Add test cases for model and migration generators which use `change` method.
Add test cases for model and migration generators which use `change` method.

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