Before:
  call ale#test#SetDirectory('/testplugin/test')
  call ale#test#SetFilename('dummy.txt')

  let g:old_filename = expand('%:p')
  let g:Callback = ''
  let g:expr_list = []
  let g:message_list = []
  let g:handle_code_action_called = 0
  let g:code_actions = []
  let g:options = {}
  let g:capability_checked = ''
  let g:conn_id = v:null
  let g:InitCallback = v:null

  runtime autoload/ale/lsp_linter.vim
  runtime autoload/ale/lsp.vim
  runtime autoload/ale/util.vim
  runtime autoload/ale/organize_imports.vim
  runtime autoload/ale/code_action.vim

  function! ale#lsp_linter#StartLSP(buffer, linter, Callback) abort
    let g:conn_id = ale#lsp#Register('executable', '/foo/bar', {})
    call ale#lsp#MarkDocumentAsOpen(g:conn_id, a:buffer)

    if a:linter.lsp is# 'tsserver'
        call ale#lsp#MarkConnectionAsTsserver(g:conn_id)
    endif

    let l:details = {
    \ 'command': 'foobar',
    \ 'buffer': a:buffer,
    \ 'connection_id': g:conn_id,
    \ 'project_root': '/foo/bar',
    \}

    let g:InitCallback = {-> ale#lsp_linter#OnInit(a:linter, l:details, a:Callback)}
  endfunction

  function! ale#lsp#HasCapability(conn_id, capability) abort
    let g:capability_checked = a:capability

    return 1
  endfunction

  function! ale#lsp#RegisterCallback(conn_id, callback) abort
    let g:Callback = a:callback
  endfunction

  function! ale#lsp#Send(conn_id, message) abort
    call add(g:message_list, a:message)

    return 42
  endfunction

  function! ale#util#Execute(expr) abort
    call add(g:expr_list, a:expr)
  endfunction

  function! ale#code_action#HandleCodeAction(code_action, options) abort
    let g:handle_code_action_called = 1
    AssertEqual !&hidden, get(a:options, 'should_save')
    call add(g:code_actions, a:code_action)
  endfunction

After:
  if g:conn_id isnot v:null
    call ale#lsp#RemoveConnectionWithID(g:conn_id)
  endif

  call ale#references#SetMap({})
  call ale#test#RestoreDirectory()
  call ale#linter#Reset()

  unlet! g:capability_checked
  unlet! g:InitCallback
  unlet! g:old_filename
  unlet! g:conn_id
  unlet! g:Callback
  unlet! g:message_list
  unlet! g:expr_list
  unlet! b:ale_linters
  unlet! g:options
  unlet! g:code_actions
  unlet! g:handle_code_action_called

  runtime autoload/ale/lsp_linter.vim
  runtime autoload/ale/lsp.vim
  runtime autoload/ale/util.vim
  runtime autoload/ale/organize_imports.vim
  runtime autoload/ale/code_action.vim

Execute(Other messages for the tsserver handler should be ignored):
  call ale#organize_imports#HandleTSServerResponse(1, {'command': 'foo'})
  AssertEqual g:handle_code_action_called, 0

Execute(Failed organizeImports responses should be handled correctly):
  call ale#organize_imports#HandleTSServerResponse(
  \ 1,
  \ {'command': 'organizeImports', 'request_seq': 3}
  \)
  AssertEqual g:handle_code_action_called, 0

Execute(Code actions from tsserver should be handled):
  call ale#organize_imports#HandleTSServerResponse(1, {
  \ 'command': 'organizeImports',
  \ 'request_seq': 3,
  \ 'success': v:true,
  \ 'body': [],
  \})
  AssertEqual g:handle_code_action_called, 1
  AssertEqual [{
  \   'description': 'Organize Imports',
  \   'changes': [],
  \}], g:code_actions

Given typescript(Some typescript file):
  foo
  somelongerline
  bazxyzxyzxyz

Execute(tsserver organize imports requests should be sent):
  call ale#linter#Reset()
  runtime ale_linters/typescript/tsserver.vim

  ALEOrganizeImports

  " We shouldn't register the callback yet.
  AssertEqual '''''', string(g:Callback)

  AssertEqual type(function('type')), type(g:InitCallback)
  call g:InitCallback()

  AssertEqual
  \ 'function(''ale#organize_imports#HandleTSServerResponse'')',
  \ string(g:Callback)

  AssertEqual
  \ [
  \   ale#lsp#tsserver_message#Change(bufnr('')),
  \   [0, 'ts@organizeImports', {
  \     'scope': {
  \         'type': 'file',
  \         'args': {
  \             'file': expand('%:p'),
  \         },
  \     },
  \   }]
  \ ],
  \ g:message_list

Given python(Some Python file):
  foo
  somelongerline
  bazxyzxyzxyz

Execute(Should result in error message):
  call ale#linter#Reset()
  runtime ale_linters/python/pylsp.vim
  let b:ale_linters = ['pylsp']

  ALEOrganizeImports

  " We shouldn't register the callback yet.
  AssertEqual '''''', string(g:Callback)

  AssertEqual type(function('type')), type(g:InitCallback)
  call g:InitCallback()

  AssertEqual [
  \  'echom ''OrganizeImports currently only works with tsserver''',
  \], g:expr_list