src/testdir/test_display.vim

" Test for displaying stuff

if !has('gui_running') && has('unix')
  set term=ansi
endif

source view_util.vim
source check.vim
source screendump.vim

func Test_display_foldcolumn()
  CheckFeature folding

  new
  vnew
  vert resize 25
  call assert_equal(25, winwidth(winnr()))
  set isprint=@

  1put='e more noise blah blah‚ more stuff here'

  let expect = [
        \ "e more noise blah blah<82",
        \ "> more stuff here        "
        \ ]

  call cursor(2, 1)
  norm! zt
  let lines = ScreenLines([1,2], winwidth(0))
  call assert_equal(expect, lines)
  set fdc=2
  let lines = ScreenLines([1,2], winwidth(0))
  let expect = [
        \ "  e more noise blah blah<",
        \ "  82> more stuff here    "
        \ ]
  call assert_equal(expect, lines)

  quit!
  quit!
endfunc

func Test_display_foldtext_mbyte()
  CheckFeature folding

  call NewWindow(10, 40)
  call append(0, range(1,20))
  exe "set foldmethod=manual foldtext=foldtext() fillchars=fold:\u2500,vert:\u2502 fdc=2"
  call cursor(2, 1)
  norm! zf13G
  let lines=ScreenLines([1,3], winwidth(0)+1)
  let expect=[
        \ "  1                                     \u2502",
        \ "+ +-- 12 lines: 2". repeat("\u2500", 23). "\u2502",
        \ "  14                                    \u2502",
        \ ]
  call assert_equal(expect, lines)

  set fillchars=fold:-,vert:\|
  let lines=ScreenLines([1,3], winwidth(0)+1)
  let expect=[
        \ "  1                                     |",
        \ "+ +-- 12 lines: 2". repeat("-", 23). "|",
        \ "  14                                    |",
        \ ]
  call assert_equal(expect, lines)

  set foldtext& fillchars& foldmethod& fdc&
  bw!
endfunc

" check that win_ins_lines() and win_del_lines() work when t_cs is empty.
func Test_scroll_without_region()
  CheckScreendump

  let lines =<< trim END
    call setline(1, range(1, 20))
    set t_cs=
    set laststatus=2
  END
  call writefile(lines, 'Xtestscroll', 'D')
  let buf = RunVimInTerminal('-S Xtestscroll', #{rows: 10})

  call VerifyScreenDump(buf, 'Test_scroll_no_region_1', {})

  call term_sendkeys(buf, ":3delete\<cr>")
  call VerifyScreenDump(buf, 'Test_scroll_no_region_2', {})

  call term_sendkeys(buf, ":4put\<cr>")
  call VerifyScreenDump(buf, 'Test_scroll_no_region_3', {})

  call term_sendkeys(buf, ":undo\<cr>")
  call term_sendkeys(buf, ":undo\<cr>")
  call term_sendkeys(buf, ":set laststatus=0\<cr>")
  call VerifyScreenDump(buf, 'Test_scroll_no_region_4', {})

  call term_sendkeys(buf, ":3delete\<cr>")
  call VerifyScreenDump(buf, 'Test_scroll_no_region_5', {})

  call term_sendkeys(buf, ":4put\<cr>")
  call VerifyScreenDump(buf, 'Test_scroll_no_region_6', {})

  " clean up
  call StopVimInTerminal(buf)
endfunc

func Test_display_listchars_precedes()
  call NewWindow(10, 10)
  " Need a physical line that wraps over the complete
  " window size
  call append(0, repeat('aaa aaa aa ', 10))
  call append(1, repeat(['bbb bbb bbb bbb'], 2))
  " remove blank trailing line
  $d
  set list nowrap
  call cursor(1, 1)
  " move to end of line and scroll 2 characters back
  norm! $2zh
  let lines=ScreenLines([1,4], winwidth(0)+1)
  let expect = [
        \ " aaa aa $ |",
        \ "$         |",
        \ "$         |",
        \ "~         |",
        \ ]
  call assert_equal(expect, lines)
  set list listchars+=precedes:< nowrap
  call cursor(1, 1)
  " move to end of line and scroll 2 characters back
  norm! $2zh
  let lines = ScreenLines([1,4], winwidth(0)+1)
  let expect = [
        \ "<aaa aa $ |",
        \ "<         |",
        \ "<         |",
        \ "~         |",
        \ ]
  call assert_equal(expect, lines)
  set wrap
  call cursor(1, 1)
  " the complete line should be displayed in the window
  norm! $

  let lines = ScreenLines([1,10], winwidth(0)+1)
  let expect = [
        \ "<aaa aaa a|",
        \ "a aaa aaa |",
        \ "aa aaa aaa|",
        \ " aa aaa aa|",
        \ "a aa aaa a|",
        \ "aa aa aaa |",
        \ "aaa aa aaa|",
        \ " aaa aa aa|",
        \ "a aaa aa a|",
        \ "aa aaa aa |",
        \ ]
  call assert_equal(expect, lines)
  set list& listchars& wrap&
  bw!
endfunc

" Check that win_lines() works correctly with the number_only parameter=TRUE
" should break early to optimize cost of drawing, but needs to make sure
" that the number column is correctly highlighted.
func Test_scroll_CursorLineNr_update()
  CheckScreendump

  let lines =<< trim END
    hi CursorLineNr ctermfg=73 ctermbg=236
    set nu rnu cursorline cursorlineopt=number
    exe ":norm! o\<esc>110ia\<esc>"
  END
  let filename = 'Xdrawscreen'
  call writefile(lines, filename, 'D')
  let buf = RunVimInTerminal('-S '.filename, #{rows: 5, cols: 50})
  call term_sendkeys(buf, "k")
  call VerifyScreenDump(buf, 'Test_winline_rnu', {})

  " clean up
  call StopVimInTerminal(buf)
endfunc

" check a long file name does not result in the hit-enter prompt
func Test_edit_long_file_name()
  CheckScreendump

  let longName = 'x'->repeat(min([&columns, 255]))
  call writefile([], longName, 'D')
  let buf = RunVimInTerminal('-N -u NONE ' .. longName, #{rows: 8})

  call VerifyScreenDump(buf, 'Test_long_file_name_1', {})

  " clean up
  call StopVimInTerminal(buf)
endfunc

func Test_unprintable_fileformats()
  CheckScreendump

  call writefile(["unix\r", "two"], 'Xunix.txt', 'D')
  call writefile(["mac\r", "two"], 'Xmac.txt', 'D')
  let lines =<< trim END
    edit Xunix.txt
    split Xmac.txt
    edit ++ff=mac
  END
  let filename = 'Xunprintable'
  call writefile(lines, filename, 'D')
  let buf = RunVimInTerminal('-S '.filename, #{rows: 9, cols: 50})
  call VerifyScreenDump(buf, 'Test_display_unprintable_01', {})
  call term_sendkeys(buf, "\<C-W>\<C-W>\<C-L>")
  call VerifyScreenDump(buf, 'Test_display_unprintable_02', {})

  " clean up
  call StopVimInTerminal(buf)
endfunc

" Test for scrolling that modifies buffer during visual block
func Test_visual_block_scroll()
  CheckScreendump

  let lines =<< trim END
    source $VIMRUNTIME/plugin/matchparen.vim
    set scrolloff=1
    call setline(1, ['a', 'b', 'c', 'd', 'e', '', '{', '}', '{', 'f', 'g', '}'])
    call cursor(5, 1)
  END

  let filename = 'Xvisualblockmodifiedscroll'
  call writefile(lines, filename, 'D')

  let buf = RunVimInTerminal('-S '.filename, #{rows: 7})
  call term_sendkeys(buf, "V\<C-D>\<C-D>")

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

  call StopVimInTerminal(buf)
endfunc

" Test for clearing paren highlight when switching buffers
func Test_matchparen_clear_highlight()
  CheckScreendump

  let lines =<< trim END
    source $VIMRUNTIME/plugin/matchparen.vim
    set hidden
    call setline(1, ['()'])
    normal 0

    func OtherBuffer()
       enew
       exe "normal iaa\<Esc>0"
    endfunc
  END
  call writefile(lines, 'XMatchparenClear', 'D')
  let buf = RunVimInTerminal('-S XMatchparenClear', #{rows: 5})
  call VerifyScreenDump(buf, 'Test_matchparen_clear_highlight_1', {})

  call term_sendkeys(buf, ":call OtherBuffer()\<CR>:\<Esc>")
  call VerifyScreenDump(buf, 'Test_matchparen_clear_highlight_2', {})

  call term_sendkeys(buf, "\<C-^>:\<Esc>")
  call VerifyScreenDump(buf, 'Test_matchparen_clear_highlight_1', {})

  call term_sendkeys(buf, "\<C-^>:\<Esc>")
  call VerifyScreenDump(buf, 'Test_matchparen_clear_highlight_2', {})

  call StopVimInTerminal(buf)
endfunc

func Test_display_scroll_at_topline()
  CheckScreendump

  let buf = RunVimInTerminal('', #{cols: 20})
  call term_sendkeys(buf, ":call setline(1, repeat('a', 21))\<CR>")
  call TermWait(buf)
  call term_sendkeys(buf, "O\<Esc>")
  call VerifyScreenDump(buf, 'Test_display_scroll_at_topline', #{rows: 4})

  call StopVimInTerminal(buf)
endfunc

func Test_display_scroll_update_visual()
  CheckScreendump

  let lines =<< trim END
      set scrolloff=0
      call setline(1, repeat(['foo'], 10))
      call sign_define('foo', { 'text': '>' })
      call sign_place(1, 'bar', 'foo', bufnr(), { 'lnum': 2 })
      call sign_place(2, 'bar', 'foo', bufnr(), { 'lnum': 1 })
      autocmd CursorMoved * if getcurpos()[1] == 2 | call sign_unplace('bar', { 'id': 1 }) | endif
  END
  call writefile(lines, 'XupdateVisual.vim', 'D')

  let buf = RunVimInTerminal('-S XupdateVisual.vim', #{rows: 8, cols: 60})
  call term_sendkeys(buf, "VG7kk")
  call VerifyScreenDump(buf, 'Test_display_scroll_update_visual', {})

  call StopVimInTerminal(buf)
endfunc

" Test for 'eob' (EndOfBuffer) item in 'fillchars'
func Test_eob_fillchars()
  " default value
  call assert_match('eob:\~', &fillchars)
  " invalid values
  call assert_fails(':set fillchars=eob:', 'E474:')
  call assert_fails(':set fillchars=eob:xy', 'E474:')
  call assert_fails(':set fillchars=eob:\255', 'E474:')
  call assert_fails(':set fillchars=eob:<ff>', 'E474:')
  call assert_fails(":set fillchars=eob:\x01", 'E474:')
  call assert_fails(':set fillchars=eob:\\x01', 'E474:')
  " default is ~
  new
  redraw
  call assert_equal('~', Screenline(2))
  set fillchars=eob:+
  redraw
  call assert_equal('+', Screenline(2))
  set fillchars=eob:\ 
  redraw
  call assert_equal(' ', nr2char(screenchar(2, 1)))
  set fillchars&
  close
endfunc

" Test for 'foldopen', 'foldclose' and 'foldsep' in 'fillchars'
func Test_fold_fillchars()
  new
  set fdc=2 foldenable foldmethod=manual
  call setline(1, ['one', 'two', 'three', 'four', 'five'])
  2,4fold
  " First check for the default setting for a closed fold
  let lines = ScreenLines([1, 3], 8)
  let expected = [
        \ '  one   ',
        \ '+ +--  3',
        \ '  five  '
        \ ]
  call assert_equal(expected, lines)
  normal 2Gzo
  " check the characters for an open fold
  let lines = ScreenLines([1, 5], 8)
  let expected = [
        \ '  one   ',
        \ '- two   ',
        \ '| three ',
        \ '| four  ',
        \ '  five  '
        \ ]
  call assert_equal(expected, lines)

  " change the setting
  set fillchars=vert:\|,fold:-,eob:~,foldopen:[,foldclose:],foldsep:-

  " check the characters for an open fold
  let lines = ScreenLines([1, 5], 8)
  let expected = [
        \ '  one   ',
        \ '[ two   ',
        \ '- three ',
        \ '- four  ',
        \ '  five  '
        \ ]
  call assert_equal(expected, lines)

  " check the characters for a closed fold
  normal 2Gzc
  let lines = ScreenLines([1, 3], 8)
  let expected = [
        \ '  one   ',
        \ '] +--  3',
        \ '  five  '
        \ ]
  call assert_equal(expected, lines)

  %bw!
  set fillchars& fdc& foldmethod& foldenable&
endfunc

func Test_local_fillchars()
  CheckScreendump

  let lines =<< trim END
      call setline(1, ['window 1']->repeat(3))
      setlocal fillchars=stl:1,stlnc:a,vert:=,eob:x
      vnew
      call setline(1, ['window 2']->repeat(3))
      setlocal fillchars=stl:2,stlnc:b,vert:+,eob:y
      new
      wincmd J
      call setline(1, ['window 3']->repeat(3))
      setlocal fillchars=stl:3,stlnc:c,vert:<,eob:z
      vnew
      call setline(1, ['window 4']->repeat(3))
      setlocal fillchars=stl:4,stlnc:d,vert:>,eob:o
  END
  call writefile(lines, 'Xdisplayfillchars', 'D')
  let buf = RunVimInTerminal('-S Xdisplayfillchars', #{rows: 12})
  call VerifyScreenDump(buf, 'Test_display_fillchars_1', {})

  call term_sendkeys(buf, ":wincmd k\r")
  call VerifyScreenDump(buf, 'Test_display_fillchars_2', {})

  call StopVimInTerminal(buf)
endfunc

func Test_display_linebreak_breakat()
  new
  vert resize 25
  let _breakat = &breakat
  setl signcolumn=yes linebreak breakat=) showbreak=+\ 
  call setline(1, repeat('x', winwidth(0) - 2) .. ')abc')
  let lines = ScreenLines([1, 2], 25)
  let expected = [
          \ '  xxxxxxxxxxxxxxxxxxxxxxx',
          \ '  + )abc                 '
          \ ]
  call assert_equal(expected, lines)
  %bw!
  let &breakat=_breakat
endfunc

func Run_Test_display_lastline(euro)
  let lines =<< trim END
      call setline(1, ['aaa', 'b'->repeat(200)])
      set display=truncate

      vsplit
      100wincmd <
  END
  if a:euro != ''
    let lines[2] = 'set fillchars=vert:\|,lastline:€'
  endif
  call writefile(lines, 'XdispLastline', 'D')
  let buf = RunVimInTerminal('-S XdispLastline', #{rows: 10})
  call VerifyScreenDump(buf, $'Test_display_lastline_{a:euro}1', {})

  call term_sendkeys(buf, ":set display=lastline\<CR>")
  call VerifyScreenDump(buf, $'Test_display_lastline_{a:euro}2', {})

  call term_sendkeys(buf, ":100wincmd >\<CR>")
  call VerifyScreenDump(buf, $'Test_display_lastline_{a:euro}3', {})

  call term_sendkeys(buf, ":set display=truncate\<CR>")
  call VerifyScreenDump(buf, $'Test_display_lastline_{a:euro}4', {})

  call term_sendkeys(buf, ":close\<CR>")
  call term_sendkeys(buf, ":3split\<CR>")
  call VerifyScreenDump(buf, $'Test_display_lastline_{a:euro}5', {})

  call term_sendkeys(buf, ":close\<CR>")
  call term_sendkeys(buf, ":2vsplit\<CR>")
  call VerifyScreenDump(buf, $'Test_display_lastline_{a:euro}6', {})

  call StopVimInTerminal(buf)
endfunc

func Test_display_lastline()
  CheckScreendump

  call Run_Test_display_lastline('')
  call Run_Test_display_lastline('euro_')

  call assert_fails(':set fillchars=lastline:', 'E474:')
  call assert_fails(':set fillchars=lastline:〇', 'E474:')
endfunc

func Test_display_long_lastline()
  CheckScreendump

  let lines =<< trim END
    set display=lastline smoothscroll scrolloff=0
    call setline(1, [
      \'aaaaa'->repeat(150),
      \'bbbbb '->repeat(7) .. 'ccccc '->repeat(7) .. 'ddddd '->repeat(7)
    \])
  END

  call writefile(lines, 'XdispLongline', 'D')
  let buf = RunVimInTerminal('-S XdispLongline', #{rows: 14, cols: 35})

  call term_sendkeys(buf, "736|")
  call VerifyScreenDump(buf, 'Test_display_long_line_1', {})

  " The correct part of the last line is moved into view.
  call term_sendkeys(buf, "D")
  call VerifyScreenDump(buf, 'Test_display_long_line_2', {})

  " "w_skipcol" does not change because the topline is still long enough
  " to maintain the current skipcol.
  call term_sendkeys(buf, "g04l11gkD")
  call VerifyScreenDump(buf, 'Test_display_long_line_3', {})

  " "w_skipcol" is reset to bring the entire topline into view because
  " the line length is now smaller than the current skipcol + marker.
  call term_sendkeys(buf, "x")
  call VerifyScreenDump(buf, 'Test_display_long_line_4', {})

  call StopVimInTerminal(buf)
endfunc

" Moving the cursor to a line that doesn't fit in the window should show
" correctly.
func Test_display_cursor_long_line()
  CheckScreendump

  let lines =<< trim END
    call setline(1, ['a', 'bbbbb '->repeat(100), 'c'])
    norm $j
  END

  call writefile(lines, 'XdispCursorLongline', 'D')
  let buf = RunVimInTerminal('-S XdispCursorLongline', #{rows: 8})

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

  call StopVimInTerminal(buf)
endfunc

" vim: shiftwidth=2 sts=2 expandtab