view src/testdir/test_window_cmd.vim @ 33278:b5ed566262d3 v9.0.1906

patch 9.0.1906: Vim9: Interfaces should not support class methods and variables Commit: https://github.com/vim/vim/commit/92d9ee5f4ca0d2de04c39afbafc7609da43fb2e9 Author: Yegappan Lakshmanan <yegappan@yahoo.com> Date: Sun Sep 17 17:03:19 2023 +0200 patch 9.0.1906: Vim9: Interfaces should not support class methods and variables Problem: Vim9: Interfaces should not support class methods and variables Solution: Make sure interface follow the interface specification Vim9 interface changes to follow the new interface specification: 1) An interface can have only read-only and read-write instance variables. 2) An interface can have only public instance methods. 3) An interface cannot have class variables and class methods. 4) An interface cannot have private instance variables and private instance methods. 5) A interface can extend another interface using "extends". The sub-interface gets all the variables and methods in the super interface. That means: - Interfaces should not support class methods and variables. - Adjust error numbers and add additional tests. - Interface methods can be defined in one of the super classes. - Interface variables can be defined in one of the super classes. and instance variables can be repeated in sub interfaces. - Check the class variable types with the type in interface. closes: #13100 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
author Christian Brabandt <cb@256bit.org>
date Sun, 17 Sep 2023 17:15:06 +0200
parents 41482b74f548
children 808cf14bad77
line wrap: on
line source

" Tests for window cmd (:wincmd, :split, :vsplit, :resize and etc...)

source check.vim
source screendump.vim

func Test_window_cmd_ls0_with_split()
  set ls=0
  set splitbelow
  split
  quit
  call assert_equal(0, &lines - &cmdheight - winheight(0))
  new | only!
  "
  set splitbelow&vim
  botright split
  quit
  call assert_equal(0, &lines - &cmdheight - winheight(0))
  new | only!
  set ls&vim
endfunc

func Test_window_cmd_ls0_split_scrolling()
  CheckRunVimInTerminal

  let lines =<< trim END
    set laststatus=0
    call setline(1, range(1, 100))
    normal! G
  END
  call writefile(lines, 'XTestLs0SplitScrolling', 'D')
  let buf = RunVimInTerminal('-S XTestLs0SplitScrolling', #{rows: 10})

  call term_sendkeys(buf, ":botright split\<CR>")
  call WaitForAssert({-> assert_match('Bot$', term_getline(buf, 5))})
  call assert_equal('100', term_getline(buf, 4))

  call StopVimInTerminal(buf)
endfunc

func Test_window_cmd_cmdwin_with_vsp()
  let efmt = 'Expected 0 but got %d (in ls=%d, %s window)'
  for v in range(0, 2)
    exec "set ls=" . v
    vsplit
    call feedkeys("q:\<CR>")
    let ac = &lines - (&cmdheight + winheight(0) + !!v)
    let emsg = printf(efmt, ac, v, 'left')
    call assert_equal(0, ac, emsg)
    wincmd w
    let ac = &lines - (&cmdheight + winheight(0) + !!v)
    let emsg = printf(efmt, ac, v, 'right')
    call assert_equal(0, ac, emsg)
    new | only!
  endfor
  set ls&vim
endfunc

func Test_cmdheight_not_changed()
  set cmdheight=2
  set winminheight=0
  augroup Maximize
    autocmd WinEnter * wincmd _
  augroup END
  split
  tabnew
  tabfirst
  call assert_equal(2, &cmdheight)

  tabonly!
  only
  set winminwidth& cmdheight&
  augroup Maximize
    au!
  augroup END
  augroup! Maximize
endfunc

" Test for jumping to windows
func Test_window_jump()
  new
  " jumping to a window with a count greater than the max windows
  exe "normal 4\<C-W>w"
  call assert_equal(2, winnr())
  only
endfunc

func Test_window_cmd_wincmd_gf()
  let fname = 'test_gf.txt'
  let swp_fname = '.' . fname . '.swp'
  call writefile([], fname, 'D')
  call writefile([], swp_fname, 'D')
  function s:swap_exists()
    let v:swapchoice = s:swap_choice
  endfunc
  " Remove the catch-all that runtest.vim adds
  au! SwapExists
  augroup test_window_cmd_wincmd_gf
    autocmd!
    exec "autocmd SwapExists " . fname . " call s:swap_exists()"
  augroup END

  call setline(1, fname)
  " (E)dit anyway
  let s:swap_choice = 'e'
  wincmd gf
  call assert_equal(2, tabpagenr())
  call assert_equal(fname, bufname("%"))
  quit!

  " (Q)uit
  let s:swap_choice = 'q'
  wincmd gf
  call assert_equal(1, tabpagenr())
  call assert_notequal(fname, bufname("%"))
  new | only!

  augroup! test_window_cmd_wincmd_gf
endfunc

func Test_window_quit()
  e Xa
  split Xb
  call assert_equal(2, '$'->winnr())
  call assert_equal('Xb', bufname(winbufnr(1)))
  call assert_equal('Xa', bufname(winbufnr(2)))

  wincmd q
  call assert_equal(1, winnr('$'))
  call assert_equal('Xa', bufname(winbufnr(1)))

  bw Xa Xb
endfunc

func Test_window_horizontal_split()
  call assert_equal(1, winnr('$'))
  3wincmd s
  call assert_equal(2, winnr('$'))
  call assert_equal(3, winheight(0))
  call assert_equal(winwidth(1), 2->winwidth())

  call assert_fails('botright topleft wincmd s', 'E442:')
  bw
endfunc

func Test_window_vertical_split()
  call assert_equal(1, winnr('$'))
  3wincmd v
  call assert_equal(2, winnr('$'))
  call assert_equal(3, winwidth(0))
  call assert_equal(winheight(1), winheight(2))

  call assert_fails('botright topleft wincmd v', 'E442:')
  bw
endfunc

" Test the ":wincmd ^" and "<C-W>^" commands.
func Test_window_split_edit_alternate()
  " Test for failure when the alternate buffer/file no longer exists.
  edit Xfoo | %bw
  call assert_fails(':wincmd ^', 'E23:')

  " Test for the expected behavior when we have two named buffers.
  edit Xfoo | edit Xbar
  wincmd ^
  call assert_equal('Xfoo', bufname(winbufnr(1)))
  call assert_equal('Xbar', bufname(winbufnr(2)))
  only

  " Test for the expected behavior when the alternate buffer is not named.
  enew | let l:nr1 = bufnr('%')
  edit Xfoo | let l:nr2 = bufnr('%')
  wincmd ^
  call assert_equal(l:nr1, winbufnr(1))
  call assert_equal(l:nr2, winbufnr(2))
  only

  " FIXME: this currently fails on AppVeyor, but passes locally
  if !has('win32')
    " Test the Normal mode command.
    call feedkeys("\<C-W>\<C-^>", 'tx')
    call assert_equal(l:nr2, winbufnr(1))
    call assert_equal(l:nr1, winbufnr(2))
  endif

  %bw!
endfunc

" Test the ":[count]wincmd ^" and "[count]<C-W>^" commands.
func Test_window_split_edit_bufnr()
  %bwipeout
  let l:nr = bufnr('%') + 1
  call assert_fails(':execute "normal! ' . l:nr . '\<C-W>\<C-^>"', 'E92:')
  call assert_fails(':' . l:nr . 'wincmd ^', 'E16:')
  call assert_fails(':0wincmd ^', 'E16:')

  edit Xfoo | edit Xbar | edit Xbaz
  let l:foo_nr = bufnr('Xfoo')
  let l:bar_nr = bufnr('Xbar')
  let l:baz_nr = bufnr('Xbaz')

  " FIXME: this currently fails on AppVeyor, but passes locally
  if !has('win32')
    call feedkeys(l:foo_nr . "\<C-W>\<C-^>", 'tx')
    call assert_equal('Xfoo', bufname(winbufnr(1)))
    call assert_equal('Xbaz', bufname(winbufnr(2)))
    only

    call feedkeys(l:bar_nr . "\<C-W>\<C-^>", 'tx')
    call assert_equal('Xbar', bufname(winbufnr(1)))
    call assert_equal('Xfoo', bufname(winbufnr(2)))
    only

    execute l:baz_nr . 'wincmd ^'
    call assert_equal('Xbaz', bufname(winbufnr(1)))
    call assert_equal('Xbar', bufname(winbufnr(2)))
  endif

  %bw!
endfunc

func Test_window_split_no_room()
  " N horizontal windows need >= 2*N + 1 lines:
  " - 1 line + 1 status line in each window
  " - 1 Ex command line
  "
  " 2*N + 1 <= &lines
  " N <= (lines - 1)/2
  "
  " Beyond that number of windows, E36: Not enough room is expected.
  let hor_win_count = (&lines - 1)/2
  let hor_split_count = hor_win_count - 1
  for s in range(1, hor_split_count) | split | endfor
  call assert_fails('split', 'E36:')

  " N vertical windows need >= 2*(N - 1) + 1 columns:
  " - 1 column + 1 separator for each window (except last window)
  " - 1 column for the last window which does not have separator
  "
  " 2*(N - 1) + 1 <= &columns
  " 2*N - 1 <= &columns
  " N <= (&columns + 1)/2
  let ver_win_count = (&columns + 1)/2
  let ver_split_count = ver_win_count - 1
  for s in range(1, ver_split_count) | vsplit | endfor
  call assert_fails('vsplit', 'E36:')

  %bw!
endfunc

func Test_window_exchange()
  e Xa

  " Nothing happens with window exchange when there is 1 window
  wincmd x
  call assert_equal(1, winnr('$'))

  split Xb
  split Xc

  call assert_equal('Xc', bufname(winbufnr(1)))
  call assert_equal('Xb', bufname(winbufnr(2)))
  call assert_equal('Xa', bufname(winbufnr(3)))

  " Exchange current window 1 with window 3
  3wincmd x
  call assert_equal('Xa', bufname(winbufnr(1)))
  call assert_equal('Xb', bufname(winbufnr(2)))
  call assert_equal('Xc', bufname(winbufnr(3)))

  " Exchange window with next when at the top window
  wincmd x
  call assert_equal('Xb', bufname(winbufnr(1)))
  call assert_equal('Xa', bufname(winbufnr(2)))
  call assert_equal('Xc', bufname(winbufnr(3)))

  " Exchange window with next when at the middle window
  wincmd j
  wincmd x
  call assert_equal('Xb', bufname(winbufnr(1)))
  call assert_equal('Xc', bufname(winbufnr(2)))
  call assert_equal('Xa', bufname(winbufnr(3)))

  " Exchange window with next when at the bottom window.
  " When there is no next window, it exchanges with the previous window.
  wincmd j
  wincmd x
  call assert_equal('Xb', bufname(winbufnr(1)))
  call assert_equal('Xa', bufname(winbufnr(2)))
  call assert_equal('Xc', bufname(winbufnr(3)))

  bw Xa Xb Xc
endfunc

func Test_window_rotate()
  e Xa
  split Xb
  split Xc
  call assert_equal('Xc', bufname(winbufnr(1)))
  call assert_equal('Xb', bufname(winbufnr(2)))
  call assert_equal('Xa', bufname(winbufnr(3)))

  " Rotate downwards
  wincmd r
  call assert_equal('Xa', bufname(winbufnr(1)))
  call assert_equal('Xc', bufname(winbufnr(2)))
  call assert_equal('Xb', bufname(winbufnr(3)))

  2wincmd r
  call assert_equal('Xc', bufname(winbufnr(1)))
  call assert_equal('Xb', bufname(winbufnr(2)))
  call assert_equal('Xa', bufname(winbufnr(3)))

  " Rotate upwards
  wincmd R
  call assert_equal('Xb', bufname(winbufnr(1)))
  call assert_equal('Xa', bufname(winbufnr(2)))
  call assert_equal('Xc', bufname(winbufnr(3)))

  2wincmd R
  call assert_equal('Xc', bufname(winbufnr(1)))
  call assert_equal('Xb', bufname(winbufnr(2)))
  call assert_equal('Xa', bufname(winbufnr(3)))

  bot vsplit
  call assert_fails('wincmd R', 'E443:')

  bw Xa Xb Xc
endfunc

func Test_window_height()
  e Xa
  split Xb

  let [wh1, wh2] = [winheight(1), winheight(2)]
  " Active window (1) should have the same height or 1 more
  " than the other window.
  call assert_inrange(wh2, wh2 + 1, wh1)

  wincmd -
  call assert_equal(wh1 - 1, winheight(1))
  call assert_equal(wh2 + 1, winheight(2))

  wincmd +
  call assert_equal(wh1, winheight(1))
  call assert_equal(wh2, 2->winheight())

  2wincmd _
  call assert_equal(2, winheight(1))
  call assert_equal(wh1 + wh2 - 2, winheight(2))

  wincmd =
  call assert_equal(wh1, winheight(1))
  call assert_equal(wh2, winheight(2))

  2wincmd _
  set winfixheight
  split Xc
  let [wh1, wh2, wh3] = [winheight(1), winheight(2), winheight(3)]
  call assert_equal(2, winheight(2))
  call assert_inrange(wh3, wh3 + 1, wh1)
  3wincmd +
  call assert_equal(2,       winheight(2))
  call assert_equal(wh1 + 3, winheight(1))
  call assert_equal(wh3 - 3, winheight(3))
  wincmd =
  call assert_equal(2,   winheight(2))
  call assert_equal(wh1, winheight(1))
  call assert_equal(wh3, winheight(3))

  wincmd j
  set winfixheight&

  wincmd =
  let [wh1, wh2, wh3] = [winheight(1), winheight(2), winheight(3)]
  " Current window (2) should have the same height or 1 more
  " than the other windows.
  call assert_inrange(wh1, wh1 + 1, wh2)
  call assert_inrange(wh3, wh3 + 1, wh2)

  bw Xa Xb Xc
endfunc

func Test_wincmd_equal()
  edit Xone
  below split Xtwo
  rightbelow vsplit Xthree
  call assert_equal('Xone', bufname(winbufnr(1)))
  call assert_equal('Xtwo', bufname(winbufnr(2)))
  call assert_equal('Xthree', bufname(winbufnr(3)))

  " Xone and Xtwo should be about the same height
  let [wh1, wh2] = [winheight(1), winheight(2)]
  call assert_inrange(wh1 - 1, wh1 + 1, wh2)
  " Xtwo and Xthree should be about the same width
  let [ww2, ww3] = [winwidth(2), winwidth(3)]
  call assert_inrange(ww2 - 1, ww2 + 1, ww3)

  1wincmd w
  10wincmd _
  2wincmd w
  20wincmd |
  call assert_equal(10, winheight(1))
  call assert_equal(20, winwidth(2))

  " equalizing horizontally doesn't change the heights
  hor wincmd =
  call assert_equal(10, winheight(1))
  let [ww2, ww3] = [winwidth(2), winwidth(3)]
  call assert_inrange(ww2 - 1, ww2 + 1, ww3)

  2wincmd w
  20wincmd |
  call assert_equal(20, winwidth(2))
  " equalizing vertically doesn't change the widths
  vert wincmd =
  call assert_equal(20, winwidth(2))
  let [wh1, wh2] = [winheight(1), winheight(2)]
  call assert_inrange(wh1 - 1, wh1 + 1, wh2)

  bwipe Xone Xtwo Xthree
endfunc

func Test_window_width()
  e Xa
  vsplit Xb

  let [ww1, ww2] = [winwidth(1), winwidth(2)]
  " Active window (1) should have the same width or 1 more
  " than the other window.
  call assert_inrange(ww2, ww2 + 1, ww1)

  wincmd <
  call assert_equal(ww1 - 1, winwidth(1))
  call assert_equal(ww2 + 1, winwidth(2))

  wincmd >
  call assert_equal(ww1, winwidth(1))
  call assert_equal(ww2, winwidth(2))

  2wincmd |
  call assert_equal(2, winwidth(1))
  call assert_equal(ww1 + ww2 - 2, winwidth(2))

  wincmd =
  call assert_equal(ww1, winwidth(1))
  call assert_equal(ww2, winwidth(2))

  2wincmd |
  set winfixwidth
  vsplit Xc
  let [ww1, ww2, ww3] = [winwidth(1), winwidth(2), winwidth(3)]
  call assert_equal(2, winwidth(2))
  call assert_inrange(ww3, ww3 + 1, ww1)
  3wincmd >
  call assert_equal(2,       winwidth(2))
  call assert_equal(ww1 + 3, winwidth(1))
  call assert_equal(ww3 - 3, winwidth(3))
  wincmd =
  call assert_equal(2,   winwidth(2))
  call assert_equal(ww1, winwidth(1))
  call assert_equal(ww3, winwidth(3))

  wincmd l
  set winfixwidth&

  wincmd =
  let [ww1, ww2, ww3] = [winwidth(1), winwidth(2), winwidth(3)]
  " Current window (2) should have the same width or 1 more
  " than the other windows.
  call assert_inrange(ww1, ww1 + 1, ww2)
  call assert_inrange(ww3, ww3 + 1, ww2)

  " when the current window width is less than the new 'winwidth', the current
  " window width should be increased.
  enew | only
  split
  10vnew
  set winwidth=15
  call assert_equal(15, winwidth(0))

  %bw!
endfunc

func Test_equalalways_on_close()
  set equalalways
  vsplit
  windo split
  split
  wincmd J
  " now we have a frame top-left with two windows, a frame top-right with two
  " windows and a frame at the bottom, full-width.
  let height_1 = winheight(1)
  let height_2 = winheight(2)
  let height_3 = winheight(3)
  let height_4 = winheight(4)
  " closing the bottom window causes all windows to be resized.
  close
  call assert_notequal(height_1, winheight(1))
  call assert_notequal(height_2, winheight(2))
  call assert_notequal(height_3, winheight(3))
  call assert_notequal(height_4, winheight(4))
  call assert_equal(winheight(1), winheight(3))
  call assert_equal(winheight(2), winheight(4))

  1wincmd w
  split
  4wincmd w
  resize + 5
  " left column has three windows, equalized heights.
  " right column has two windows, top one a bit higher
  let height_1 = winheight(1)
  let height_2 = winheight(2)
  let height_4 = winheight(4)
  let height_5 = winheight(5)
  3wincmd w
  " closing window in left column equalizes heights in left column but not in
  " the right column
  close
  call assert_notequal(height_1, winheight(1))
  call assert_notequal(height_2, winheight(2))
  call assert_equal(height_4, winheight(3))
  call assert_equal(height_5, winheight(4))

  only
  set equalalways&
endfunc

func Test_win_screenpos()
  CheckFeature quickfix

  call assert_equal(1, winnr('$'))
  split
  vsplit
  10wincmd _
  30wincmd |
  call assert_equal([1, 1], win_screenpos(1))
  call assert_equal([1, 32], win_screenpos(2))
  call assert_equal([12, 1], win_screenpos(3))
  call assert_equal([0, 0], win_screenpos(4))
  call assert_fails('let l = win_screenpos([])', 'E745:')
  only
endfunc

func Test_window_jump_tag()
  CheckFeature quickfix

  help
  /iccf
  call assert_match('^|iccf|',  getline('.'))
  call assert_equal(2, winnr('$'))
  2wincmd }
  call assert_equal(3, winnr('$'))
  call assert_match('^|iccf|',  getline('.'))
  wincmd k
  call assert_match('\*iccf\*',  getline('.'))
  call assert_equal(2, winheight(0))

  wincmd z
  set previewheight=4
  help
  /bugs
  wincmd }
  wincmd k
  call assert_match('\*bugs\*',  getline('.'))
  call assert_equal(4, winheight(0))
  set previewheight&

  %bw!
endfunc

func Test_window_newtab()
  e Xa

  call assert_equal(1, tabpagenr('$'))
  call assert_equal("\nAlready only one window", execute('wincmd T'))

  split Xb
  split Xc

  wincmd T
  call assert_equal(2, tabpagenr('$'))
  call assert_equal(['Xb', 'Xa'], map(tabpagebuflist(1), 'bufname(v:val)'))
  call assert_equal(['Xc'      ], map(2->tabpagebuflist(), 'bufname(v:val)'))
  call assert_equal(['Xc'      ], map(tabpagebuflist(), 'bufname(v:val)'))

  %bw!
endfunc

func Test_next_split_all()
  " This was causing an illegal memory access.
  n x
  norm axxx
  split
  split
  s/x
  s/x
  all
  bwipe!
endfunc

" Tests for adjusting window and contents
func GetScreenStr(row)
   let str = ""
   for c in range(1,3)
       let str .= nr2char(screenchar(a:row, c))
   endfor
   return str
endfunc

func Test_window_contents()
  enew! | only | new
  call setline(1, range(1,256))

  exe "norm! \<C-W>t\<C-W>=1Gzt\<C-W>w\<C-W>+"
  redraw
  let s3 = GetScreenStr(1)
  wincmd p
  call assert_equal(1, line("w0"))
  call assert_equal('1  ', s3)

  exe "norm! \<C-W>t\<C-W>=50Gzt\<C-W>w\<C-W>+"
  redraw
  let s3 = GetScreenStr(1)
  wincmd p
  call assert_equal(50, line("w0"))
  call assert_equal('50 ', s3)

  exe "norm! \<C-W>t\<C-W>=59Gzt\<C-W>w\<C-W>+"
  redraw
  let s3 = GetScreenStr(1)
  wincmd p
  call assert_equal(59, line("w0"))
  call assert_equal('59 ', s3)

  %d
  call setline(1, ['one', 'two', 'three'])
  call assert_equal(1, line('w0'))
  call assert_equal(3, line('w$'))

  bwipeout!
  call test_garbagecollect_now()
endfunc

func Test_window_colon_command()
  " This was reading invalid memory.
  exe "norm! v\<C-W>:\<C-U>echo v:version"
endfunc

func Test_access_freed_mem()
  call assert_equal(&columns, winwidth(0))
  " This was accessing freed memory (but with what events?)
  au BufEnter,BufLeave,WinEnter,WinLeave 0 vs xxx
  arg 0
  argadd
  call assert_fails("all", "E242:")
  au!
  bwipe xxx
  call assert_equal(&columns, winwidth(0))
endfunc

func Test_insert_cleared_on_switch_to_term()
  CheckFeature terminal

  set showmode
  terminal
  wincmd p

  call feedkeys("i\<C-O>", 'ntx')
  redraw

  " The "-- (insert) --" indicator should be visible.
  let chars = map(range(1, &columns), 'nr2char(screenchar(&lines, v:val))')
  let str = trim(join(chars, ''))
  call assert_equal('-- (insert) --', str)

  call feedkeys("\<C-W>p", 'ntx')
  redraw

  " The "-- (insert) --" indicator should have been cleared.
  let chars = map(range(1, &columns), 'nr2char(screenchar(&lines, v:val))')
  let str = trim(join(chars, ''))
  call assert_equal('', str)

  set showmode&
  %bw!
endfunc

func Test_visual_cleared_after_window_split()
  new | only!
  let smd_save = &showmode
  set showmode
  let ls_save = &laststatus
  set laststatus=1
  call setline(1, ['a', 'b', 'c', 'd', ''])
  norm! G
  exe "norm! kkvk"
  redraw
  exe "norm! \<C-W>v"
  redraw
  " check if '-- VISUAL --' disappeared from command line
  let columns = range(1, &columns)
  let cmdlinechars = map(columns, 'nr2char(screenchar(&lines, v:val))')
  let cmdline = join(cmdlinechars, '')
  let cmdline_ltrim = substitute(cmdline, '^\s*', "", "")
  let mode_shown = substitute(cmdline_ltrim, '\s*$', "", "")
  call assert_equal('', mode_shown)
  let &showmode = smd_save
  let &laststatus = ls_save
  bwipe!
endfunc

func Test_winrestcmd()
  2split
  3vsplit
  let restcmd = winrestcmd()
  call assert_equal(2, winheight(0))
  call assert_equal(3, winwidth(0))
  wincmd =
  call assert_notequal(2, winheight(0))
  call assert_notequal(3, winwidth(0))
  exe restcmd
  call assert_equal(2, winheight(0))
  call assert_equal(3, winwidth(0))
  only

  wincmd v
  wincmd s
  wincmd v
  redraw
  let restcmd = winrestcmd()
  wincmd _
  wincmd |
  exe restcmd
  redraw
  call assert_equal(restcmd, winrestcmd())

  only
endfunc

func Fun_RenewFile()
  " Need to wait a bit for the timestamp to be older.
  let old_ftime = getftime("tmp.txt")
  while getftime("tmp.txt") == old_ftime
    sleep 100m
    silent execute '!echo "1" > tmp.txt'
  endwhile
  sp
  wincmd p
  edit! tmp.txt
endfunc

func Test_window_prevwin()
  " Can we make this work on MS-Windows?
  CheckUnix

  set hidden autoread
  call writefile(['2'], 'tmp.txt', 'D')
  new tmp.txt
  q
  call Fun_RenewFile()
  call assert_equal(2, winnr())
  wincmd p
  call assert_equal(1, winnr())
  wincmd p
  q
  call Fun_RenewFile()
  call assert_equal(2, winnr())
  wincmd p
  call assert_equal(1, winnr())
  wincmd p
  " reset
  q
  set hidden&vim autoread&vim
  delfunc Fun_RenewFile
endfunc

func Test_relative_cursor_position_in_one_line_window()
  new
  only
  call setline(1, range(1, 10000))
  normal 50%
  let lnum = getcurpos()[1]
  split
  split
  " make third window take as many lines as possible, other windows will
  " become one line
  3wincmd w
  for i in range(1, &lines - 6)
    wincmd +
    redraw!
  endfor

  " first and second window should show cursor line
  let wininfo = getwininfo()
  call assert_equal(lnum, wininfo[0].topline)
  call assert_equal(lnum, wininfo[1].topline)

  only!
  bwipe!
  call assert_fails('call winrestview(test_null_dict())', 'E1297:')
endfunc

func Test_relative_cursor_position_after_move_and_resize()
  let so_save = &so
  set so=0
  enew
  call setline(1, range(1, 10000))
  normal 50%
  split
  1wincmd w
  " Move cursor to first line in window
  normal H
  redraw!
  " Reduce window height to two lines
  let height = winheight(0)
  while winheight(0) > 2
    wincmd -
    redraw!
  endwhile
  " move cursor to second/last line in window
  normal j
  " restore previous height
  while winheight(0) < height
    wincmd +
    redraw!
  endwhile
  " make window two lines again
  while winheight(0) > 2
    wincmd -
    redraw!
  endwhile

  " cursor should be at bottom line
  let info = getwininfo(win_getid())[0]
  call assert_equal(info.topline + 1, getcurpos()[1])

  only!
  bwipe!
  let &so = so_save
endfunc

func Test_relative_cursor_position_after_resize()
  let so_save = &so
  set so=0
  enew
  call setline(1, range(1, 10000))
  normal 50%
  split
  1wincmd w
  let winid1 = win_getid()
  let info = getwininfo(winid1)[0]
  " Move cursor to second line in window
  exe "normal " . (info.topline + 1) . "G"
  redraw!
  let lnum = getcurpos()[1]

  " Make the window only two lines high, cursor should end up in top line
  2wincmd w
  exe (info.height - 2) . "wincmd +"
  redraw!
  let info = getwininfo(winid1)[0]
  call assert_equal(lnum, info.topline)

  only!
  bwipe!
  let &so = so_save
endfunc

func Test_relative_cursor_second_line_after_resize()
  let so_save = &so
  set so=0
  enew
  call setline(1, range(1, 10000))
  normal 50%
  split
  1wincmd w
  let winid1 = win_getid()
  let info = getwininfo(winid1)[0]

  " Make the window only two lines high
  2wincmd _

  " Move cursor to second line in window
  normal H
  normal j

  " Make window size bigger, then back to 2 lines
  for i in range(1, 10)
    wincmd +
    redraw!
  endfor
  for i in range(1, 10)
    wincmd -
    redraw!
  endfor

  " cursor should end up in bottom line
  let info = getwininfo(winid1)[0]
  call assert_equal(info.topline + 1, getcurpos()[1])

  only!
  bwipe!
  let &so = so_save
endfunc

func Test_split_noscroll()
  let so_save = &so
  enew
  call setline(1, range(1, 8))
  normal 100%
  split

  1wincmd w
  let winid1 = win_getid()
  let info1 = getwininfo(winid1)[0]

  2wincmd w
  let winid2 = win_getid()
  let info2 = getwininfo(winid2)[0]

  call assert_equal(1, info1.topline)
  call assert_equal(1, info2.topline)

  " window that fits all lines by itself, but not when split: closing other
  " window should restore fraction.
  only!
  call setline(1, range(1, &lines - 10))
  exe &lines / 4
  let winid1 = win_getid()
  let info1 = getwininfo(winid1)[0]
  call assert_equal(1, info1.topline)
  new
  redraw
  close
  let info1 = getwininfo(winid1)[0]
  call assert_equal(1, info1.topline)

  bwipe!
  let &so = so_save
endfunc

" Tests for the winnr() function
func Test_winnr()
  only | tabonly
  call assert_equal(1, winnr('j'))
  call assert_equal(1, winnr('k'))
  call assert_equal(1, winnr('h'))
  call assert_equal(1, winnr('l'))

  " create a set of horizontally and vertically split windows
  leftabove new | wincmd p
  leftabove new | wincmd p
  rightbelow new | wincmd p
  rightbelow new | wincmd p
  leftabove vnew | wincmd p
  leftabove vnew | wincmd p
  rightbelow vnew | wincmd p
  rightbelow vnew | wincmd p

  call assert_equal(8, winnr('j'))
  call assert_equal(2, winnr('k'))
  call assert_equal(4, winnr('h'))
  call assert_equal(6, winnr('l'))
  call assert_equal(9, winnr('2j'))
  call assert_equal(1, winnr('2k'))
  call assert_equal(3, winnr('2h'))
  call assert_equal(7, winnr('2l'))

  " Error cases
  call assert_fails("echo winnr('0.2k')", 'E15:')
  call assert_equal(2, winnr('-2k'))
  call assert_fails("echo winnr('-2xj')", 'E15:')
  call assert_fails("echo winnr('j2j')", 'E15:')
  call assert_fails("echo winnr('ll')", 'E15:')
  call assert_fails("echo winnr('5')", 'E15:')
  call assert_equal(4, winnr('0h'))
  call assert_fails("let w = winnr([])", 'E730:')
  call assert_equal('unknown', win_gettype(-1))
  call assert_equal(-1, winheight(-1))
  call assert_equal(-1, winwidth(-1))

  tabnew
  call assert_equal(8, tabpagewinnr(1, 'j'))
  call assert_equal(2, 1->tabpagewinnr('k'))
  call assert_equal(4, tabpagewinnr(1, 'h'))
  call assert_equal(6, tabpagewinnr(1, 'l'))

  only | tabonly
endfunc

func Test_winrestview()
  split runtest.vim
  normal 50%
  let view = winsaveview()
  close
  split runtest.vim
  eval view->winrestview()
  call assert_equal(view, winsaveview())

  bwipe!
  call assert_fails('call winrestview(test_null_dict())', 'E1297:')
endfunc

func Test_win_splitmove()
  CheckFeature quickfix

  edit a
  leftabove split b
  leftabove vsplit c
  leftabove split d
  call assert_equal(0, win_splitmove(winnr(), winnr('l')))
  call assert_equal(bufname(winbufnr(1)), 'c')
  call assert_equal(bufname(winbufnr(2)), 'd')
  call assert_equal(bufname(winbufnr(3)), 'b')
  call assert_equal(bufname(winbufnr(4)), 'a')
  call assert_equal(0, win_splitmove(winnr(), winnr('j'), {'vertical': 1}))
  call assert_equal(0, win_splitmove(winnr(), winnr('j'), {'vertical': 1}))
  call assert_equal(bufname(winbufnr(1)), 'c')
  call assert_equal(bufname(winbufnr(2)), 'b')
  call assert_equal(bufname(winbufnr(3)), 'd')
  call assert_equal(bufname(winbufnr(4)), 'a')
  call assert_equal(0, win_splitmove(winnr(), winnr('k'), {'vertical': 1}))
  call assert_equal(bufname(winbufnr(1)), 'd')
  call assert_equal(bufname(winbufnr(2)), 'c')
  call assert_equal(bufname(winbufnr(3)), 'b')
  call assert_equal(bufname(winbufnr(4)), 'a')
  call assert_equal(0, win_splitmove(winnr(), winnr('j'), {'rightbelow': v:true}))
  call assert_equal(bufname(winbufnr(1)), 'c')
  call assert_equal(bufname(winbufnr(2)), 'b')
  call assert_equal(bufname(winbufnr(3)), 'a')
  call assert_equal(bufname(winbufnr(4)), 'd')
  call assert_fails('call win_splitmove(winnr(), winnr("k"), test_null_dict())', 'E1297:')
  only | bd

  call assert_fails('call win_splitmove(winnr(), 123)', 'E957:')
  call assert_fails('call win_splitmove(123, winnr())', 'E957:')
  call assert_fails('call win_splitmove(winnr(), winnr())', 'E957:')

  tabnew
  call assert_fails('call win_splitmove(1, win_getid(1, 1))', 'E957:')
  tabclose
endfunc

" Test for the :only command
func Test_window_only()
  new
  set modified
  new
  call assert_fails('only', 'E445:')
  only!
  " Test for :only with a count
  let wid = win_getid()
  new
  new
  3only
  call assert_equal(1, winnr('$'))
  call assert_equal(wid, win_getid())
  call assert_fails('close', 'E444:')
  call assert_fails('%close', 'E16:')
endfunc

" Test for errors with :wincmd
func Test_wincmd_errors()
  call assert_fails('wincmd g', 'E474:')
  call assert_fails('wincmd ab', 'E474:')
endfunc

" Test for errors with :winpos
func Test_winpos_errors()
  if !has("gui_running") && !has('win32')
    call assert_fails('winpos', 'E188:')
  endif
  call assert_fails('winpos 10', 'E466:')
endfunc

" Test for +cmd in a :split command
func Test_split_cmd()
  split +set\ readonly
  call assert_equal(1, &readonly)
  call assert_equal(2, winnr('$'))
  close
endfunc

" Create maximum number of horizontally or vertically split windows and then
" run commands that create a new horizontally/vertically split window
func Run_noroom_for_newwindow_test(dir_arg)
  let dir = (a:dir_arg == 'v') ? 'vert ' : ''

  " Open as many windows as possible
  while v:true
    try
      exe dir . 'new'
    catch /E36:/
      break
    endtry
  endwhile

  call writefile(['first', 'second', 'third'], 'Xnorfile1', 'D')
  call writefile([], 'Xnorfile2', 'D')
  call writefile([], 'Xnorfile3', 'D')

  " Argument list related commands
  args Xnorfile1 Xnorfile2 Xnorfile3
  next
  for cmd in ['sargument 2', 'snext', 'sprevious', 'sNext', 'srewind',
			\ 'sfirst', 'slast']
    call assert_fails(dir .. cmd, 'E36:')
  endfor
  %argdelete

  " Buffer related commands
  set modified
  hide enew
  for cmd in ['sbuffer Xnorfile1', 'sbnext', 'sbprevious', 'sbNext', 'sbrewind',
		\ 'sbfirst', 'sblast', 'sball', 'sbmodified', 'sunhide']
    call assert_fails(dir .. cmd, 'E36:')
  endfor

  " Window related commands
  for cmd in ['split', 'split Xnorfile2', 'new', 'new Xnorfile3', 'sview Xnorfile1',
		\ 'sfind runtest.vim']
    call assert_fails(dir .. cmd, 'E36:')
  endfor

  " Help
  call assert_fails(dir .. 'help', 'E36:')
  call assert_fails(dir .. 'helpgrep window', 'E36:')

  " Command-line window
  if a:dir_arg == 'h'
    " Cmd-line window is always a horizontally split window
    call assert_beeps('call feedkeys("q:\<CR>", "xt")')
  endif

  " Quickfix and location list window
  if has('quickfix')
    cexpr ''
    call assert_fails(dir .. 'copen', 'E36:')
    lexpr ''
    call assert_fails(dir .. 'lopen', 'E36:')

    " Preview window
    call assert_fails(dir .. 'pedit Xnorfile2', 'E36:')
    call setline(1, 'abc')
    call assert_fails(dir .. 'psearch abc', 'E36:')
  endif

  " Window commands (CTRL-W ^ and CTRL-W f)
  if a:dir_arg == 'h'
    call assert_fails('call feedkeys("\<C-W>^", "xt")', 'E36:')
    call setline(1, 'Xnorfile1')
    call assert_fails('call feedkeys("gg\<C-W>f", "xt")', 'E36:')
  endif
  enew!

  " Tag commands (:stag, :stselect and :stjump)
  call writefile(["!_TAG_FILE_ENCODING\tutf-8\t//",
        \ "second\tXnorfile1\t2",
        \ "third\tXnorfile1\t3",],
        \ 'Xtags')
  set tags=Xtags
  call assert_fails(dir .. 'stag second', 'E36:')
  call assert_fails('call feedkeys(":" .. dir .. "stselect second\n1\n", "xt")', 'E36:')
  call assert_fails(dir .. 'stjump second', 'E36:')
  call assert_fails(dir .. 'ptag second', 'E36:')
  set tags&
  call delete('Xtags')

  " :isplit and :dsplit
  call setline(1, ['#define FOO 1', 'FOO'])
  normal 2G
  call assert_fails(dir .. 'isplit FOO', 'E36:')
  call assert_fails(dir .. 'dsplit FOO', 'E36:')

  " terminal
  if has('terminal')
    call assert_fails(dir .. 'terminal', 'E36:')
  endif

  %bwipe!
  only
endfunc

func Test_split_cmds_with_no_room()
  call Run_noroom_for_newwindow_test('h')
  call Run_noroom_for_newwindow_test('v')
endfunc

" Test for various wincmd failures
func Test_wincmd_fails()
  only!
  call assert_beeps("normal \<C-W>w")
  call assert_beeps("normal \<C-W>p")
  call assert_beeps("normal \<C-W>gk")
  call assert_beeps("normal \<C-W>r")
  call assert_beeps("normal \<C-W>K")
  call assert_beeps("normal \<C-W>H")
  call assert_beeps("normal \<C-W>2gt")
endfunc

func Test_window_resize()
  " Vertical :resize (absolute, relative, min and max size).
  vsplit
  vert resize 8
  call assert_equal(8, winwidth(0))
  vert resize +2
  call assert_equal(10, winwidth(0))
  vert resize -2
  call assert_equal(8, winwidth(0))
  vert resize
  call assert_equal(&columns - 2, winwidth(0))
  vert resize 0
  call assert_equal(1, winwidth(0))
  vert resize 99999
  call assert_equal(&columns - 2, winwidth(0))

  %bwipe!

  " Horizontal :resize (with absolute, relative size, min and max size).
  split
  resize 8
  call assert_equal(8, winheight(0))
  resize +2
  call assert_equal(10, winheight(0))
  resize -2
  call assert_equal(8, winheight(0))
  resize
  call assert_equal(&lines - 4, winheight(0))
  resize 0
  call assert_equal(1, winheight(0))
  resize 99999
  call assert_equal(&lines - 4, winheight(0))

  " :resize with explicit window number.
  let other_winnr = winnr('j')
  exe other_winnr .. 'resize 10'
  call assert_equal(10, winheight(other_winnr))
  call assert_equal(&lines - 10 - 3, winheight(0))
  exe other_winnr .. 'resize +1'
  exe other_winnr .. 'resize +1'
  call assert_equal(12, winheight(other_winnr))
  call assert_equal(&lines - 10 - 3 -2, winheight(0))
  close

  vsplit
  wincmd l
  let other_winnr = winnr('h')
  call assert_notequal(winnr(), other_winnr)
  exe 'vert ' .. other_winnr .. 'resize -' .. &columns
  call assert_equal(0, winwidth(other_winnr))

  %bwipe!
endfunc

" Test for adjusting the window width when a window is closed with some
" windows using 'winfixwidth'
func Test_window_width_adjust()
  only
  " Three vertical windows. Windows 1 and 2 have 'winfixwidth' set and close
  " window 2.
  wincmd v
  vert resize 10
  set winfixwidth
  wincmd v
  set winfixwidth
  wincmd c
  call assert_inrange(10, 12, winwidth(1))
  " Three vertical windows. Windows 2 and 3 have 'winfixwidth' set and close
  " window 3.
  only
  set winfixwidth
  wincmd v
  vert resize 10
  set winfixwidth
  wincmd v
  set nowinfixwidth
  wincmd b
  wincmd c
  call assert_inrange(10, 12, winwidth(2))

  new | only
endfunc

" Test for jumping to a vertical/horizontal neighbor window based on the
" current cursor position
func Test_window_goto_neighbor()
  %bw!

  " Vertical window movement

  " create the following window layout:
  "     +--+--+
  "     |w1|w3|
  "     +--+  |
  "     |w2|  |
  "     +--+--+
  "     |w4   |
  "     +-----+
  new
  vsplit
  split
  " vertically jump from w4
  wincmd b
  call setline(1, repeat(' ', &columns))
  call cursor(1, 1)
  wincmd k
  call assert_equal(2, winnr())
  wincmd b
  call cursor(1, &columns)
  redraw!
  wincmd k
  call assert_equal(3, winnr())
  %bw!

  " create the following window layout:
  "     +--+--+--+
  "     |w1|w2|w3|
  "     +--+--+--+
  "     |w4      |
  "     +--------+
  new
  vsplit
  vsplit
  wincmd b
  call setline(1, repeat(' ', &columns))
  call cursor(1, 1)
  wincmd k
  call assert_equal(1, winnr())
  wincmd b
  call cursor(1, &columns / 2)
  redraw!
  wincmd k
  call assert_equal(2, winnr())
  wincmd b
  call cursor(1, &columns)
  redraw!
  wincmd k
  call assert_equal(3, winnr())
  %bw!

  " Horizontal window movement

  " create the following window layout:
  "     +--+--+--+
  "     |w1|w2|w4|
  "     +--+--+  |
  "     |w3   |  |
  "     +-----+--+
  vsplit
  split
  vsplit
  4wincmd l
  call setline(1, repeat([' '], &lines))
  call cursor(1, 1)
  redraw!
  wincmd h
  call assert_equal(2, winnr())
  4wincmd l
  call cursor(&lines, 1)
  redraw!
  wincmd h
  call assert_equal(3, winnr())
  %bw!

  " create the following window layout:
  "     +--+--+
  "     |w1|w4|
  "     +--+  +
  "     |w2|  |
  "     +--+  +
  "     |w3|  |
  "     +--+--+
  vsplit
  split
  split
  wincmd l
  call setline(1, repeat([' '], &lines))
  call cursor(1, 1)
  redraw!
  wincmd h
  call assert_equal(1, winnr())
  wincmd l
  call cursor(&lines / 2, 1)
  redraw!
  wincmd h
  call assert_equal(2, winnr())
  wincmd l
  call cursor(&lines, 1)
  redraw!
  wincmd h
  call assert_equal(3, winnr())
  %bw!
endfunc

" Test for an autocmd closing the destination window when jumping from one
" window to another.
func Test_close_dest_window()
  split
  edit Xdstfile

  " Test for BufLeave
  augroup T1
    au!
    au BufLeave Xdstfile $wincmd c
  augroup END
  wincmd b
  call assert_equal(1, winnr('$'))
  call assert_equal('Xdstfile', @%)
  augroup T1
    au!
  augroup END

  " Test for WinLeave
  new
  wincmd p
  augroup T1
    au!
    au WinLeave * 1wincmd c
  augroup END
  wincmd t
  call assert_equal(1, winnr('$'))
  call assert_equal('Xdstfile', @%)
  augroup T1
    au!
  augroup END
  augroup! T1
  %bw!
endfunc

func Test_window_minimal_size()
  set winminwidth=0 winminheight=0

  " check size is fixed vertically
  new
  call win_execute(win_getid(2), 'wincmd _')
  call assert_equal(0, winheight(0))
  call feedkeys('0', 'tx')
  call assert_equal(1, winheight(0))
  bwipe!

  " check size is fixed horizontally
  vert new
  call win_execute(win_getid(2), 'wincmd |')
  call assert_equal(0, winwidth(0))
  call feedkeys('0', 'tx')
  call assert_equal(1, winwidth(0))
  bwipe!

  if has('timers')
    " check size is fixed in Insert mode
    func s:CheckSize(timer) abort
      call win_execute(win_getid(2), 'wincmd _')
      call assert_equal(0, winheight(0))
      call feedkeys(" \<Esc>", 't!')
    endfunc
    new
    call timer_start(100, function('s:CheckSize'))
    call feedkeys('a', 'tx!')
    call assert_equal(1, winheight(0))
    bwipe!
    delfunc s:CheckSize
  endif

  set winminwidth& winminheight&
endfunc

func Test_win_move_separator()
  edit a
  leftabove vsplit b
  let w = winwidth(0)
  " check win_move_separator from left window on left window
  call assert_equal(1, winnr())
  for offset in range(5)
    call assert_true(win_move_separator(0, offset))
    call assert_equal(w + offset, winwidth(0))
    call assert_true(0->win_move_separator(-offset))
    call assert_equal(w, winwidth(0))
  endfor
  " check win_move_separator from right window on left window number
  wincmd l
  call assert_notequal(1, winnr())
  for offset in range(5)
    call assert_true(1->win_move_separator(offset))
    call assert_equal(w + offset, winwidth(1))
    call assert_true(win_move_separator(1, -offset))
    call assert_equal(w, winwidth(1))
  endfor
  " check win_move_separator from right window on left window ID
  let id = win_getid(1)
  for offset in range(5)
    call assert_true(win_move_separator(id, offset))
    call assert_equal(w + offset, winwidth(id))
    call assert_true(id->win_move_separator(-offset))
    call assert_equal(w, winwidth(id))
  endfor
  " check win_move_separator from right window on right window is no-op
  let w0 = winwidth(0)
  call assert_true(win_move_separator(0, 1))
  call assert_equal(w0, winwidth(0))
  call assert_true(win_move_separator(0, -1))
  call assert_equal(w0, winwidth(0))

  " check that win_move_separator doesn't error with offsets beyond moving
  " possibility
  call assert_true(win_move_separator(id, 5000))
  call assert_true(winwidth(id) > w)
  call assert_true(win_move_separator(id, -5000))
  call assert_true(winwidth(id) < w)

  " check that win_move_separator returns false for an invalid window
  wincmd =
  let w = winwidth(0)
  call assert_false(win_move_separator(-1, 1))
  call assert_equal(w, winwidth(0))

  " check that win_move_separator returns false for a popup window
  let id = popup_create(['hello', 'world'], {})
  let w = winwidth(id)
  call assert_false(win_move_separator(id, 1))
  call assert_equal(w, winwidth(id))
  call popup_close(id)

  " check that using another tabpage fails without crash
  let id = win_getid()
  tabnew
  call assert_fails('call win_move_separator(id, -1)', 'E1308:')
  tabclose

  %bwipe!
endfunc

func Test_win_move_statusline()
  edit a
  leftabove split b
  let h = winheight(0)
  " check win_move_statusline from top window on top window
  call assert_equal(1, winnr())
  for offset in range(5)
    call assert_true(win_move_statusline(0, offset))
    call assert_equal(h + offset, winheight(0))
    call assert_true(0->win_move_statusline(-offset))
    call assert_equal(h, winheight(0))
  endfor
  " check win_move_statusline from bottom window on top window number
  wincmd j
  call assert_notequal(1, winnr())
  for offset in range(5)
    call assert_true(1->win_move_statusline(offset))
    call assert_equal(h + offset, winheight(1))
    call assert_true(win_move_statusline(1, -offset))
    call assert_equal(h, winheight(1))
  endfor
  " check win_move_statusline from bottom window on bottom window
  let h0 = winheight(0)
  for offset in range(5)
    call assert_true(0->win_move_statusline(-offset))
    call assert_equal(h0 - offset, winheight(0))
    call assert_equal(1 + offset, &cmdheight)
    call assert_true(win_move_statusline(0, offset))
    call assert_equal(h0, winheight(0))
    call assert_equal(1, &cmdheight)
  endfor
  call assert_true(win_move_statusline(0, 1))
  call assert_equal(h0, winheight(0))
  call assert_equal(1, &cmdheight)
  " check win_move_statusline from bottom window on top window ID
  let id = win_getid(1)
  for offset in range(5)
    call assert_true(win_move_statusline(id, offset))
    call assert_equal(h + offset, winheight(id))
    call assert_true(id->win_move_statusline(-offset))
    call assert_equal(h, winheight(id))
  endfor

  " check that win_move_statusline doesn't error with offsets beyond moving
  " possibility
  call assert_true(win_move_statusline(id, 5000))
  call assert_true(winheight(id) > h)
  call assert_true(win_move_statusline(id, -5000))
  call assert_true(winheight(id) < h)

  " check that win_move_statusline returns false for an invalid window
  wincmd =
  let h = winheight(0)
  call assert_false(win_move_statusline(-1, 1))
  call assert_equal(h, winheight(0))

  " check that win_move_statusline returns false for a popup window
  let id = popup_create(['hello', 'world'], {})
  let h = winheight(id)
  call assert_false(win_move_statusline(id, 1))
  call assert_equal(h, winheight(id))
  call popup_close(id)

  " check that using another tabpage fails without crash
  let id = win_getid()
  tabnew
  call assert_fails('call win_move_statusline(id, -1)', 'E1308:')
  tabclose

  %bwipe!
endfunc

" Test for window allocation failure
func Test_window_alloc_failure()
  %bw!

  " test for creating a new window above current window
  call test_alloc_fail(GetAllocId('newwin_wvars'), 0, 0)
  call assert_fails('above new', 'E342:')
  call assert_equal(1, winnr('$'))

  " test for creating a new window below current window
  call test_alloc_fail(GetAllocId('newwin_wvars'), 0, 0)
  call assert_fails('below new', 'E342:')
  call assert_equal(1, winnr('$'))

  " test for popup window creation failure
  call test_alloc_fail(GetAllocId('newwin_wvars'), 0, 0)
  call assert_fails('call popup_create("Hello", {})', 'E342:')
  call assert_equal([], popup_list())

  call test_alloc_fail(GetAllocId('newwin_wvars'), 0, 0)
  call assert_fails('split', 'E342:')
  call assert_equal(1, winnr('$'))

  edit Xwaffile1
  edit Xwaffile2
  call test_alloc_fail(GetAllocId('newwin_wvars'), 0, 0)
  call assert_fails('sb Xwaffile1', 'E342:')
  call assert_equal(1, winnr('$'))
  call assert_equal('Xwaffile2', @%)
  %bw!

  " FIXME: The following test crashes Vim
  " test for new tabpage creation failure
  " call test_alloc_fail(GetAllocId('newwin_wvars'), 0, 0)
  " call assert_fails('tabnew', 'E342:')
  " call assert_equal(1, tabpagenr('$'))
  " call assert_equal(1, winnr('$'))

  " This test messes up the internal Vim window/frame information. So the
  " Test_window_cmd_cmdwin_with_vsp() test fails after running this test.
  " Open a new tab and close everything else to fix this issue.
  tabnew
  tabonly
endfunc

func Test_win_equal_last_status()
  let save_lines = &lines
  set lines=20
  set splitbelow
  set laststatus=0

  split | split | quit
  call assert_equal(winheight(1), winheight(2))

  let &lines = save_lines
  set splitbelow&
  set laststatus&
endfunc

" Test "screen" and "cursor" values for 'splitkeep' with a sequence of
" split operations for various options: with and without a winbar,
" tabline, for each possible value of 'laststatus', 'scrolloff',
" 'equalalways', and with the cursor at the top, middle and bottom.
func Test_splitkeep_options()
  " disallow window resizing
  let save_WS = &t_WS
  set t_WS=

  let gui = has("gui_running")
  inoremap <expr> c "<cmd>copen<bar>wincmd k<CR>"
  for run in range(0, 20)
    let &splitkeep = run > 10 ? 'topline' : 'screen'
    let &scrolloff = (!(run % 4) ? 0 : run)
    let &laststatus = (run % 3)
    let &splitbelow = (run % 3)
    let &equalalways = (run % 2)
    let wsb = (run % 2) && &splitbelow
    let tl = (gui ? 0 : ((run % 5) ? 1 : 0))
    let pos = !(run % 3) ? 'H' : ((run % 2) ? 'M' : 'L')
    tabnew | tabonly! | redraw
    execute (run % 5) ? 'tabnew' : ''
    execute (run % 2) ? 'nnoremenu 1.10 WinBar.Test :echo' : ''
    call setline(1, range(1, 256))
    " No scroll for restore_snapshot
    norm G
    try
      copen | close | colder
    catch /E380/
    endtry
    call assert_equal(257 - winheight(0), line("w0"))

    " No scroll for firstwin horizontal split
    execute 'norm gg' . pos
    split | redraw | wincmd k
    call assert_equal(1, line("w0"))
    call assert_equal(&scroll, winheight(0) / 2)
    wincmd j
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl - wsb, line("w0"))

    " No scroll when resizing windows
    wincmd k | resize +2 | redraw
    call assert_equal(1, line("w0"))
    wincmd j
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl - wsb, line("w0"))

    " No scroll when dragging statusline
    call win_move_statusline(1, -3)
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl - wsb, line("w0"))
    wincmd k
    call assert_equal(1, line("w0"))

    " No scroll when changing shellsize
    set lines+=2
    call assert_equal(1, line("w0"))
    wincmd j
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl - wsb, line("w0"))
    set lines-=2
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl - wsb, line("w0"))
    wincmd k
    call assert_equal(1, line("w0"))

    " No scroll when equalizing windows
    wincmd =
    call assert_equal(1, line("w0"))
    wincmd j
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl - wsb, line("w0"))
    wincmd k
    call assert_equal(1, line("w0"))

    " No scroll in windows split multiple times
    vsplit | split | 4wincmd w
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl - wsb, line("w0"))
    1wincmd w | quit | wincmd l | split
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl - wsb, line("w0"))
    wincmd j
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl - wsb, line("w0"))

    " No scroll in small window
    2wincmd w | only | 5split | wincmd k
    call assert_equal(1, line("w0"))
    wincmd j
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl - wsb, line("w0"))

    " No scroll for vertical split
    quit | vsplit | wincmd l
    call assert_equal(1, line("w0"))
    wincmd h
    call assert_equal(1, line("w0"))

    " No scroll in windows split and quit multiple times
    quit | redraw | split | split | quit | redraw
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl - wsb, line("w0"))

    " No scroll for new buffer
    1wincmd w | only | copen | wincmd k
    call assert_equal(1, line("w0"))
    only
    call assert_equal(1, line("w0"))
    above copen | wincmd j
    call assert_equal(&spk == 'topline' ? 1 : win_screenpos(0)[0] - tl, line("w0"))

    " No scroll when opening cmdwin, and no cursor move when closing cmdwin.
    only | norm ggL
    let curpos = getcurpos()
    norm q:
    call assert_equal(1, line("w0"))
    call assert_equal(curpos, getcurpos())

    " Scroll when cursor becomes invalid in insert mode.
    norm Lic
    call assert_equal(curpos, getcurpos(), 'run ' .. run)

    " No scroll when topline not equal to 1
    only | execute "norm gg5\<C-e>" | split | wincmd k
    call assert_equal(6, line("w0"))
    wincmd j
    call assert_equal(&spk == 'topline' ? 6 : 5 + win_screenpos(0)[0] - tl - wsb, line("w0"))
  endfor

  tabnew | tabonly! | %bwipeout!
  iunmap c
  set scrolloff&
  set splitbelow&
  set laststatus&
  set equalalways&
  set splitkeep&
  let &t_WS = save_WS
endfunc

func Test_splitkeep_cmdwin_cursor_position()
  set splitkeep=screen
  call setline(1, range(&lines))

  " No scroll when cursor is at near bottom of window and cusor position
  " recompution (done by line('w0') in this test) happens while in cmdwin.
  normal! G
  let firstline = line('w0')
  autocmd CmdwinEnter * ++once autocmd WinEnter * ++once call line('w0')
  execute "normal! q:\<C-w>q"
  redraw!
  call assert_equal(firstline, line('w0'))

  " User script can change cursor position successfully while in cmdwin and it
  " shouldn't be changed when closing cmdwin.
  execute "normal! Gq:\<Cmd>call win_execute(winnr('#')->win_getid(), 'call cursor(1, 1)')\<CR>\<C-w>q"
  call assert_equal(1, line('.'))
  call assert_equal(1, col('.'))

  execute "normal! Gq:\<Cmd>autocmd WinEnter * ++once call cursor(1, 1)\<CR>\<C-w>q"
  call assert_equal(1, line('.'))
  call assert_equal(1, col('.'))

  %bwipeout!
  set splitkeep&
endfunc

func Test_splitkeep_misc()
  set splitkeep=screen

  call setline(1, range(1, &lines))
  " Cursor is adjusted to start and end of buffer
  norm M
  wincmd s
  resize 1
  call assert_equal(1, line('.'))
  wincmd j
  norm GM
  resize 1
  call assert_equal(&lines, line('.'))
  only!

  set splitbelow
  norm Gzz
  let top = line('w0')
  " No scroll when aucmd_win is opened
  call setbufvar(bufnr("test", 1) , '&buftype', 'nofile')
  call assert_equal(top, line('w0'))
  " No scroll when tab is changed/closed
  tab help | close
  call assert_equal(top, line('w0'))
  " No scroll when help is closed and buffer line count < window height
  norm ggdG
  call setline(1, range(1, &lines - 10))
  norm G
  let top = line('w0')
  help | quit
  call assert_equal(top, line('w0'))
  " No error when resizing window in autocmd and buffer length changed
  autocmd FileType qf exe "resize" line('$')
  cexpr getline(1, '$')
  copen
  wincmd p
  norm dd
  cexpr getline(1, '$')

  %bwipeout!
  set splitbelow&
  set splitkeep&
endfunc

func Test_splitkeep_cursor()
  CheckScreendump
  let lines =<< trim END
    set splitkeep=screen
    autocmd CursorMoved * wincmd p | wincmd p
    call setline(1, range(1, 200))
    func CursorEqualize()
      call cursor(100, 1)
      wincmd =
    endfunc
    wincmd s
    call CursorEqualize()
  END
  call writefile(lines, 'XTestSplitkeepCallback', 'D')
  let buf = RunVimInTerminal('-S XTestSplitkeepCallback', #{rows: 8})

  call VerifyScreenDump(buf, 'Test_splitkeep_cursor_1', {})

  call term_sendkeys(buf, "j")
  call VerifyScreenDump(buf, 'Test_splitkeep_cursor_2', {})

  call term_sendkeys(buf, ":set scrolloff=0\<CR>G")
  call VerifyScreenDump(buf, 'Test_splitkeep_cursor_3', {})

  call StopVimInTerminal(buf)
endfunc

func Test_splitkeep_callback()
  CheckScreendump
  let lines =<< trim END
    set splitkeep=screen
    call setline(1, range(&lines))
    function C1(a, b)
      split | wincmd p
    endfunction
    function C2(a, b)
      close | split
    endfunction
    nn j <cmd>call job_start([&sh, &shcf, "true"], { 'exit_cb': 'C1' })<CR>
    nn t <cmd>call popup_create(term_start([&sh, &shcf, "true"],
          \ { 'hidden': 1, 'exit_cb': 'C2' }), {})<CR>
  END
  call writefile(lines, 'XTestSplitkeepCallback', 'D')
  let buf = RunVimInTerminal('-S XTestSplitkeepCallback', #{rows: 8})

  call term_sendkeys(buf, "j")
  call VerifyScreenDump(buf, 'Test_splitkeep_callback_1', {})

  call term_sendkeys(buf, ":quit\<CR>Ht")
  call VerifyScreenDump(buf, 'Test_splitkeep_callback_2', {})

  call term_sendkeys(buf, ":set sb\<CR>:quit\<CR>Gj")
  call VerifyScreenDump(buf, 'Test_splitkeep_callback_3', {})

  call term_sendkeys(buf, ":quit\<CR>Gt")
  call VerifyScreenDump(buf, 'Test_splitkeep_callback_4', {})

  call StopVimInTerminal(buf)
endfunc

func Test_splitkeep_fold()
  CheckScreendump

  let lines =<< trim END
    set splitkeep=screen
    set foldmethod=marker
    set number
    let line = 1
    for n in range(1, &lines)
      call setline(line, ['int FuncName() {/*{{{*/', 1, 2, 3, 4, 5, '}/*}}}*/',
            \ 'after fold'])
      let line += 8
    endfor
  END
  call writefile(lines, 'XTestSplitkeepFold', 'D')
  let buf = RunVimInTerminal('-S XTestSplitkeepFold', #{rows: 10})

  call term_sendkeys(buf, "L:wincmd s\<CR>")
  call VerifyScreenDump(buf, 'Test_splitkeep_fold_1', {})

  call term_sendkeys(buf, ":quit\<CR>")
  call VerifyScreenDump(buf, 'Test_splitkeep_fold_2', {})

  call term_sendkeys(buf, "H:below split\<CR>")
  call VerifyScreenDump(buf, 'Test_splitkeep_fold_3', {})

  call term_sendkeys(buf, ":wincmd k\<CR>:quit\<CR>")
  call VerifyScreenDump(buf, 'Test_splitkeep_fold_4', {})

  call StopVimInTerminal(buf)
endfunc

func Test_splitkeep_status()
  CheckScreendump

  let lines =<< trim END
    call setline(1, ['a', 'b', 'c'])
    set nomodified
    set splitkeep=screen
    let win = winnr()
    wincmd s
    wincmd j
  END
  call writefile(lines, 'XTestSplitkeepStatus', 'D')
  let buf = RunVimInTerminal('-S XTestSplitkeepStatus', #{rows: 10})

  call term_sendkeys(buf, ":call win_move_statusline(win, 1)\<CR>")
  call VerifyScreenDump(buf, 'Test_splitkeep_status_1', {})

  call StopVimInTerminal(buf)
endfunc

" skipcol is not reset unnecessarily and is copied to new window
func Test_splitkeep_skipcol()
  CheckScreendump

  let lines =<< trim END
    set splitkeep=topline smoothscroll splitbelow scrolloff=0
    call setline(1, 'with lots of text in one line '->repeat(6))
    norm 2
    wincmd s
  END

  call writefile(lines, 'XTestSplitkeepSkipcol', 'D')
  let buf = RunVimInTerminal('-S XTestSplitkeepSkipcol', #{rows: 12, cols: 40})

  call VerifyScreenDump(buf, 'Test_splitkeep_skipcol_1', {})
endfunc

func Test_new_help_window_on_error()
  help change.txt
  execute "normal! /CTRL-@\<CR>"
  silent! execute "normal! \<C-W>]"

  let wincount = winnr('$')
  help 'mod'

  call assert_equal(wincount, winnr('$'))
  call assert_equal(expand("<cword>"), "'mod'")
endfunc

func Test_smoothscroll_in_zero_width_window()
  let save_lines = &lines
  let save_columns = &columns

  winsize 0 24
  set cpo+=n
  exe "noremap 0 \<C-W>n\<C-W>L"
  norm 000000
  set number smoothscroll
  exe "norm \<C-Y>"

  only!
  let &lines = save_lines
  let &columns = save_columns
  set cpo-=n
  unmap 0
  set nonumber nosmoothscroll
endfunc


" vim: shiftwidth=2 sts=2 expandtab