MAINT: sparse: refactor csc/csr indices to int64 test
MAINT: sparse: refactor csc/csr indices to int64 test

andyfaff/scipy,ilayn/scipy,andyfaff/scipy,tylerjereddy/scipy,vigna/scipy,nmayorov/scipy,Stefan-Endres/scipy,zerothi/scipy,rgommers/scipy,WarrenWeckesser/scipy,zerothi/scipy,scipy/scipy,e-q/scipy,mdhaber/scipy,endolith/scipy,mdhaber/scipy,anntzer/scipy,grlee77/scipy,nmayorov/scipy,Stefan-Endres/scipy,andyfaff/scipy,e-q/scipy,ilayn/scipy,andyfaff/scipy,endolith/scipy,zerothi/scipy,zerothi/scipy,grlee77/scipy,andyfaff/scipy,andyfaff/scipy,scipy/scipy,Eric89GXL/scipy,e-q/scipy,perimosocordiae/scipy,Stefan-Endres/scipy,endolith/scipy,WarrenWeckesser/scipy,mdhaber/scipy,nmayorov/scipy,endolith/scipy,pizzathief/scipy,nmayorov/scipy,Eric89GXL/scipy,Stefan-Endres/scipy,grlee77/scipy,zerothi/scipy,WarrenWeckesser/scipy,perimosocordiae/scipy,scipy/scipy,perimosocordiae/scipy,tylerjereddy/scipy,ilayn/scipy,pizzathief/scipy,matthew-brett/scipy,matthew-brett/scipy,rgommers/scipy,anntzer/scipy,grlee77/scipy,Eric89GXL/scipy,scipy/scipy,Stefan-Endres/scipy,ilayn/scipy,mdhaber/scipy,scipy/scipy,perimosocordiae/scipy,mdhaber/scipy,Eric89GXL/scipy,WarrenWeckesser/scipy,grlee77/scipy,matthew-brett/scipy,tylerjereddy/scipy,anntzer/scipy,zerothi/scipy,perimosocordiae/scipy,tylerjereddy/scipy,rgommers/scipy,Eric89GXL/scipy,pizzathief/scipy,endolith/scipy,Eric89GXL/scipy,pizzathief/scipy,vigna/scipy,nmayorov/scipy,anntzer/scipy,tylerjereddy/scipy,Stefan-Endres/scipy,WarrenWeckesser/scipy,ilayn/scipy,anntzer/scipy,endolith/scipy,pizzathief/scipy,e-q/scipy,mdhaber/scipy,rgommers/scipy,ilayn/scipy,e-q/scipy,rgommers/scipy,anntzer/scipy,vigna/scipy,vigna/scipy,scipy/scipy,perimosocordiae/scipy,matthew-brett/scipy,vigna/scipy,matthew-brett/scipy,WarrenWeckesser/scipy