Before:
  call ale#assert#SetUpLinterTest('avra', 'avra')

  let b:command_tail = ' %t -o ' . g:ale#util#nul_file
  let b:command_tail_opt = ' %t --max_errors 20 -o ' . g:ale#util#nul_file

After:
  unlet! b:command_tail
  unlet! b:command_tail_opt

  call ale#assert#TearDownLinterTest()

Execute(The executable should be configurable):
  AssertLinter 'avra', ale#Escape('avra') . b:command_tail,

  let b:ale_avra_avra_executable = '~/avra'

  AssertLinter '~/avra', ale#Escape('~/avra') . b:command_tail

Execute(The options should be configurable):
  let b:ale_avra_avra_options = '--max_errors 20'

  AssertLinter 'avra', ale#Escape('avra')
  \ . ' %t --max_errors 20 -o ' . g:ale#util#nul_file

Execute(The options should be used in command):
  let b:ale_avra_avra_options = '--max_errors 20'

  AssertLinter 'avra', ale#Escape('avra') . b:command_tail_opt