756/scipy,mdhaber/scipy,lukauskas/scipy,mingwpy/scipy,nvoron23/scipy,Gillu13/scipy,Stefan-Endres/scipy,gertingold/scipy,person142/scipy,WarrenWeckesser/scipy,jamestwebber/scipy,zerothi/scipy,efiring/scipy,felipebetancur/scipy,fredrikw/scipy,woodscn/scipy,hainm/scipy,niknow/scipy,jakevdp/scipy,Kamp9/scipy,mgaitan/scipy,woodscn/scipy,andim/scipy,Srisai85/scipy,trankmichael/scipy,mortada/scipy,jamestwebber/scipy,person142/scipy,gertingold/scipy,haudren/scipy,gef756/scipy,witcxc/scipy,pbrod/scipy,Eric89GXL/scipy,matthew-brett/scipy,sargas/scipy,sonnyhu/scipy,Gillu13/scipy,kleskjr/scipy,jonycgn/scipy,zaxliu/scipy,WillieMaddox/scipy,jjhelmus/scipy,aman-iitj/scipy,trankmichael/scipy,zaxliu/scipy,kalvdans/scipy,surhudm/scipy,lhilt/scipy,aarchiba/scipy,WillieMaddox/scipy,maniteja123/scipy,Kamp9/scipy,trankmichael/scipy,mdhaber/scipy,pizzathief/scipy,perimosocordiae/scipy,mikebenfield/scipy,WillieMaddox/scipy,woodscn/scipy,jakevdp/scipy,petebachant/scipy,jamestwebber/scipy,dch312/scipy,sriki18/scipy,sargas/scipy,juliantaylor/scipy,hainm/scipy,perimosocordiae/scipy,Eric89GXL/scipy,zerothi/scipy,apbard/scipy,behzadnouri/scipy,vanpact/scipy,witcxc/scipy,minhlongdo/scipy,fredrikw/scipy,chatcannon/scipy,raoulbq/scipy,ilayn/scipy,newemailjdm/scipy,jor-/scipy,mortonjt/scipy,zerothi/scipy,juliantaylor/scipy,scipy/scipy,futurulus/scipy,person142/scipy,niknow/scipy,pschella/scipy,pizzathief/scipy,ortylp/scipy,piyush0609/scipy,ogrisel/scipy,behzadnouri/scipy,teoliphant/scipy,petebachant/scipy,felipebetancur/scipy,mgaitan/scipy,ortylp/scipy,zxsted/scipy,Kamp9/scipy,argriffing/scipy,efiring/scipy,felipebetancur/scipy,gfyoung/scipy,pnedunuri/scipy,njwilson23/scipy,haudren/scipy,mtrbean/scipy,anntzer/scipy,gef756/scipy,Newman101/scipy,ales-erjavec/scipy,bkendzior/scipy,cpaulik/scipy