Before: Save g:ale_perl_perlcritic_profile Save g:ale_perl_perlcritic_options Save g:ale_perl_perlcritic_executable Save g:ale_perl_perlcritic_showrules unlet! g:ale_perl_perlcritic_options unlet! g:ale_perl_perlcritic_executable unlet! g:ale_perl_perlcritic_showrules let g:ale_perl_perlcritic_profile = '' runtime ale_linters/perl/perlcritic.vim call ale#test#SetDirectory('/testplugin/test/command_callback') call ale#test#SetFilename('test.pl') After: Restore unlet! b:ale_perl_perlcritic_profile unlet! b:ale_perl_perlcritic_options unlet! b:ale_perl_perlcritic_executable unlet! b:ale_perl_perlcritic_showrules unlet! b:readme_path call ale#test#RestoreDirectory() call ale#linter#Reset() Execute(The command should be correct with g:ale_perl_perlcritic_showrules off): let b:ale_perl_perlcritic_showrules = 0 AssertEqual \ ale#Escape('perlcritic') \ . ' --verbose ' . ale#Escape('%l:%c %m\n') \ . ' --nocolor', \ ale_linters#perl#perlcritic#GetCommand(bufnr('')) Execute(The command should be correct with g:ale_perl_perlcritic_showrules on): let b:ale_perl_perlcritic_showrules = 1 AssertEqual \ ale#Escape('perlcritic') \ . ' --verbose ' . ale#Escape('%l:%c %m [%p]\n') \ . ' --nocolor', \ ale_linters#perl#perlcritic#GetCommand(bufnr('')) Execute(The command search for the profile file when set): let b:ale_perl_perlcritic_profile = 'README.md' let b:readme_path = ale#path#Simplify(expand('%:p:h:h:h') . '/README.md') AssertEqual \ ale#Escape('perlcritic') \ . ' --verbose ' . ale#Escape('%l:%c %m\n') \ . ' --nocolor' \ . ' --profile ' . ale#Escape(b:readme_path), \ ale_linters#perl#perlcritic#GetCommand(bufnr('')) Execute(Extra options should be set appropriately): let b:ale_perl_perlcritic_options = 'beep boop' AssertEqual \ ale#Escape('perlcritic') \ . ' --verbose ' . ale#Escape('%l:%c %m\n') \ . ' --nocolor' \ . ' beep boop', \ ale_linters#perl#perlcritic#GetCommand(bufnr(''))