minor #16859 [TwigBridge] add missing unit tests (AppVariable) (FlorianLB)
minor #16859 [TwigBridge] add missing unit tests (AppVariable) (FlorianLB)

This PR was submitted for the 2.8 branch but it was merged into the 2.7 branch instead (closes #16859).

Discussion
----------

[TwigBridge] add missing unit tests (AppVariable)

Just add few missing unit tests.

---

| Q             | A
| ------------- | ---
| Bug fix?      | [no]
| New feature?  | [no]
| BC breaks?    | [no]
| Deprecations? | [no]
| Tests pass?   | [yes]
| Fixed tickets | [n/a]
| License       | MIT
| Doc PR        | [n/a]

Commits
-------

156cdb5 [TwigBridge] add missing unit tests (AppVariable)

SpacePossum/symfony,damienalexandre/symfony,jderusse/symfony,romainneutron/symfony,GuilhemN/symfony,curry684/symfony,dzuelke/symfony,Koc/symfony,Pierstoval/symfony,arjenm/symfony,gencer/symfony,mweimerskirch/symfony,apfelbox/symfony,realityking/symfony,gencer/symfony,patrick-mcdougle/symfony,maidmaid/symfony,patrick-mcdougle/symfony,georaldc/symfony,frankdejonge/symfony,jakubsacha/symfony,localheinz/symfony,neemzy/symfony,ewgRa/symfony,mweimerskirch/symfony,gonzalovilaseca/symfony,maidmaid/symfony,jean-gui/symfony,Einenlum/symfony,havvg/symfony,pierredup/symfony,vincentaubert/symfony,georaldc/symfony,aeoris/symfony,OskarStark/symfony,frankdejonge/symfony,MatTheCat/symfony,kbond/symfony,1ed/symfony,lemoinem/symfony,inso/symfony,Einenlum/symfony,lstrojny/symfony,Einenlum/symfony,derrabus/symfony,oleg-andreyev/symfony,symfony/symfony,gonzalovilaseca/symfony,hacfi/symfony,michaelperrin/symfony,believer-ufa/symfony,OndraM/symfony,ewgRa/symfony,alekitto/symfony,1ed/symfony,phramz/symfony,zerustech/symfony,josephdpurcell/symfony,mpdude/symfony,Padam87/symfony,GuilhemN/symfony,WouterJ/symfony,apfelbox/symfony,andrerom/symfony,nasimnabavi/symfony,csarrazi/symfony,pix-art/symfony,ogizanagi/symfony,jakzal/symfony,zcodes/symfony,MatTheCat/symfony,mickaelandrieu/symfony,Tobion/symfony,mvhirsch/symfony,realityking/symfony,georaldc/symfony,voronkovich/symfony,tronsha/symfony,smatyas/symfony,tgalopin/symfony,jameshalsall/symfony,hacfi/symfony,derrabus/symfony,curry684/symfony,HeahDude/symfony,michaelperrin/symfony,jean-gui/symfony,jvasseur/symfony,webmozart/symfony,maidmaid/symfony,joelwurtz/symfony,hiddewie/symfony,DavidGarciaCat/symfony,mickaelandrieu/symfony,romainneutron/symfony,Ener-Getick/symfony,WouterJ/symfony,gencer/symfony,joelwurtz/symfony,ro0NL/symfony,chrisguitarguy/symfony,jjanvier/symfony,inso/symfony,believer-ufa/symfony,docteurklein/symfony,mpdude/symfony,nicolas-grekas/symfony,mvhirsch/symfony,gnat42/symfony,unexge/symfony,k0pernikus/symfony,dunglas/symfony,OndraM/symfony,HeahDude/symfony,bendavies/symfony,mweimerskirch/symfony,oleg-andreyev/symfony,sroze/symfony,jameshalsall/symfony,pierredup/symfony,paradajozsef/symfony,mweimerskirch/symfony,okdana/symfony,jakubsacha/symfony,zcodes/symfony,ogizanagi/symfony,csarrazi/symfony,sstok/symfony,voronkovich/symfony,mnapoli/symfony,SpacePossum/symfony,OskarStark/symfony,mihai-stancu/symfony,pyrech/symfony,phramz/symfony,zcodes/symfony,docteurklein/symfony,symfony/symfony,OndraM/symfony,Nyholm/symfony,realityking/symfony,josephdpurcell/symfony,patrick-mcdougle/symfony,fabpot/symfony,docteurklein/symfony,shieldo/symfony,Amo/symfony,Ocramius/symfony,pyrech/symfony,tucksaun/symfony,Koc/symfony,klandaika/symfony,patrick-mcdougle/symfony,josephdpurcell/symfony,jpauli/symfony,mvhirsch/symfony,klandaika/symfony,hacfi/symfony,sstok/symfony,mickaelandrieu/symfony,andrerom/symfony,gnat42/symfony,MisatoTremor/symfony,zorn-v/symfony,d-ph/symfony,joelwurtz/symfony,SaschaDens/symfony,curry684/symfony,aeoris/symfony,vincentaubert/symfony,zerkms/symfony,gnat42/symfony,dbu/symfony,jvasseur/symfony,yceruto/symfony,sstok/symfony,Triiistan/symfony,tgalopin/symfony,docteurklein/symfony,OndraM/symfony,ro0NL/symfony,havvg/symfony,ragboyjr/symfony,mihai-stancu/symfony,shieldo/symfony,iltar/symfony,aeoris/symfony,gimler/symfony,Padam87/symfony,WhiteEagle88/symfony,DavidGarciaCat/symfony,maidmaid/symfony,Nyholm/symfony,teohhanhui/symfony,lyrixx/symfony,arjenm/symfony,mihai-stancu/symfony,jakubsacha/symfony,jpauli/symfony,lstrojny/symfony,Pierstoval/symfony,Amo/symfony,xabbuh/symfony,Ocramius/symfony,jakzal/symfony,apfelbox/symfony,fabpot/symfony,deguif/symfony,michaelperrin/symfony,Taluu/symfony,csarrazi/symfony,andreia/symfony,hhamon/symfony,Triiistan/symfony,zerustech/symfony,jameshalsall/symfony,Aliance/symfony,mvhirsch/symfony,yceruto/symfony,Ener-Getick/symfony,Padam87/symfony,smatyas/symfony,yceruto/symfony,mnapoli/symfony,Tobion/symfony,DavidGarciaCat/symfony,dunglas/symfony,Deamon/symfony,tucksaun/symfony,tucksaun/symfony,tgalopin/symfony,Slamdunk/symfony,zorn-v/symfony,ajgarlag/symfony,Aliance/symfony,teohhanhui/symfony,chalasr/symfony,dosten/symfony,chrisguitarguy/symfony,Soullivaneuh/symfony,jpauli/symfony,chalasr/symfony,lemoinem/symfony,jpauli/symfony,derrabus/symfony,c960657/symfony,e-moe/symfony,pix-art/symfony,MisatoTremor/symfony,c960657/symfony,romainneutron/symfony,alekitto/symfony,danionut90/symfony,mpdude/symfony,pix-art/symfony,geoffrey-brier/symfony,Simperfit/symfony,hason/symfony,stof/symfony,tronsha/symfony,Simperfit/symfony,pamil/symfony,pamil/symfony,pix-art/symfony,Simperfit/symfony,jvasseur/symfony,Ocramius/symfony,ro0NL/symfony,d-ph/symfony,ogizanagi/symfony,superdav42/symfony,iltar/symfony,1ed/symfony,weaverryan/symfony,superdav42/symfony,sgehrig/symfony,xabbuh/symfony,gimler/symfony,Deamon/symfony,Deamon/symfony,tronsha/symfony,Slamdunk/symfony,chrisguitarguy/symfony,michaelperrin/symfony,paradajozsef/symfony,voronkovich/symfony,lyrixx/symfony,Amo/symfony,andrerom/symfony,romaricdrigon/symfony,geoffrey-brier/symfony,WhiteEagle88/symfony,realityking/symfony,Ener-Getick/symfony,jvasseur/symfony,1ed/symfony,gimler/symfony,danionut90/symfony,ajgarlag/symfony,derrabus/symfony,ro0NL/symfony,k0pernikus/symfony,zerkms/symfony,e-moe/symfony,webmozart/symfony,jzawadzki/symfony,fabpot/symfony,phramz/symfony,neemzy/symfony,yceruto/symfony,c960657/symfony,hhamon/symfony,phramz/symfony,mnapoli/symfony,webmozart/symfony,vincentaubert/symfony,neemzy/symfony,SpacePossum/symfony,backbone87/symfony,jpauli/symfony,mihai-stancu/symfony,MisatoTremor/symfony,stof/symfony,chalasr/symfony,e-moe/symfony,dosten/symfony,jean-gui/symfony,jderusse/symfony,okdana/symfony,jjanvier/symfony,klandaika/symfony,Slamdunk/symfony,Strate/symfony,lepiaf/symfony,dmaicher/symfony,docteurklein/symfony,inso/symfony,Soullivaneuh/symfony,andreia/symfony,WhiteEagle88/symfony,ajgarlag/symfony,realityking/symfony,hason/symfony,jzawadzki/symfony,Soullivaneuh/symfony,pix-art/symfony,sgehrig/symfony,Soullivaneuh/symfony,SaschaDens/symfony,chrisguitarguy/symfony,dmaicher/symfony,alekitto/symfony,lemoinem/symfony,kbond/symfony,nasimnabavi/symfony,natechicago/symfony,tgalopin/symfony,deguif/symfony,mickaelandrieu/symfony,jameshalsall/symfony,arjenm/symfony,localheinz/symfony,d-ph/symfony,hiddewie/symfony,OndraM/symfony,natechicago/symfony,geoffrey-brier/symfony,havvg/symfony,Triiistan/symfony,pierredup/symfony,SpacePossum/symfony,natechicago/symfony,dzuelke/symfony,dbu/symfony,sstok/symfony,garak/symfony,unexge/symfony,Ener-Getick/symfony,dbu/symfony,shieldo/symfony,Koc/symfony,lyrixx/symfony,Ener-Getick/symfony,jameshalsall/symfony,apetitpa/symfony,Ocramius/symfony,c960657/symfony,symfony/symfony,deguif/symfony,sgehrig/symfony,hason/symfony,Deamon/symfony,d-ph/symfony,natechicago/symfony,patrick-mcdougle/symfony,backbone87/symfony,weaverryan/symfony,Triiistan/symfony,smatyas/symfony,garak/symfony,hiddewie/symfony,believer-ufa/symfony,zorn-v/symfony,zerustech/symfony,Ocramius/symfony,Amo/symfony,MatTheCat/symfony,Strate/symfony,dmaicher/symfony,jjanvier/symfony,pamil/symfony,bendavies/symfony,georaldc/symfony,gonzalovilaseca/symfony,danionut90/symfony,georaldc/symfony,believer-ufa/symfony,mvhirsch/symfony,mnapoli/symfony,SaschaDens/symfony,gonzalovilaseca/symfony,jjanvier/symfony,apetitpa/symfony,Nyholm/symfony,jakzal/symfony,teohhanhui/symfony,localheinz/symfony,SaschaDens/symfony,weaverryan/symfony,nicolas-grekas/symfony,tronsha/symfony,klandaika/symfony,natechicago/symfony,romainneutron/symfony,pamil/symfony,bendavies/symfony,dbu/symfony,bendavies/symfony,jpauli/symfony,backbone87/symfony,Aliance/symfony,superdav42/symfony,hhamon/symfony,gimler/symfony,Engerim/symfony,havvg/symfony,paradajozsef/symfony,k0pernikus/symfony,Koc/symfony,codeclimate-testing/symfony,damienalexandre/symfony,inso/symfony,damienalexandre/symfony,tronsha/symfony,sroze/symfony,lyrixx/symfony,shieldo/symfony,believer-ufa/symfony,Triiistan/symfony,paradajozsef/symfony,sstok/symfony,zcodes/symfony,kbond/symfony,garak/symfony,ragboyjr/symfony,iltar/symfony,chalasr/symfony,jakubsacha/symfony,nasimnabavi/symfony,tronsha/symfony,jakubsacha/symfony,believer-ufa/symfony,e-moe/symfony,frankdejonge/symfony,ragboyjr/symfony,voronkovich/symfony,HeahDude/symfony,superdav42/symfony,nasimnabavi/symfony,apetitpa/symfony,hiddewie/symfony,sroze/symfony,weaverryan/symfony,romaricdrigon/symfony,HeahDude/symfony,klandaika/symfony,apfelbox/symfony,georaldc/symfony,pix-art/symfony,danionut90/symfony,Pierstoval/symfony,Pierstoval/symfony,stof/symfony,sgehrig/symfony,mickaelandrieu/symfony,tucksaun/symfony,Ener-Getick/symfony,danionut90/symfony,ajgarlag/symfony,Slamdunk/symfony,mnapoli/symfony,romaricdrigon/symfony,webmozart/symfony,ewgRa/symfony,jjanvier/symfony,dzuelke/symfony,natechicago/symfony,frankdejonge/symfony,unexge/symfony,apetitpa/symfony,pyrech/symfony,codeclimate-testing/symfony,Strate/symfony,kbond/symfony,stof/symfony,MisatoTremor/symfony,geoffrey-brier/symfony,ogizanagi/symfony,nicolas-grekas/symfony,mihai-stancu/symfony,k0pernikus/symfony,ewgRa/symfony,dmaicher/symfony,MisatoTremor/symfony,smatyas/symfony,geoffrey-brier/symfony,Engerim/symfony,dosten/symfony,Tobion/symfony,curry684/symfony,k0pernikus/symfony,lepiaf/symfony,dzuelke/symfony,zerkms/symfony,xabbuh/symfony,havvg/symfony,andrerom/symfony,vincentaubert/symfony,smatyas/symfony,GuilhemN/symfony,ewgRa/symfony,romaricdrigon/symfony,superdav42/symfony,Taluu/symfony,Taluu/symfony,Nyholm/symfony,GuilhemN/symfony,MisatoTremor/symfony,zorn-v/symfony,Padam87/symfony,Simperfit/symfony,Engerim/symfony,unexge/symfony,ewgRa/symfony,realityking/symfony,pyrech/symfony,lstrojny/symfony,Einenlum/symfony,jean-gui/symfony,webmozart/symfony,OskarStark/symfony,zerkms/symfony,symfony/symfony,lemoinem/symfony,damienalexandre/symfony,unexge/symfony,Deamon/symfony,codeclimate-testing/symfony,SaschaDens/symfony,romainneutron/symfony,oleg-andreyev/symfony,Soullivaneuh/symfony,SpacePossum/symfony,MatTheCat/symfony,oleg-andreyev/symfony,danionut90/symfony,okdana/symfony,jzawadzki/symfony,alekitto/symfony,zerustech/symfony,dunglas/symfony,Padam87/symfony,Ocramius/symfony,Simperfit/symfony,andreia/symfony,hhamon/symfony,mweimerskirch/symfony,Amo/symfony,jakzal/symfony,andreia/symfony,zerustech/symfony,Taluu/symfony,hiddewie/symfony,pierredup/symfony,jderusse/symfony,dosten/symfony,inso/symfony,apfelbox/symfony,localheinz/symfony,nicolas-grekas/symfony,dbu/symfony,dosten/symfony,WouterJ/symfony,lemoinem/symfony,joelwurtz/symfony,superdav42/symfony,jderusse/symfony,dzuelke/symfony,codeclimate-testing/symfony,OskarStark/symfony,ragboyjr/symfony,lepiaf/symfony,GuilhemN/symfony,gnat42/symfony,deguif/symfony,geoffrey-brier/symfony,mpdude/symfony,arjenm/symfony,teohhanhui/symfony,xabbuh/symfony,garak/symfony,iltar/symfony,chrisguitarguy/symfony,fabpot/symfony,Tobion/symfony,sroze/symfony