Before: call ale#assert#SetUpLinterTest('java', 'javalsp') After: call ale#assert#TearDownLinterTest() Execute(The javalsp callback should return the correct default value): AssertLinter 'java', ale#Escape('java') . ' -Xverify:none -m javacs/org.javacs.Main' Execute(The javalsp java executable should be configurable): let b:ale_java_javalsp_executable = '/bin/foobar' AssertLinter '/bin/foobar', ale#Escape('/bin/foobar') . ' -Xverify:none -m javacs/org.javacs.Main'