Before: call ale#assert#SetUpLinterTest('fortran', 'gcc') After: call ale#assert#TearDownLinterTest() Execute(The fortran gcc command callback should return the correct default string): AssertLinter 'gcc', 'gcc -S -x f95 -fsyntax-only -ffree-form -Wall -' Execute(The fortran gcc command callback should let you set options): let g:ale_fortran_gcc_options = '-Wotherthings' AssertLinter 'gcc', 'gcc -S -x f95 -fsyntax-only -ffree-form -Wotherthings -' Execute(The fortran gcc command callback should let you use -ffixed-form): let g:ale_fortran_gcc_use_free_form = 0 AssertLinter 'gcc', 'gcc -S -x f95 -fsyntax-only -ffixed-form -Wall -' Execute(The fortran executable should be configurable): let g:ale_fortran_gcc_executable = 'gfortran' AssertLinter 'gfortran', \ 'gfortran -S -x f95 -fsyntax-only -ffree-form -Wall -'