refactor ActiveSupport::TestCase.test_order method with memoization
refactor ActiveSupport::TestCase.test_order method with memoization

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