Before:
  call ale#assert#SetUpLinterTest('fortran', 'gcc')

After:
  call ale#assert#TearDownLinterTest()

Execute(The default fortran gcc command should be correct):
  AssertLinter 'gcc', ale#Escape('gcc') . ' -S -x f95 -fsyntax-only -ffree-form -Wall -'

Execute(The fortran gcc executable and command should be configurable):
  let g:ale_fortran_gcc_executable = 'gfortran'
  let g:ale_fortran_gcc_options = '-Wotherthings'

  AssertLinter 'gfortran', ale#Escape('gfortran')
  \ . ' -S -x f95 -fsyntax-only -ffree-form -Wotherthings -'

Execute(The fortran gcc linter should allow you to use -ffixed-form):
  let g:ale_fortran_gcc_use_free_form = 0

  AssertLinter 'gcc', ale#Escape('gcc') . ' -S -x f95 -fsyntax-only -ffixed-form -Wall -'