Before: Save g:ale_php_cs_fixer_executable Save g:ale_php_cs_fixer_options let g:ale_php_cs_fixer_executable = 'php-cs-fixer' let g:ale_php_cs_fixer_options = '' call ale#test#SetDirectory('/testplugin/test/fixers') silent cd .. silent cd command_callback let g:dir = getcwd() After: Restore call ale#test#RestoreDirectory() Execute(project with php-cs-fixer should use local by default): call ale#test#SetFilename('../test-files/php/project-with-php-cs-fixer/test.php') AssertEqual \ ale#path#Simplify(g:dir . '/../test-files/php/project-with-php-cs-fixer/vendor/bin/php-cs-fixer'), \ ale#fixers#php_cs_fixer#GetExecutable(bufnr('')) Execute(use-global should override local detection): let g:ale_php_cs_fixer_use_global = 1 call ale#test#SetFilename('../test-files/php/project-with-php-cs-fixer/test.php') AssertEqual \ 'php-cs-fixer', \ ale#fixers#php_cs_fixer#GetExecutable(bufnr('')) Execute(project without php-cs-fixer should use global): call ale#test#SetFilename('../test-files/php/project-without-php-cs-fixer/test.php') AssertEqual \ 'php-cs-fixer', \ ale#fixers#php_cs_fixer#GetExecutable(bufnr('')) Execute(The php-cs-fixer callback should return the correct default values): call ale#test#SetFilename('../test-files/php/project-without-php-cs-fixer/foo/test.php') AssertEqual \ { \ 'read_temporary_file': 1, \ 'command': ale#Escape('php-cs-fixer') \ . ' ' . g:ale_php_cs_fixer_options \ . ' fix %t' \ }, \ ale#fixers#php_cs_fixer#Fix(bufnr('')) Execute(The php-cs-fixer callback should include custom php-cs-fixer options): let g:ale_php_cs_fixer_options = '--config="$HOME/.php_cs"' call ale#test#SetFilename('../test-files/php/project-without-php-cs-fixer/test.php') AssertEqual \ { \ 'command': ale#Escape(g:ale_php_cs_fixer_executable) \ . ' --config="$HOME/.php_cs" fix %t', \ 'read_temporary_file': 1, \ }, \ ale#fixers#php_cs_fixer#Fix(bufnr(''))