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

  let g:old_filename = expand('%:p')
  let g:Callback = 0
  let g:message = []
  let g:expr_list = []

  runtime autoload/ale/definition.vim
  runtime autoload/ale/linter.vim
  runtime autoload/ale/lsp.vim

  function! ale#linter#StartLSP(buffer, linter, callback) abort
    let g:Callback = a:callback

    return {
    \ 'connection_id': 347,
    \ 'project_root': '/foo/bar',
    \}
  endfunction

  function! ale#lsp#Send(conn_id, message, root) abort
    let g:message = a:message

    return 42
  endfunction

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

After:
  call ale#test#RestoreDirectory()
  call ale#linter#Reset()

  unlet! g:old_filename
  unlet! g:Callback
  unlet! g:message
  unlet! g:expr_list

  runtime autoload/ale/definition.vim
  runtime autoload/ale/linter.vim
  runtime autoload/ale/lsp.vim

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

Execute(Failed definition responses should be handled correctly):
  call ale#definition#SetMap({3: {'open_in_tab': 0}})
  call ale#definition#HandleTSServerResponse(
  \ 1,
  \ {'command': 'definition', 'request_seq': 3}
  \)
  AssertEqual {}, ale#definition#GetMap()

Given typescript(Some typescript file):
  foo
  somelongerline
  bazxyzxyzxyz

Execute(Other files should be jumped to for definition responses):
  call ale#definition#SetMap({3: {'open_in_tab': 0}})
  call ale#definition#HandleTSServerResponse(
  \ 1,
  \ {
  \   'command': 'definition',
  \   'request_seq': 3,
  \   'success': v:true,
  \   'body': [
  \     {
  \       'file': g:dir . '/completion_dummy_file',
  \       'start': {'line': 3, 'offset': 7},
  \     },
  \   ],
  \ }
  \)

  AssertEqual
  \ [
  \   'edit ' . fnameescape(g:dir . '/completion_dummy_file'),
  \ ],
  \ g:expr_list
  AssertEqual [3, 7], getpos('.')[1:2]
  AssertEqual {}, ale#definition#GetMap()

Execute(Other files should be jumped to for definition responses in tabs too):
  call ale#definition#SetMap({3: {'open_in_tab': 1}})
  call ale#definition#HandleTSServerResponse(
  \ 1,
  \ {
  \   'command': 'definition',
  \   'request_seq': 3,
  \   'success': v:true,
  \   'body': [
  \     {
  \       'file': g:dir . '/completion_dummy_file',
  \       'start': {'line': 3, 'offset': 7},
  \     },
  \   ],
  \ }
  \)

  AssertEqual
  \ [
  \   'tabedit ' . fnameescape(g:dir . '/completion_dummy_file'),
  \ ],
  \ g:expr_list
  AssertEqual [3, 7], getpos('.')[1:2]
  AssertEqual {}, ale#definition#GetMap()

Execute(tsserver completion requests should be sent):
  runtime ale_linters/typescript/tsserver.vim
  call setpos('.', [bufnr(''), 2, 5, 0])

  ALEGoToDefinition

  AssertEqual
  \ 'function(''ale#definition#HandleTSServerResponse'')',
  \ string(g:Callback)
  AssertEqual
  \ [0, 'ts@definition', {'file': expand('%:p'), 'line': 2, 'offset': 5}],
  \ g:message
  AssertEqual {'42': {'open_in_tab': 0}}, ale#definition#GetMap()

Execute(tsserver tab completion requests should be sent):
  runtime ale_linters/typescript/tsserver.vim
  call setpos('.', [bufnr(''), 2, 5, 0])

  ALEGoToDefinitionInTab

  AssertEqual
  \ 'function(''ale#definition#HandleTSServerResponse'')',
  \ string(g:Callback)
  AssertEqual
  \ [0, 'ts@definition', {'file': expand('%:p'), 'line': 2, 'offset': 5}],
  \ g:message
  AssertEqual {'42': {'open_in_tab': 1}}, ale#definition#GetMap()