Before: runtime ale_linters/ruby/rubocop.vim call ale#test#SetDirectory('/testplugin/test/') After: Restore call ale#linter#Reset() call ale#test#RestoreDirectory() Execute(Should require the nearest features dir, if one is found): call ale#test#SetFilename('cucumber_fixtures/features/cuke.feature') AssertEqual \ 'cucumber --dry-run --quiet --strict --format=json ' \ . '-r ' . ale#Escape(ale#path#Simplify(g:dir . '/cucumber_fixtures/features/')) . ' %t', \ ale_linters#cucumber#cucumber#GetCommand(bufnr('')) Execute(Should require nothing if no features dir is found): call ale#test#SetFilename('something/without/a/features/dir') AssertEqual \ 'cucumber --dry-run --quiet --strict --format=json ' \ . ' %t', \ ale_linters#cucumber#cucumber#GetCommand(bufnr(''))