Before:
  Save g:ale_kotlin_ktlint_executable
  Save g:ale_kotlin_ktlint_options
  Save g:ale_kotlin_ktlint_rulesets

  " Use an invalid global executable, so we don't match it.
  let g:ale_kotlin_ktlint_executable = 'xxxinvalid'
  let g:ale_kotlin_ktlint_options = ''
  let g:ale_kotlin_ktlint_rulesets = []

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

After:
  Restore

  call ale#test#RestoreDirectory()

Execute(The ktlint callback should return the correct default values):
  call ale#test#SetFilename('../test-files/kotlin/testfile.kt')

  AssertEqual
  \ {
  \   'command': ale#Escape('xxxinvalid')
  \     . ' --stdin'
  \     . ' --format',
  \ },
  \ ale#fixers#ktlint#Fix(bufnr(''))

Execute(The ktlint callback should include custom ktlint options):
  let g:ale_kotlin_ktlint_options = "--android"
  let g:ale_kotlin_ktlint_rulesets = ['/path/to/custom/ruleset.jar']
  call ale#test#SetFilename('../test-files/kotlin/testfile.kt')

  AssertEqual
  \ {
  \   'command': ale#Escape('xxxinvalid')
  \     . ' ' . g:ale_kotlin_ktlint_options
  \     . ' --ruleset /path/to/custom/ruleset.jar'
  \     . ' --stdin'
  \     . ' --format',
  \ },
  \ ale#fixers#ktlint#Fix(bufnr(''))