Before:
  call ale#assert#SetUpLinterTest('haskell', 'hlint')

  let b:base_opts = '--color=never --json -'

After:
  unlet! b:base_opts
  call ale#assert#TearDownLinterTest()

Execute(executable should be configurable):
  AssertLinter 'hlint', ale#Escape('hlint') . '  ' . b:base_opts
  let b:ale_haskell_hlint_executable = 'myHlint'
  AssertLinter 'myHlint', ale#Escape('myHlint') . '  ' . b:base_opts

Execute(should accept options):
  let b:ale_haskell_hlint_options= '-h myhlintfile.yaml'
  AssertLinter 'hlint', ale#Escape('hlint') . ' -h myhlintfile.yaml ' . b:base_opts