Before: let g:ale_chef_foodcritic_options = '-t ~F011' let g:ale_chef_foodcritic_executable = 'foodcritic' call ale#test#SetDirectory('/testplugin/test') runtime ale_linters/chef/foodcritic.vim After: let g:ale_chef_foodcritic_options = '' let g:ale_chef_foodcritic_executable = '' call ale#test#RestoreDirectory() call ale#linter#Reset() Execute(command line should be assembled correctly): AssertEqual \ 'foodcritic -t \~F011 %t', \ ale_linters#chef#foodcritic#GetCommand(bufnr(''))