Before:
  Save g:ale_fix_on_save
  Save g:ale_enabled
  Save g:ale_run_synchronously
  Save g:ale_set_lists_synchronously
  Save g:ale_buffer_info
  Save g:ale_linters

  let g:ale_buffer_info = {}
  let g:ale_run_synchronously = 1
  unlet! g:ale_run_synchronously_callbacks
  let g:ale_set_lists_synchronously = 1
  let b:ale_save_event_fired = 0

  let g:buffer_result = [
  \ {
  \   'lnum': 1,
  \   'col': 1,
  \   'text': 'buffer error',
  \   'type': 'E',
  \ },
  \ {
  \   'lnum': 2,
  \   'col': 1,
  \   'text': 'buffer warning',
  \   'type': 'W',
  \ },
  \]

  function! LintFileCallback(buffer, output)
    return [
    \ {
    \   'lnum': 1,
    \   'col': 3,
    \   'text': 'file warning',
    \   'type': 'W',
    \ },
    \ {
    \   'lnum': 2,
    \   'col': 3,
    \   'text': 'file error',
    \   'type': 'E',
    \ },
    \]
  endfunction

  function! BufferCallback(buffer, output)
    return deepcopy(g:buffer_result)
  endfunction

  function! GetSimplerLoclist()
    let l:loclist = []

    for l:item in ale#test#GetLoclistWithoutNewerKeys()
      call add(l:loclist, {
      \ 'lnum': l:item.lnum,
      \ 'col': l:item.col,
      \ 'text': l:item.text,
      \ 'type': l:item.type,
      \})
    endfor

    return l:loclist
  endfunction

  call ale#linter#Define('foobar', {
  \ 'name': 'lint_file_linter',
  \ 'callback': 'LintFileCallback',
  \ 'executable': has('win32') ? 'cmd' : 'echo',
  \ 'command': 'echo',
  \ 'lint_file': 1,
  \})

  call ale#linter#Define('foobar', {
  \ 'name': 'buffer_linter',
  \ 'callback': 'BufferCallback',
  \ 'executable': has('win32') ? 'cmd' : 'echo',
  \ 'command': 'echo',
  \ 'read_buffer': 0,
  \})

  let g:filename = tempname()
  call writefile([], g:filename)
  call ale#test#SetFilename(g:filename)

After:
  if !g:ale_run_synchronously
    call ale#engine#Cleanup(bufnr(''))
  endif

  Restore

  unlet! g:ale_run_synchronously_callbacks
  unlet! b:ale_save_event_fired
  unlet! b:ale_enabled
  unlet g:buffer_result
  let g:ale_buffer_info = {}
  call ale#linter#Reset()
  call setloclist(0, [])
  delfunction LintFileCallback
  delfunction BufferCallback

  if filereadable(g:filename)
    call delete(g:filename)
  endif

  unlet g:filename

Given foobar (Some imaginary filetype):
  foo
  bar
  baz

Execute(Running linters without 'lint_file' should run only buffer linters):
  call ale#Queue(0)
  call ale#test#FlushJobs()

  AssertEqual [
  \ {
  \   'lnum': 1,
  \   'col': 1,
  \   'text': 'buffer error',
  \   'type': 'E',
  \ },
  \ {
  \   'lnum': 2,
  \   'col': 1,
  \   'text': 'buffer warning',
  \   'type': 'W',
  \ },
  \], GetSimplerLoclist()

Execute(Running linters with 'lint_file' should run all linters):
  Assert filereadable(expand('%:p')), 'The file was not readable'

  call ale#Queue(0, 'lint_file')
  call ale#test#FlushJobs()

  AssertEqual [
  \ {
  \   'lnum': 1,
  \   'col': 1,
  \   'text': 'buffer error',
  \   'type': 'E',
  \ },
  \ {
  \   'lnum': 1,
  \   'col': 3,
  \   'text': 'file warning',
  \   'type': 'W',
  \ },
  \ {
  \   'lnum': 2,
  \   'col': 1,
  \   'text': 'buffer warning',
  \   'type': 'W',
  \ },
  \ {
  \   'lnum': 2,
  \   'col': 3,
  \   'text': 'file error',
  \   'type': 'E',
  \ },
  \], GetSimplerLoclist()

Execute(Linter errors from files should be kept):
  Assert filereadable(expand('%:p')), 'The file was not readable'

  call ale#Queue(0, 'lint_file')
  call ale#test#FlushJobs()

  " Change the results for the buffer callback.
  let g:buffer_result = [
  \ {
  \   'lnum': 1,
  \   'col': 1,
  \   'text': 'new buffer error',
  \   'type': 'E',
  \ },
  \]

  call ale#Queue(0)
  call ale#test#FlushJobs()

  AssertEqual [
  \ {
  \   'lnum': 1,
  \   'col': 1,
  \   'text': 'new buffer error',
  \   'type': 'E',
  \ },
  \ {
  \   'lnum': 1,
  \   'col': 3,
  \   'text': 'file warning',
  \   'type': 'W',
  \ },
  \ {
  \   'lnum': 2,
  \   'col': 3,
  \   'text': 'file error',
  \   'type': 'E',
  \ },
  \], GetSimplerLoclist()

Execute(Linter errors from files should be kept when no other linters are run):
  let g:ale_linters = {'foobar': ['lint_file_linter']}
  Assert filereadable(expand('%:p')), 'The file was not readable'

  call ale#Queue(0, 'lint_file')
  call ale#test#FlushJobs()

  AssertEqual [
  \ {
  \   'lnum': 1,
  \   'col': 3,
  \   'text': 'file warning',
  \   'type': 'W',
  \ },
  \ {
  \   'lnum': 2,
  \   'col': 3,
  \   'text': 'file error',
  \   'type': 'E',
  \ },
  \], GetSimplerLoclist()

  call ale#Queue(0)

  AssertEqual [
  \ {
  \   'lnum': 1,
  \   'col': 3,
  \   'text': 'file warning',
  \   'type': 'W',
  \ },
  \ {
  \   'lnum': 2,
  \   'col': 3,
  \   'text': 'file error',
  \   'type': 'E',
  \ },
  \], GetSimplerLoclist()

Execute(The Save event should respect the buffer number):
  let g:ale_linters = {'foobar': ['lint_file_linter']}
  Assert filereadable(expand('%:p')), 'The file was not readable'

  call ale#events#SaveEvent(bufnr('') + 1)
  call ale#test#FlushJobs()

  " We shouldn't get any prblems yet.
  AssertEqual [], GetSimplerLoclist()

  call ale#events#SaveEvent(bufnr(''))
  call ale#test#FlushJobs()

  " We should get them now we used the right buffer number.
  AssertEqual [
  \ {
  \   'lnum': 1,
  \   'col': 3,
  \   'text': 'file warning',
  \   'type': 'W',
  \ },
  \ {
  \   'lnum': 2,
  \   'col': 3,
  \   'text': 'file error',
  \   'type': 'E',
  \ },
  \], GetSimplerLoclist()

Execute(The Save event should set b:ale_save_event_fired to 1):
  let g:ale_lint_on_save = 1
  let b:ale_enabled = 1

  call ale#linter#Reset()
  call ale#events#SaveEvent(bufnr(''))
  call ale#test#FlushJobs()

  " This flag needs to be set so windows can be opened, etc.
  AssertEqual 1, b:ale_save_event_fired

Execute(b:ale_save_event_fired should be set to 0 when results are set):
  let b:ale_save_event_fired = 1

  call ale#engine#SetResults(bufnr(''), [])
  call ale#test#FlushJobs()

  AssertEqual 0, b:ale_save_event_fired

Execute(lint_file linters should stay running after checking without them):
  let g:ale_run_synchronously = 0

  " Run all linters, then just the buffer linters.
  call ale#Queue(0, 'lint_file')
  call ale#Queue(0)

  " The lint_file linter should still be running.
  AssertEqual
  \ ['lint_file_linter', 'buffer_linter'],
  \ map(copy(g:ale_buffer_info[bufnr('')].active_linter_list), 'v:val.name')
  " We should have 1 job for each linter.
  AssertEqual
  \ 2,
  \ len(keys(get(get(ale#command#GetData(), bufnr(''), {}), 'jobs', {})))

  call ale#test#WaitForJobs(2000)

Execute(The save event should not lint the buffer when ALE is disabled):
  let g:ale_enabled = 0
  call ale#events#SaveEvent(bufnr(''))
  call ale#test#FlushJobs()

  AssertEqual [], GetSimplerLoclist()
  AssertEqual 0, b:ale_save_event_fired