Before:
  Save g:ale_jsonnet_jsonnetfmt_executable
  Save g:ale_jsonnet_jsonnetfmt_options

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

  call ale#test#SetDirectory('/testplugin/test/fixers')
  call ale#assert#SetUpFixerTest('jsonnet', 'jsonnetfmt')

After:
  call ale#test#RestoreDirectory()
  call ale#assert#TearDownFixerTest()

Execute(The jsonnetfmt callback should return the correct default values):
  call ale#test#SetFilename('../jsonnet_files/testfile.jsonnet')

  AssertFixer {
  \   'read_temporary_file': 1,
  \   'command': ale#Escape(g:ale_jsonnet_jsonnetfmt_executable)
  \     . ' -i'
  \     . ' %t',
  \}

Execute(The jsonnetfmt callback should include custom options):
  let g:ale_jsonnet_jsonnetfmt_options = '--pad-arrays'

  call ale#test#SetFilename('../jsonnet_files/testfile.jsonnet')

  AssertFixer {
  \   'read_temporary_file': 1,
  \   'command': ale#Escape(g:ale_jsonnet_jsonnetfmt_executable)
  \     . ' -i'
  \     . ' ' . g:ale_jsonnet_jsonnetfmt_options
  \     . ' %t',
  \}