Before:
  Save g:ale_ruby_rufo_executable

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

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

After:
  Restore

  call ale#test#RestoreDirectory()

Execute(The rufo command should contain `bundle exec` when executable is `bundle`):
  let g:ale_ruby_rufo_executable = 'bundle'
  call ale#test#SetFilename('../test-files/ruby/dummy.rb')

  AssertEqual
  \ ale#Escape('bundle') . ' exec rufo %t',
  \ ale#fixers#rufo#GetCommand(bufnr(''))

Execute(The rufo callback should return the correct default values):
  call ale#test#SetFilename('../test-files/ruby/dummy.rb')

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