Before: call ale#assert#SetUpFixerTest('lua', 'stylua') After: call ale#assert#TearDownFixerTest() Execute(The default command should be correct): AssertFixer {'cwd': '%s:h', 'command': ale#Escape('stylua') . ' --stdin-filepath %s -'} Execute(The stylua callback should include custom stylua options): let g:ale_lua_stylua_executable = 'xxxinvalid' let g:ale_lua_stylua_options = '--search-parent-directories' AssertFixer \ { \ 'cwd': '%s:h', \ 'command': ale#Escape('xxxinvalid') \ . ' ' . g:ale_lua_stylua_options \ . ' --stdin-filepath %s -', \ } Execute(stylua should detect stylua.toml): call ale#test#SetFilename('../test-files/stylua/stylua_config_dir/subdir/test.lua') AssertFixer \ { \ 'cwd': ale#path#Simplify(g:dir . '/../test-files/stylua/stylua_config_dir'), \ 'command': ale#Escape('stylua') . ' --stdin-filepath %s -', \ } Execute(stylua should detect .stylua.toml): call ale#test#SetFilename('../test-files/stylua/stylua_dot_config_dir/subdir/test.lua') AssertFixer \ { \ 'cwd': ale#path#Simplify(g:dir . '/../test-files/stylua/stylua_dot_config_dir'), \ 'command': ale#Escape('stylua') . ' --stdin-filepath %s -', \ }