Before:
  Save g:ale_hack_hackfmt_executable
  Save g:ale_hack_hackfmt_options

  " Use an invalid global executable, so we don't match it.
  let g:ale_hack_hackfmt_executable = 'xxxinvalid'
  let g:ale_hack_hackfmt_options = ''

  call ale#test#SetDirectory('/testplugin/test/fixers')

After:
  Restore

  call ale#test#RestoreDirectory()

Execute(The hackfmt callback should return the correct default values):
  call ale#test#SetFilename('../hack_files/testfile.hack')

  AssertEqual
  \ {
  \   'read_temporary_file': 1,
  \   'command': ale#Escape('xxxinvalid')
  \     . ' -i %t',
  \ },
  \ ale#fixers#hackfmt#Fix(bufnr(''))

Execute(The hackfmt callback should include custom hackfmt options):
  let g:ale_hack_hackfmt_options = "--some-option"
  call ale#test#SetFilename('../hack_files/testfile.hack')

  AssertEqual
  \ {
  \   'read_temporary_file': 1,
  \   'command': ale#Escape('xxxinvalid')
  \     . ' -i --some-option %t',
  \ },
  \ ale#fixers#hackfmt#Fix(bufnr(''))
