Before: silent! cd /testplugin/test silent file top/middle/bottom/dummy.txt After: unlet! g:result unlet! g:match Execute(FormatCommand should do nothing to basic command strings): AssertEqual ['', 'awesome-linter do something'], ale#command#FormatCommand(bufnr('%'), 'awesome-linter do something', 0) Execute(FormatCommand should handle %%, and ignore other percents): AssertEqual ['', '% %%d %%f %x %'], ale#command#FormatCommand(bufnr('%'), '%% %%%d %%%f %x %', 0) Execute(FormatCommand should convert %s to the current filename): AssertEqual ['', 'foo ' . shellescape(expand('%:p')) . ' bar ' . shellescape(expand('%:p'))], ale#command#FormatCommand(bufnr('%'), 'foo %s bar %s', 0) Execute(FormatCommand should convert %t to a new temporary filename): let g:result = ale#command#FormatCommand(bufnr('%'), 'foo %t bar %t', 0) let g:match = matchlist(g:result[1], '\v^foo (''/tmp/[^'']*/dummy.txt'') bar (''/tmp/[^'']*/dummy.txt'')$') Assert !empty(g:match), 'No match found! Result was: ' . g:result[1] " The first item of the result should be a temporary filename, and it should " be the same as the escaped name in the command string. AssertEqual shellescape(g:result[0]), g:match[1] " The two temporary filenames formatted in should be the same. AssertEqual g:match[1], g:match[2] Execute(FormatCommand should let you combine %s and %t): let g:result = ale#command#FormatCommand(bufnr('%'), 'foo %t bar %s', 0) let g:match = matchlist(g:result[1], '\v^foo (''/tmp/.*/dummy.txt'') bar (''.*/dummy.txt'')$') Assert !empty(g:match), 'No match found! Result was: ' . g:result[1] " The first item of the result should be a temporary filename, and it should " be the same as the escaped name in the command string. AssertEqual shellescape(g:result[0]), g:match[1] " The second item should be equal to the original filename. AssertEqual shellescape(expand('%:p')), g:match[2] Execute(EscapeCommandPart should escape all percent signs): AssertEqual '%%s %%t %%%% %%s %%t %%%%', ale#engine#EscapeCommandPart('%s %t %% %s %t %%') Execute(EscapeCommandPart should pipe in temporary files appropriately): let g:result = ale#command#FormatCommand(bufnr('%'), 'foo bar', 1) let g:match = matchlist(g:result[1], '\v^foo bar \< (''/tmp/[^'']*/dummy.txt'')$') Assert !empty(g:match), 'No match found! Result was: ' . g:result[1] AssertEqual shellescape(g:result[0]), g:match[1] let g:result = ale#command#FormatCommand(bufnr('%'), 'foo bar %t', 1) let g:match = matchlist(g:result[1], '\v^foo bar (''/tmp/[^'']*/dummy.txt'')$') Assert !empty(g:match), 'No match found! Result was: ' . g:result[1] AssertEqual shellescape(g:result[0]), g:match[1]