Before: call ale#assert#SetUpLinterTest('pony', 'ponyc') After: call ale#assert#TearDownLinterTest() Execute(The default ponyc command should be correct): AssertLinter 'ponyc', ale#Escape('ponyc') . ' --pass paint' Execute(The pony executable and options should be configurable): let b:ale_pony_ponyc_executable = 'foobar' let b:ale_pony_ponyc_options = '--some-option' AssertLinter 'foobar', ale#Escape('foobar') . ' --some-option'