Before: Save g:ale_ruby_sorbet_executable Save g:ale_ruby_sorbet_options " Use an invalid global executable, so we don't match it. let g:ale_ruby_sorbet_executable = 'xxxinvalid' let g:ale_ruby_sorbet_options = '' call ale#test#SetDirectory('/testplugin/test/fixers') After: Restore call ale#test#RestoreDirectory() Execute(The sorbet callback should return the correct default values): call ale#test#SetFilename('../test-files/ruby/dummy.rb') AssertEqual \ { \ 'read_temporary_file': 1, \ 'command': ale#Escape(g:ale_ruby_sorbet_executable) \ . ' tc --autocorrect --file %t', \ }, \ ale#fixers#sorbet#Fix(bufnr('')) Execute(The sorbet callback should include custom sorbet options): let g:ale_ruby_sorbet_options = '--enable-experimental-lsp-hover' call ale#test#SetFilename('../test-files/ruby/with_config/dummy.rb') AssertEqual \ { \ 'read_temporary_file': 1, \ 'command': ale#Escape(g:ale_ruby_sorbet_executable) \ . ' tc --enable-experimental-lsp-hover' \ . ' --autocorrect --file %t', \ }, \ ale#fixers#sorbet#Fix(bufnr(''))