Before: call ale#assert#SetUpLinterTest('javascript', 'jscs') After: call ale#assert#TearDownLinterTest() Execute(Should return the correct default values): AssertLinter 'jscs', \ ale#Escape('jscs') . ' --reporter inline --no-colors -' Execute(Should allow using a custom executable): let g:ale_javascript_jscs_executable = 'foobar' AssertLinter 'foobar', \ ale#Escape('foobar') . ' --reporter inline --no-colors -'