Before:
  Save g:ale_buffer_info
  Save g:ale_enabled
  Save g:ale_set_quickfix
  Save g:ale_set_loclist
  Save g:ale_open_list

  let g:ale_buffer_info = {}
  let g:ale_enabled = 1
  let g:ale_set_quickfix = 0
  let g:ale_set_loclist = 0
  let g:ale_open_list = 1

  let g:expected_loclist = [{
  \ 'bufnr': bufnr('%'),
  \ 'lnum': 2,
  \ 'vcol': 0,
  \ 'col': 3,
  \ 'text': 'foo bar',
  \ 'type': 'E',
  \ 'nr': -1,
  \ 'pattern': '',
  \ 'valid': 1,
  \}]

  function! ToggleTestCallback(buffer, output)
    return [{
    \ 'bufnr': a:buffer,
    \ 'lnum': 2,
    \ 'vcol': 0,
    \ 'col': 3,
    \ 'text': join(split(a:output[0])),
    \ 'type': 'E',
    \ 'nr': -1,
    \}]
  endfunction

  call ale#linter#Define('foobar', {
  \ 'name': 'testlinter',
  \ 'callback': 'ToggleTestCallback',
  \ 'executable': has('win32') ? 'cmd' : 'echo',
  \ 'command': 'echo foo bar',
  \})

After:
  Restore

  unlet! g:expected_loclist
  unlet! b:i

  call ale#engine#Cleanup(bufnr(''))
  call ale#linter#Reset()

  " Not sure this is necessary since it was Save/Restore-d
  let g:ale_buffer_info = {}

  delfunction ToggleTestCallback

Given foobar (Some imaginary filetype):
  foo
  bar
  baz

Execute(ALEPopulateQuickfix should have results):
  AssertEqual 'foobar', &filetype

  " Clear so we can check that they're unmodified.
  call setqflist([])
  call setloclist(winnr(), [])

  " Try to run the linter a few times, as it fails randomly in NeoVim.
  for b:i in range(5)
    ALELint
    call ale#test#WaitForJobs(2000)

    if !has('nvim')
      " Sleep so the delayed list function can run.
      " This breaks the tests in NeoVim for some reason.
      sleep 1ms
    endif

    if ale#test#GetLoclistWithoutNewerKeys() == g:expected_loclist
      break
    endif
  endfor


  AssertEqual [], ale#test#GetLoclistWithoutNewerKeys()
  AssertEqual [], ale#test#GetQflistWithoutNewerKeys()

  ALEPopulateLocList
  AssertNotEqual 0, get(getloclist(0, {'winid':0}), 'winid', 0)
  AssertEqual g:expected_loclist, ale#test#GetLoclistWithoutNewerKeys()

  ALEPopulateQuickfix
  AssertEqual g:expected_loclist, ale#test#GetQflistWithoutNewerKeys()