Before: call ale#assert#SetUpLinterTest('zig', 'zlint') After: call ale#assert#TearDownLinterTest() Execute(The zlint executable and command should be configured correctly): " Set a custom executable path let g:ale_zig_zlint_executable = '/custom/path/to/zlint' " Create a buffer with Zig filetype call ale#test#SetFilename('test.zig') " Check the executable AssertEqual '/custom/path/to/zlint', ale#Var(bufnr(''), 'zig_zlint_executable') " Check the command let cmd = ale_linters#zig#zlint#GetCommand(bufnr('')) AssertEqual ale#Escape('/custom/path/to/zlint') . ' %s -f gh', cmd