Before: call ale#assert#SetUpLinterTest('julia', 'languageserver') After: call ale#assert#TearDownLinterTest() Execute(The default executable path should be correct): AssertLinter 'julia', \'julia' . \' --startup-file=no --history-file=no -e ' . \ ale#Escape('using LanguageServer; server = LanguageServer.LanguageServerInstance(STDIN, STDOUT, false); server.runlinter = true; run(server);') Execute(The executable should be configurable): let g:ale_julia_executable = 'julia-new' AssertLinter 'julia-new', \'julia-new' . \' --startup-file=no --history-file=no -e ' . \ ale#Escape('using LanguageServer; server = LanguageServer.LanguageServerInstance(STDIN, STDOUT, false); server.runlinter = true; run(server);') Execute(The project root should be detected correctly): AssertLSPProject '' call ale#test#SetFilename('julia-languageserver-project/test.jl') AssertLSPProject ale#path#Simplify(g:dir . '/julia-languageserver-project')