neovim/test/old/testdir/test_getcwd.vim

func GetCwdInfo(win, tab)
  let tab_changed = 0
  let mod = ":t"
  if a:tab > 0 && a:tab != tabpagenr()
    let tab_changed = 1
    exec "tabnext " . a:tab
  endif
  let bufname = fnamemodify(bufname(winbufnr(a:win)), mod)
  if tab_changed
    tabprevious
  endif
  if a:win == 0 && a:tab == 0
    let dirname = fnamemodify(getcwd(), mod)
    let lflag = haslocaldir()
  elseif a:tab == 0
    let dirname = fnamemodify(getcwd(a:win), mod)
    let lflag = haslocaldir(a:win)
  else
    let dirname = fnamemodify(getcwd(a:win, a:tab), mod)
    let lflag = a:win->haslocaldir(a:tab)
  endif
  return bufname . ' ' . dirname . ' ' . lflag
endfunc

" Do all test in a separate window to avoid E211 when we recursively
" delete the Xtopdir directory during cleanup
func SetUp()
  set visualbell
  set nocp viminfo+=nviminfo

  " On windows a swapfile in Xtopdir prevents it from being cleaned up.
  set noswapfile

  " On windows a stale "Xtopdir" directory may exist, remove it so that
  " we start from a clean state.
  call delete("Xtopdir", "rf")
  new
  eval 'Xtopdir'->mkdir()
  cd Xtopdir
  let g:topdir = getcwd()
  call mkdir('Xdir1')
  call mkdir('Xdir2')
  call mkdir('Xdir3')
endfunction

let g:cwd=getcwd()
function TearDown()
  q
  call chdir(g:cwd)
  call delete("Xtopdir", "rf")
endfunction

function Test_GetCwd()
  new a
  new b
  new c
  3wincmd w
  lcd Xdir1
  call assert_equal("a Xdir1 1", GetCwdInfo(0, 0))
  call assert_equal(g:topdir, getcwd(-1))
  wincmd W
  call assert_equal("b Xtopdir 0", GetCwdInfo(0, 0))
  call assert_equal(g:topdir, getcwd(-1))
  wincmd W
  lcd Xdir3
  call assert_equal("c Xdir3 1", GetCwdInfo(0, 0))
  call assert_equal("a Xdir1 1", GetCwdInfo(bufwinnr("a"), 0))
  call assert_equal("b Xtopdir 0", GetCwdInfo(bufwinnr("b"), 0))
  call assert_equal("c Xdir3 1", GetCwdInfo(bufwinnr("c"), 0))
  call assert_equal(g:topdir, getcwd(-1))
  wincmd W
  call assert_equal("a Xdir1 1", GetCwdInfo(bufwinnr("a"), tabpagenr()))
  call assert_equal("b Xtopdir 0", GetCwdInfo(bufwinnr("b"), tabpagenr()))
  call assert_equal("c Xdir3 1", GetCwdInfo(bufwinnr("c"), tabpagenr()))
  call assert_equal(g:topdir, getcwd(-1))

  tabnew x
  new y
  new z
  3wincmd w
  call assert_equal("x Xtopdir 0", GetCwdInfo(0, 0))
  call assert_equal(g:topdir, getcwd(-1))
  wincmd W
  lcd Xdir2
  call assert_equal("y Xdir2 1", GetCwdInfo(0, 0))
  call assert_equal(g:topdir, getcwd(-1))
  wincmd W
  lcd Xdir3
  call assert_equal("z Xdir3 1", GetCwdInfo(0, 0))
  call assert_equal("x Xtopdir 0", GetCwdInfo(bufwinnr("x"), 0))
  call assert_equal("y Xdir2 1", GetCwdInfo(bufwinnr("y"), 0))
  call assert_equal("z Xdir3 1", GetCwdInfo(bufwinnr("z"), 0))
  call assert_equal(g:topdir, getcwd(-1))
  let tp_nr = tabpagenr()
  tabrewind
  call assert_equal("x Xtopdir 0", GetCwdInfo(3, tp_nr))
  call assert_equal("y Xdir2 1", GetCwdInfo(2, tp_nr))
  call assert_equal("z Xdir3 1", GetCwdInfo(1, tp_nr))
  call assert_equal(g:topdir, getcwd(-1))
endfunc

function Test_GetCwd_lcd_shellslash()
  new
  let root = fnamemodify('/', ':p')
  exe 'lcd '.root
  let cwd = getcwd()
  if !exists('+shellslash') || &shellslash
    call assert_equal(cwd[-1:], '/')
  else
    call assert_equal(cwd[-1:], '\')
  endif
endfunc