Before:
  Save g:ale_c_build_dir
  Save g:ale_c_clangtidy_executable
  Save g:ale_c_clangtidy_checks
  Save g:ale_c_clangtidy_extra_options
  Save g:ale_cpp_clangtidy_executable
  Save g:ale_cpp_clangtidy_checks
  Save g:ale_cpp_clangtidy_extra_options

  " Use an invalid global executable, so we don't match it.
  let g:ale_c_clangtidy_executable = 'xxxinvalid'
  let g:ale_c_clangtidy_checks = []
  let g:ale_c_clangtidy_extra_options = ''
  let g:ale_cpp_clangtidy_executable = 'xxxinvalidpp'
  let g:ale_cpp_clangtidy_checks = []
  let g:ale_cpp_clangtidy_extra_options = ''
  let g:ale_c_build_dir = ''

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

After:
  Restore

  call ale#test#RestoreDirectory()

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

  AssertEqual
  \ {
  \   'read_temporary_file': 1,
  \   'command': ale#Escape(g:ale_c_clangtidy_executable)
  \       . ' -fix -fix-errors %t'
  \ },
  \ ale#fixers#clangtidy#Fix(bufnr(''))

Execute(The clangtidy callback should include any additional options):
  call ale#test#SetFilename('../test-files/c/dummy.c')
  let g:ale_c_clangtidy_extra_options = '--some-option'

  AssertEqual
  \ {
  \   'read_temporary_file': 1,
  \   'command': ale#Escape(g:ale_c_clangtidy_executable)
  \     . ' -fix -fix-errors --some-option %t',
  \ },
  \ ale#fixers#clangtidy#Fix(bufnr(''))