Added a test for the new get_return_code method.
Added a test for the new get_return_code method.

jor-/scipy,gertingold/scipy,ilayn/scipy,lhilt/scipy,aeklant/scipy,ilayn/scipy,Stefan-Endres/scipy,scipy/scipy,WarrenWeckesser/scipy,nmayorov/scipy,tylerjereddy/scipy,lhilt/scipy,e-q/scipy,jor-/scipy,matthew-brett/scipy,anntzer/scipy,vigna/scipy,jor-/scipy,zerothi/scipy,grlee77/scipy,matthew-brett/scipy,zerothi/scipy,vigna/scipy,ilayn/scipy,nmayorov/scipy,vigna/scipy,aeklant/scipy,ilayn/scipy,andyfaff/scipy,aarchiba/scipy,zerothi/scipy,WarrenWeckesser/scipy,mdhaber/scipy,arokem/scipy,grlee77/scipy,Stefan-Endres/scipy,mdhaber/scipy,aarchiba/scipy,matthew-brett/scipy,zerothi/scipy,Eric89GXL/scipy,person142/scipy,endolith/scipy,lhilt/scipy,arokem/scipy,nmayorov/scipy,andyfaff/scipy,arokem/scipy,tylerjereddy/scipy,gertingold/scipy,mdhaber/scipy,jor-/scipy,gertingold/scipy,person142/scipy,rgommers/scipy,anntzer/scipy,aarchiba/scipy,andyfaff/scipy,mdhaber/scipy,lhilt/scipy,perimosocordiae/scipy,endolith/scipy,pizzathief/scipy,Eric89GXL/scipy,matthew-brett/scipy,vigna/scipy,WarrenWeckesser/scipy,anntzer/scipy,arokem/scipy,zerothi/scipy,WarrenWeckesser/scipy,andyfaff/scipy,aeklant/scipy,scipy/scipy,mdhaber/scipy,ilayn/scipy,perimosocordiae/scipy,jamestwebber/scipy,anntzer/scipy,jor-/scipy,tylerjereddy/scipy,scipy/scipy,pizzathief/scipy,Eric89GXL/scipy,gfyoung/scipy,jamestwebber/scipy,WarrenWeckesser/scipy,andyfaff/scipy,perimosocordiae/scipy,Eric89GXL/scipy,person142/scipy,rgommers/scipy,Eric89GXL/scipy,arokem/scipy,Stefan-Endres/scipy,person142/scipy,aeklant/scipy,nmayorov/scipy,e-q/scipy,lhilt/scipy,jamestwebber/scipy,grlee77/scipy,mdhaber/scipy,rgommers/scipy,nmayorov/scipy,perimosocordiae/scipy,gfyoung/scipy,e-q/scipy,e-q/scipy,rgommers/scipy,jamestwebber/scipy,endolith/scipy,tylerjereddy/scipy,e-q/scipy,pizzathief/scipy,grlee77/scipy,gertingold/scipy,scipy/scipy,pizzathief/scipy,pizzathief/scipy,perimosocordiae/scipy,anntzer/scipy,andyfaff/scipy,Stefan-Endres/scipy,person142/scipy,aeklant/scipy,endolith/scipy,Stefan-Endres/scipy,gfyoung/scipy,anntzer/scipy,zerothi/scipy,perimosocordiae/scipy,Stefan-Endres/scipy,aarchiba/scipy,endolith/scipy,tylerjereddy/scipy,gertingold/scipy,rgommers/scipy,gfyoung/scipy,Eric89GXL/scipy,endolith/scipy,ilayn/scipy,scipy/scipy,scipy/scipy,aarchiba/scipy,WarrenWeckesser/scipy,grlee77/scipy,jamestwebber/scipy,gfyoung/scipy,vigna/scipy,matthew-brett/scipy