Before: call ale#assert#SetUpLinterTest('qml', 'qmlfmt') After: call ale#assert#TearDownLinterTest() Execute(The qml qmlfmt command callback should return the correct default string): AssertLinter 'qmlfmt', ale#Escape('qmlfmt') . ' -e', Execute(The qmlfmt executable should be configurable): let g:ale_qml_qmlfmt_executable = '~/.local/bin/qmlfmt' AssertLinter '~/.local/bin/qmlfmt', ale#Escape('~/.local/bin/qmlfmt') . ' -e'