View.js has already been migrated to webpack's control via T203100, but its associated tests proved to be challenging to migrate due to tight coupling with dependencies ( e.g. jQuery) and a lot of stubbing in its place. It was thus decided to leave its test file as is and migrate it in a future card (this one).
To review the work already done on this, see (and feel free to abandon): https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/MobileFrontend/+/458883/
A discussion needs to be had on how much stubbing / spying we feel comfortable with on this.
= Acceptance criteria
 test_View.js is migrated to tests/node-qunit/mobile.startup and can be run from headless qunit
 Revise/move/remove any tests that don't test View's responsibility. Note: some tests feel like they test the functionality of mfExtend more than View's code
Note: Adding additional test coverage is out of scope and will be added separately.
= Sign off steps
 Measure and record code coverage on [[ https://www.mediawiki.org/wiki/Reading/Web/Projects/Invest_in_the_MobileFrontend_%26_MinervaNeue_frontend_architecture/Progress?useskin=vector | the wiki page ]]