Before:
  call ale#assert#SetUpLinterTest('lilypond', 'lilypond')
  call ale#test#SetFilename('test.ly')

  let g:ale_lilypond_lilypond_executable = 'lilypond'
  let g:ale_lilypond_lilypond_options = ''

After:
  call ale#assert#TearDownLinterTest()

Execute(The executable should default to lilypond):
  AssertLinter 'lilypond',
  \ ale#Escape('lilypond') . ' --loglevel=WARNING -dbackend=null -dno-print-pages -o /tmp %t 2>&1'

Execute(Should be able to set a custom executable):
  let g:ale_lilypond_lilypond_executable = 'bin/lilypond'

  AssertLinter 'bin/lilypond',
  \ ale#Escape('bin/lilypond') . ' --loglevel=WARNING -dbackend=null -dno-print-pages -o /tmp %t 2>&1'

Execute(Should be able to set custom options):
  let g:ale_lilypond_lilypond_options = '--include=/path/to/includes'

  AssertLinter 'lilypond',
  \ ale#Escape('lilypond') . ' --loglevel=WARNING -dbackend=null -dno-print-pages -o /tmp'
  \ . ' --include=/path/to/includes %t 2>&1'

Execute(Should be able to set both custom executable and options):
  let g:ale_lilypond_lilypond_executable = '/usr/local/bin/lilypond'
  let g:ale_lilypond_lilypond_options = '--include=/custom/path -dlog-file=/tmp/lily.log'

  AssertLinter '/usr/local/bin/lilypond',
  \ ale#Escape('/usr/local/bin/lilypond') . ' --loglevel=WARNING -dbackend=null -dno-print-pages -o /tmp'
  \ . ' --include=/custom/path -dlog-file=/tmp/lily.log %t 2>&1'