add test coverage for `bin/setup`.
add test coverage for `bin/setup`.

Make sure this script keeps working and has consistent output.

gavingmiller/rails,repinel/rails,tgxworld/rails,arjes/rails,rails/rails,gcourtemanche/rails,tgxworld/rails,kaspth/rails,brchristian/rails,Vasfed/rails,felipecvo/rails,assain/rails,illacceptanything/illacceptanything,jeremy/rails,riseshia/railsguides.kr,rbhitchcock/rails,bradleypriest/rails,kmcphillips/rails,fabianoleittes/rails,joonyou/rails,gauravtiwari/rails,deraru/rails,88rabbit/newRails,notapatch/rails,ttanimichi/rails,BlakeWilliams/rails,Sen-Zhang/rails,georgeclaghorn/rails,yhirano55/rails,mohitnatoo/rails,tgxworld/rails,Edouard-chin/rails,jeremy/rails,elfassy/rails,printercu/rails,bogdanvlviv/rails,lcreid/rails,prathamesh-sonpatki/rails,vipulnsward/rails,yahonda/rails,Stellenticket/rails,Edouard-chin/rails,shioyama/rails,alecspopa/rails,kaspth/rails,esparta/rails,kamipo/rails,shioyama/rails,mtsmfm/railstest,lucasmazza/rails,MSP-Greg/rails,prathamesh-sonpatki/rails,georgeclaghorn/rails,sealocal/rails,vassilevsky/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,Erol/rails,illacceptanything/illacceptanything,MichaelSp/rails,kddeisz/rails,mtsmfm/railstest,yahonda/rails,printercu/rails,arjes/rails,mohitnatoo/rails,matrinox/rails,jeremy/rails,Vasfed/rails,yasslab/railsguides.jp,tijwelch/rails,alecspopa/rails,Envek/rails,maicher/rails,pvalena/rails,kmcphillips/rails,mtsmfm/railstest,kmayer/rails,baerjam/rails,felipecvo/rails,rails/rails,betesh/rails,mathieujobin/reduced-rails-for-travis,amoody2108/TechForJustice,kachick/rails,sealocal/rails,brchristian/rails,sealocal/rails,gavingmiller/rails,ngpestelos/rails,marklocklear/rails,bogdanvlviv/rails,utilum/rails,koic/rails,aditya-kapoor/rails,travisofthenorth/rails,kachick/rails,pvalena/rails,pschambacher/rails,elfassy/rails,rossta/rails,fabianoleittes/rails,rafaelfranca/omg-rails,MSP-Greg/rails,baerjam/rails,riseshia/railsguides.kr,palkan/rails,starknx/rails,ttanimichi/rails,gfvcastro/rails,rafaelfranca/omg-rails,iainbeeston/rails,bradleypriest/rails,stefanmb/rails,aditya-kapoor/rails,yasslab/railsguides.jp,schuetzm/rails,rossta/rails,Envek/rails,yhirano55/rails,starknx/rails,kirs/rails-1,shioyama/rails,coreyward/rails,illacceptanything/illacceptanything,yahonda/rails,Erol/rails,rossta/rails,bolek/rails,coreyward/rails,yalab/rails,gcourtemanche/rails,mijoharas/rails,baerjam/rails,yasslab/railsguides.jp,richseviora/rails,kenta-s/rails,utilum/rails,Stellenticket/rails,xlymian/rails,deraru/rails,fabianoleittes/rails,iainbeeston/rails,vipulnsward/rails,yalab/rails,Spin42/rails,palkan/rails,rbhitchcock/rails,hanystudy/rails,assain/rails,jeremy/rails,hanystudy/rails,ngpestelos/rails,notapatch/rails,utilum/rails,MichaelSp/rails,joonyou/rails,starknx/rails,eileencodes/rails,lucasmazza/rails,richseviora/rails,lcreid/rails,tijwelch/rails,aditya-kapoor/rails,xlymian/rails,shioyama/rails,illacceptanything/illacceptanything,MSP-Greg/rails,rails/rails,88rabbit/newRails,odedniv/rails,eileencodes/rails,tijwelch/rails,pvalena/rails,samphilipd/rails,tjschuck/rails,MSP-Greg/rails,notapatch/rails,kmcphillips/rails,assain/rails,kenta-s/rails,travisofthenorth/rails,xlymian/rails,gfvcastro/rails,iainbeeston/rails,voray/rails,aditya-kapoor/rails,georgeclaghorn/rails,gcourtemanche/rails,prathamesh-sonpatki/rails,repinel/rails,ledestin/rails,yalab/rails,mechanicles/rails,gauravtiwari/rails,Erol/rails,Erol/rails,travisofthenorth/rails,riseshia/railsguides.kr,elfassy/rails,tjschuck/rails,repinel/rails,illacceptanything/illacceptanything,ttanimichi/rails,deraru/rails,illacceptanything/illacceptanything,travisofthenorth/rails,eileencodes/rails,betesh/rails,yahonda/rails,felipecvo/rails,Sen-Zhang/rails,Vasfed/rails,gauravtiwari/rails,yawboakye/rails,mechanicles/rails,bogdanvlviv/rails,iainbeeston/rails,EmmaB/rails-1,deraru/rails,lcreid/rails,baerjam/rails,mohitnatoo/rails,maicher/rails,kamipo/rails,kirs/rails-1,esparta/rails,mathieujobin/reduced-rails-for-travis,BlakeWilliams/rails,esparta/rails,bogdanvlviv/rails,EmmaB/rails-1,schuetzm/rails,untidy-hair/rails,Stellenticket/rails,arunagw/rails,arjes/rails,samphilipd/rails,kddeisz/rails,odedniv/rails,stefanmb/rails,rbhitchcock/rails,matrinox/rails,mtsmfm/rails,untidy-hair/rails,tjschuck/rails,yawboakye/rails,mohitnatoo/rails,yawboakye/rails,arunagw/rails,tjschuck/rails,eileencodes/rails,flanger001/rails,esparta/rails,odedniv/rails,kachick/rails,alecspopa/rails,joonyou/rails,fabianoleittes/rails,88rabbit/newRails,vassilevsky/rails,amoody2108/TechForJustice,kmayer/rails,kamipo/rails,schuetzm/rails,mtsmfm/rails,riseshia/railsguides.kr,richseviora/rails,illacceptanything/illacceptanything,koic/rails,flanger001/rails,vipulnsward/rails,utilum/rails,Edouard-chin/rails,notapatch/rails,stefanmb/rails,untidy-hair/rails,kmcphillips/rails,maicher/rails,joonyou/rails,flanger001/rails,kddeisz/rails,mechanicles/rails,arunagw/rails,ngpestelos/rails,BlakeWilliams/rails,mtsmfm/rails,bolek/rails,vipulnsward/rails,BlakeWilliams/rails,palkan/rails,amoody2108/TechForJustice,Spin42/rails,mijoharas/rails,betesh/rails,ledestin/rails,pschambacher/rails,Spin42/rails,assain/rails,yawboakye/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,gfvcastro/rails,Envek/rails,kaspth/rails,coreyward/rails,Vasfed/rails,mechanicles/rails,brchristian/rails,arunagw/rails,ledestin/rails,samphilipd/rails,MichaelSp/rails,pschambacher/rails,palkan/rails,sergey-alekseev/rails,Edouard-chin/rails,yhirano55/rails,gfvcastro/rails,Stellenticket/rails,schuetzm/rails,yasslab/railsguides.jp,Envek/rails,illacceptanything/illacceptanything,voray/rails,rafaelfranca/omg-rails,yhirano55/rails,bradleypriest/rails,matrinox/rails,mathieujobin/reduced-rails-for-travis,yalab/rails,printercu/rails,lcreid/rails,voray/rails,pvalena/rails,georgeclaghorn/rails,kenta-s/rails,rails/rails,marklocklear/rails,prathamesh-sonpatki/rails,sergey-alekseev/rails,gavingmiller/rails,EmmaB/rails-1,repinel/rails,betesh/rails,koic/rails,kirs/rails-1,vassilevsky/rails,kmayer/rails,marklocklear/rails,illacceptanything/illacceptanything,tgxworld/rails,Sen-Zhang/rails,hanystudy/rails,untidy-hair/rails,sergey-alekseev/rails,illacceptanything/illacceptanything,bolek/rails,flanger001/rails,illacceptanything/illacceptanything,kddeisz/rails,mijoharas/rails,lucasmazza/rails,printercu/rails