neovim

Neovim text editor
git clone https://git.dasho.dev/neovim.git
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window_spec.lua (121449B)


      1 local t = require('test.testutil')
      2 local n = require('test.functional.testnvim')()
      3 local Screen = require('test.functional.ui.screen')
      4 
      5 local clear, curbuf, curbuf_contents, curwin, eq, neq, matches, ok, feed, insert, eval =
      6  n.clear,
      7  n.api.nvim_get_current_buf,
      8  n.curbuf_contents,
      9  n.api.nvim_get_current_win,
     10  t.eq,
     11  t.neq,
     12  t.matches,
     13  t.ok,
     14  n.feed,
     15  n.insert,
     16  n.eval
     17 local poke_eventloop = n.poke_eventloop
     18 local exec = n.exec
     19 local exec_lua = n.exec_lua
     20 local fn = n.fn
     21 local request = n.request
     22 local NIL = vim.NIL
     23 local api = n.api
     24 local command = n.command
     25 local pcall_err = t.pcall_err
     26 local assert_alive = n.assert_alive
     27 
     28 describe('API/win', function()
     29  before_each(clear)
     30 
     31  describe('get_buf', function()
     32    it('works', function()
     33      eq(curbuf(), api.nvim_win_get_buf(api.nvim_list_wins()[1]))
     34      command('new')
     35      api.nvim_set_current_win(api.nvim_list_wins()[2])
     36      eq(curbuf(), api.nvim_win_get_buf(api.nvim_list_wins()[2]))
     37      neq(
     38        api.nvim_win_get_buf(api.nvim_list_wins()[1]),
     39        api.nvim_win_get_buf(api.nvim_list_wins()[2])
     40      )
     41    end)
     42  end)
     43 
     44  describe('set_buf', function()
     45    it('works', function()
     46      command('new')
     47      local windows = api.nvim_list_wins()
     48      neq(api.nvim_win_get_buf(windows[2]), api.nvim_win_get_buf(windows[1]))
     49      api.nvim_win_set_buf(windows[2], api.nvim_win_get_buf(windows[1]))
     50      eq(api.nvim_win_get_buf(windows[2]), api.nvim_win_get_buf(windows[1]))
     51    end)
     52 
     53    it('validates args', function()
     54      eq('Invalid buffer id: 23', pcall_err(api.nvim_win_set_buf, api.nvim_get_current_win(), 23))
     55      eq('Invalid window id: 23', pcall_err(api.nvim_win_set_buf, 23, api.nvim_get_current_buf()))
     56    end)
     57 
     58    it('disallowed in cmdwin if win=cmdwin_{old_cur}win or buf=cmdwin_buf', function()
     59      local new_buf = api.nvim_create_buf(true, true)
     60      local old_win = api.nvim_get_current_win()
     61      local new_win = api.nvim_open_win(new_buf, false, {
     62        relative = 'editor',
     63        row = 10,
     64        col = 10,
     65        width = 50,
     66        height = 10,
     67      })
     68      feed('q:')
     69      eq(
     70        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
     71        pcall_err(api.nvim_win_set_buf, 0, new_buf)
     72      )
     73      eq(
     74        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
     75        pcall_err(api.nvim_win_set_buf, old_win, new_buf)
     76      )
     77      eq(
     78        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
     79        pcall_err(api.nvim_win_set_buf, new_win, 0)
     80      )
     81      matches(
     82        'E11: Invalid in command%-line window; <CR> executes, CTRL%-C quits$',
     83        pcall_err(
     84          exec_lua,
     85          [[
     86           local cmdwin_buf = vim.api.nvim_get_current_buf()
     87           local new_win, new_buf = ...
     88           vim._with({buf = new_buf}, function()
     89             vim.api.nvim_win_set_buf(new_win, cmdwin_buf)
     90           end)
     91         ]],
     92          new_win,
     93          new_buf
     94        )
     95      )
     96      matches(
     97        'E11: Invalid in command%-line window; <CR> executes, CTRL%-C quits$',
     98        pcall_err(
     99          exec_lua,
    100          [[
    101           local cmdwin_win = vim.api.nvim_get_current_win()
    102           local new_win, new_buf = ...
    103           vim._with({win = new_win}, function()
    104             vim.api.nvim_win_set_buf(cmdwin_win, new_buf)
    105           end)
    106         ]],
    107          new_win,
    108          new_buf
    109        )
    110      )
    111 
    112      local next_buf = api.nvim_create_buf(true, true)
    113      api.nvim_win_set_buf(new_win, next_buf)
    114      eq(next_buf, api.nvim_win_get_buf(new_win))
    115    end)
    116 
    117    describe("with 'autochdir'", function()
    118      local topdir
    119      local otherbuf
    120      local oldwin
    121      local newwin
    122 
    123      before_each(function()
    124        command('set shellslash')
    125        topdir = fn.getcwd()
    126        t.mkdir(topdir .. '/Xacd')
    127        t.mkdir(topdir .. '/Xacd/foo')
    128        otherbuf = api.nvim_create_buf(false, true)
    129        api.nvim_buf_set_name(otherbuf, topdir .. '/Xacd/baz.txt')
    130 
    131        command('set autochdir')
    132        command('edit Xacd/foo/bar.txt')
    133        eq(topdir .. '/Xacd/foo', fn.getcwd())
    134 
    135        oldwin = api.nvim_get_current_win()
    136        command('vsplit')
    137        newwin = api.nvim_get_current_win()
    138      end)
    139 
    140      after_each(function()
    141        n.rmdir(topdir .. '/Xacd')
    142      end)
    143 
    144      it('does not change cwd with non-current window', function()
    145        api.nvim_win_set_buf(oldwin, otherbuf)
    146        eq(topdir .. '/Xacd/foo', fn.getcwd())
    147      end)
    148 
    149      it('changes cwd with current window', function()
    150        api.nvim_win_set_buf(newwin, otherbuf)
    151        eq(topdir .. '/Xacd', fn.getcwd())
    152      end)
    153    end)
    154  end)
    155 
    156  describe('{get,set}_cursor', function()
    157    it('works', function()
    158      eq({ 1, 0 }, api.nvim_win_get_cursor(0))
    159      command('normal ityping\027o  some text')
    160      eq('typing\n  some text', curbuf_contents())
    161      eq({ 2, 10 }, api.nvim_win_get_cursor(0))
    162      api.nvim_win_set_cursor(0, { 2, 6 })
    163      command('normal i dumb')
    164      eq('typing\n  some dumb text', curbuf_contents())
    165    end)
    166 
    167    it('no memory leak when using invalid window ID with invalid pos', function()
    168      eq('Invalid window id: 1', pcall_err(api.nvim_win_set_cursor, 1, { 'b\na' }))
    169    end)
    170 
    171    it('updates the screen, and also when the window is unfocused', function()
    172      local screen = Screen.new(30, 9)
    173 
    174      insert('prologue')
    175      feed('100o<esc>')
    176      insert('epilogue')
    177      local win = curwin()
    178      feed('gg')
    179 
    180      local s1 = [[
    181        ^prologue                      |
    182                                      |*8
    183      ]]
    184      screen:expect(s1)
    185      -- cursor position is at beginning
    186      eq({ 1, 0 }, api.nvim_win_get_cursor(win))
    187 
    188      -- move cursor to end
    189      api.nvim_win_set_cursor(win, { 101, 0 })
    190      screen:expect([[
    191                                      |*7
    192        ^epilogue                      |
    193                                      |
    194      ]])
    195 
    196      -- move cursor to the beginning again
    197      api.nvim_win_set_cursor(win, { 1, 0 })
    198      screen:expect(s1)
    199 
    200      -- move focus to new window
    201      command('new')
    202      neq(win, curwin())
    203 
    204      -- sanity check, cursor position is kept
    205      eq({ 1, 0 }, api.nvim_win_get_cursor(win))
    206      local s2 = [[
    207        ^                              |
    208        {1:~                             }|*2
    209        {3:[No Name]                     }|
    210        prologue                      |
    211                                      |*2
    212        {2:[No Name] [+]                 }|
    213                                      |
    214      ]]
    215      screen:expect(s2)
    216 
    217      -- move cursor to end
    218      api.nvim_win_set_cursor(win, { 101, 0 })
    219      screen:expect([[
    220        ^                              |
    221        {1:~                             }|*2
    222        {3:[No Name]                     }|
    223                                      |*2
    224        epilogue                      |
    225        {2:[No Name] [+]                 }|
    226                                      |
    227      ]])
    228 
    229      -- move cursor to the beginning again
    230      api.nvim_win_set_cursor(win, { 1, 0 })
    231      screen:expect(s2)
    232 
    233      -- curwin didn't change back
    234      neq(win, curwin())
    235    end)
    236 
    237    it('remembers what column it wants to be in', function()
    238      insert('first line')
    239      feed('o<esc>')
    240      insert('second line')
    241 
    242      feed('gg')
    243      poke_eventloop() -- let nvim process the 'gg' command
    244 
    245      -- cursor position is at beginning
    246      local win = curwin()
    247      eq({ 1, 0 }, api.nvim_win_get_cursor(win))
    248 
    249      -- move cursor to column 5
    250      api.nvim_win_set_cursor(win, { 1, 5 })
    251 
    252      -- move down a line
    253      feed('j')
    254      poke_eventloop() -- let nvim process the 'j' command
    255 
    256      -- cursor is still in column 5
    257      eq({ 2, 5 }, api.nvim_win_get_cursor(win))
    258    end)
    259 
    260    it('updates cursorline and statusline ruler in non-current window', function()
    261      local screen = Screen.new(60, 8)
    262      command('set ruler')
    263      command('set cursorline')
    264      insert([[
    265        aaa
    266        bbb
    267        ccc
    268        ddd]])
    269      local oldwin = curwin()
    270      command('vsplit')
    271      screen:expect([[
    272        aaa                           aaa                          |
    273        bbb                           bbb                          |
    274        ccc                           ccc                          |
    275        {21:dd^d                           }{21:ddd                          }|
    276        {1:~                             }{1:~                            }|*2
    277        {3:< Name] [+] 4,3            All }{2:<Name] [+] 4,3            All}|
    278                                                                    |
    279      ]])
    280      api.nvim_win_set_cursor(oldwin, { 1, 0 })
    281      screen:expect([[
    282        aaa                           {21:aaa                          }|
    283        bbb                           bbb                          |
    284        ccc                           ccc                          |
    285        {21:dd^d                           }ddd                          |
    286        {1:~                             }{1:~                            }|*2
    287        {3:< Name] [+] 4,3            All }{2:<Name] [+] 1,1            All}|
    288                                                                    |
    289      ]])
    290    end)
    291 
    292    it('updates cursorcolumn in non-current window', function()
    293      local screen = Screen.new(60, 8)
    294      command('set cursorcolumn')
    295      insert([[
    296        aaa
    297        bbb
    298        ccc
    299        ddd]])
    300      local oldwin = curwin()
    301      command('vsplit')
    302      screen:expect([[
    303        aa{21:a}                           aa{21:a}                          |
    304        bb{21:b}                           bb{21:b}                          |
    305        cc{21:c}                           cc{21:c}                          |
    306        dd^d                           ddd                          |
    307        {1:~                             }{1:~                            }|*2
    308        {3:[No Name] [+]                  }{2:[No Name] [+]                }|
    309                                                                    |
    310      ]])
    311      api.nvim_win_set_cursor(oldwin, { 2, 0 })
    312      screen:expect([[
    313        aa{21:a}                           {21:a}aa                          |
    314        bb{21:b}                           bbb                          |
    315        cc{21:c}                           {21:c}cc                          |
    316        dd^d                           {21:d}dd                          |
    317        {1:~                             }{1:~                            }|*2
    318        {3:[No Name] [+]                  }{2:[No Name] [+]                }|
    319                                                                    |
    320      ]])
    321    end)
    322  end)
    323 
    324  describe('{get,set}_height', function()
    325    it('works', function()
    326      command('vsplit')
    327      eq(
    328        api.nvim_win_get_height(api.nvim_list_wins()[2]),
    329        api.nvim_win_get_height(api.nvim_list_wins()[1])
    330      )
    331      api.nvim_set_current_win(api.nvim_list_wins()[2])
    332      command('split')
    333      eq(
    334        api.nvim_win_get_height(api.nvim_list_wins()[2]),
    335        math.floor(api.nvim_win_get_height(api.nvim_list_wins()[1]) / 2)
    336      )
    337      api.nvim_win_set_height(api.nvim_list_wins()[2], 2)
    338      eq(2, api.nvim_win_get_height(api.nvim_list_wins()[2]))
    339    end)
    340 
    341    it('failure modes', function()
    342      command('split')
    343      eq('Invalid window id: 999999', pcall_err(api.nvim_win_set_height, 999999, 10))
    344      eq(
    345        'Wrong type for argument 2 when calling nvim_win_set_height, expecting Integer',
    346        pcall_err(api.nvim_win_set_height, 0, 0.9)
    347      )
    348    end)
    349 
    350    it('correctly handles height=1', function()
    351      command('split')
    352      api.nvim_set_current_win(api.nvim_list_wins()[1])
    353      api.nvim_win_set_height(api.nvim_list_wins()[2], 1)
    354      eq(1, api.nvim_win_get_height(api.nvim_list_wins()[2]))
    355    end)
    356 
    357    it('correctly handles height=1 with a winbar', function()
    358      command('set winbar=foobar')
    359      command('set winminheight=0')
    360      command('split')
    361      api.nvim_set_current_win(api.nvim_list_wins()[1])
    362      api.nvim_win_set_height(api.nvim_list_wins()[2], 1)
    363      eq(1, api.nvim_win_get_height(api.nvim_list_wins()[2]))
    364    end)
    365 
    366    it('do not cause ml_get errors with foldmethod=expr #19989', function()
    367      insert([[
    368        aaaaa
    369        bbbbb
    370        ccccc]])
    371      command('set foldmethod=expr')
    372      exec([[
    373        new
    374        let w = nvim_get_current_win()
    375        wincmd w
    376        call nvim_win_set_height(w, 5)
    377      ]])
    378      feed('l')
    379      eq('', api.nvim_get_vvar('errmsg'))
    380    end)
    381  end)
    382 
    383  describe('{get,set}_width', function()
    384    it('works', function()
    385      command('split')
    386      eq(
    387        api.nvim_win_get_width(api.nvim_list_wins()[2]),
    388        api.nvim_win_get_width(api.nvim_list_wins()[1])
    389      )
    390      api.nvim_set_current_win(api.nvim_list_wins()[2])
    391      command('vsplit')
    392      eq(
    393        api.nvim_win_get_width(api.nvim_list_wins()[2]),
    394        math.floor(api.nvim_win_get_width(api.nvim_list_wins()[1]) / 2)
    395      )
    396      api.nvim_win_set_width(api.nvim_list_wins()[2], 2)
    397      eq(2, api.nvim_win_get_width(api.nvim_list_wins()[2]))
    398    end)
    399 
    400    it('failure modes', function()
    401      command('vsplit')
    402      eq('Invalid window id: 999999', pcall_err(api.nvim_win_set_width, 999999, 10))
    403      eq(
    404        'Wrong type for argument 2 when calling nvim_win_set_width, expecting Integer',
    405        pcall_err(api.nvim_win_set_width, 0, 0.9)
    406      )
    407    end)
    408 
    409    it('do not cause ml_get errors with foldmethod=expr #19989', function()
    410      insert([[
    411        aaaaa
    412        bbbbb
    413        ccccc]])
    414      command('set foldmethod=expr')
    415      exec([[
    416        vnew
    417        let w = nvim_get_current_win()
    418        wincmd w
    419        call nvim_win_set_width(w, 5)
    420      ]])
    421      feed('l')
    422      eq('', api.nvim_get_vvar('errmsg'))
    423    end)
    424  end)
    425 
    426  describe('{get,set,del}_var', function()
    427    it('works', function()
    428      api.nvim_win_set_var(0, 'lua', { 1, 2, { ['3'] = 1 } })
    429      eq({ 1, 2, { ['3'] = 1 } }, api.nvim_win_get_var(0, 'lua'))
    430      eq({ 1, 2, { ['3'] = 1 } }, api.nvim_eval('w:lua'))
    431      eq(1, fn.exists('w:lua'))
    432      api.nvim_win_del_var(0, 'lua')
    433      eq(0, fn.exists('w:lua'))
    434      eq('Key not found: lua', pcall_err(api.nvim_win_del_var, 0, 'lua'))
    435      api.nvim_win_set_var(0, 'lua', 1)
    436      command('lockvar w:lua')
    437      eq('Key is locked: lua', pcall_err(api.nvim_win_del_var, 0, 'lua'))
    438      eq('Key is locked: lua', pcall_err(api.nvim_win_set_var, 0, 'lua', 1))
    439    end)
    440 
    441    it('window_set_var returns the old value', function()
    442      local val1 = { 1, 2, { ['3'] = 1 } }
    443      local val2 = { 4, 7 }
    444      eq(NIL, request('window_set_var', 0, 'lua', val1))
    445      eq(val1, request('window_set_var', 0, 'lua', val2))
    446    end)
    447 
    448    it('window_del_var returns the old value', function()
    449      local val1 = { 1, 2, { ['3'] = 1 } }
    450      local val2 = { 4, 7 }
    451      eq(NIL, request('window_set_var', 0, 'lua', val1))
    452      eq(val1, request('window_set_var', 0, 'lua', val2))
    453      eq(val2, request('window_del_var', 0, 'lua'))
    454    end)
    455  end)
    456 
    457  describe('nvim_get_option_value, nvim_set_option_value', function()
    458    it('works', function()
    459      api.nvim_set_option_value('colorcolumn', '4,3', {})
    460      eq('4,3', api.nvim_get_option_value('colorcolumn', {}))
    461      command('set modified hidden')
    462      command('enew') -- edit new buffer, window option is preserved
    463      eq('4,3', api.nvim_get_option_value('colorcolumn', {}))
    464 
    465      -- global-local option
    466      api.nvim_set_option_value('statusline', 'window-status', { win = 0 })
    467      eq('window-status', api.nvim_get_option_value('statusline', { win = 0 }))
    468      eq(
    469        "%<%f %{%nvim_eval_statusline('%h%w%m%r', {'maxwidth': 30}).width > 0 ? '%h%w%m%r ' : ''%}%=%{% &showcmdloc == 'statusline' ? '%-10.S ' : '' %}%{% exists('b:keymap_name') ? '<'..b:keymap_name..'> ' : '' %}%{% &ruler ? ( &rulerformat == '' ? '%-14.(%l,%c%V%) %P' : &rulerformat ) : '' %}",
    470        api.nvim_get_option_value('statusline', { scope = 'global' })
    471      )
    472      command('set modified')
    473      command('enew') -- global-local: not preserved in new buffer
    474      -- confirm local value was not copied
    475      eq(
    476        "%<%f %{%nvim_eval_statusline('%h%w%m%r', {'maxwidth': 30}).width > 0 ? '%h%w%m%r ' : ''%}%=%{% &showcmdloc == 'statusline' ? '%-10.S ' : '' %}%{% exists('b:keymap_name') ? '<'..b:keymap_name..'> ' : '' %}%{% &ruler ? ( &rulerformat == '' ? '%-14.(%l,%c%V%) %P' : &rulerformat ) : '' %}",
    477        api.nvim_get_option_value('statusline', { win = 0 })
    478      )
    479      eq('', eval('&l:statusline'))
    480    end)
    481 
    482    it('after switching windows #15390', function()
    483      command('tabnew')
    484      local tab1 = unpack(api.nvim_list_tabpages())
    485      local win1 = unpack(api.nvim_tabpage_list_wins(tab1))
    486      api.nvim_set_option_value('statusline', 'window-status', { win = win1 })
    487      command('split')
    488      command('wincmd J')
    489      command('wincmd j')
    490      eq('window-status', api.nvim_get_option_value('statusline', { win = win1 }))
    491      assert_alive()
    492    end)
    493 
    494    describe('after closing', function()
    495      local buf, win0, win1, win2
    496 
    497      before_each(function()
    498        win0 = api.nvim_get_current_win()
    499        command('new')
    500        buf = api.nvim_get_current_buf()
    501        win1 = api.nvim_get_current_win()
    502        command('set numberwidth=10')
    503        command('split')
    504        win2 = api.nvim_get_current_win()
    505        command('set numberwidth=15')
    506        command('enew')
    507        api.nvim_set_current_win(win1)
    508        command('normal ix')
    509        command('enew')
    510        api.nvim_set_current_win(win0)
    511        eq(4, api.nvim_get_option_value('numberwidth', {}))
    512      end)
    513 
    514      -- at this point buffer `buf` is current in no windows. Closing shouldn't affect its defaults
    515      it('0 windows', function()
    516        api.nvim_set_current_buf(buf)
    517        eq(10, api.nvim_get_option_value('numberwidth', {}))
    518      end)
    519 
    520      it('1 window', function()
    521        api.nvim_win_close(win1, false)
    522 
    523        api.nvim_set_current_buf(buf)
    524        eq(10, api.nvim_get_option_value('numberwidth', {}))
    525      end)
    526 
    527      it('2 windows', function()
    528        api.nvim_win_close(win1, false)
    529        api.nvim_win_close(win2, false)
    530 
    531        api.nvim_set_current_buf(buf)
    532        eq(10, api.nvim_get_option_value('numberwidth', {}))
    533      end)
    534    end)
    535 
    536    it('returns values for unset local options', function()
    537      eq(-1, api.nvim_get_option_value('scrolloff', { win = 0, scope = 'local' }))
    538    end)
    539  end)
    540 
    541  describe('get_position', function()
    542    it('works', function()
    543      local height = api.nvim_win_get_height(api.nvim_list_wins()[1])
    544      local width = api.nvim_win_get_width(api.nvim_list_wins()[1])
    545      command('split')
    546      command('vsplit')
    547      eq({ 0, 0 }, api.nvim_win_get_position(api.nvim_list_wins()[1]))
    548      local vsplit_pos = math.floor(width / 2)
    549      local split_pos = math.floor(height / 2)
    550      local win2row, win2col = unpack(api.nvim_win_get_position(api.nvim_list_wins()[2]))
    551      local win3row, win3col = unpack(api.nvim_win_get_position(api.nvim_list_wins()[3]))
    552      eq(0, win2row)
    553      eq(0, win3col)
    554      ok(vsplit_pos - 1 <= win2col and win2col <= vsplit_pos + 1)
    555      ok(split_pos - 1 <= win3row and win3row <= split_pos + 1)
    556    end)
    557  end)
    558 
    559  describe('get_position', function()
    560    it('works', function()
    561      command('tabnew')
    562      command('vsplit')
    563      eq(api.nvim_win_get_tabpage(api.nvim_list_wins()[1]), api.nvim_list_tabpages()[1])
    564      eq(api.nvim_win_get_tabpage(api.nvim_list_wins()[2]), api.nvim_list_tabpages()[2])
    565      eq(api.nvim_win_get_tabpage(api.nvim_list_wins()[3]), api.nvim_list_tabpages()[2])
    566    end)
    567  end)
    568 
    569  describe('get_number', function()
    570    it('works', function()
    571      local wins = api.nvim_list_wins()
    572      eq(1, api.nvim_win_get_number(wins[1]))
    573 
    574      command('split')
    575      local win1, win2 = unpack(api.nvim_list_wins())
    576      eq(1, api.nvim_win_get_number(win1))
    577      eq(2, api.nvim_win_get_number(win2))
    578 
    579      command('wincmd J')
    580      eq(2, api.nvim_win_get_number(win1))
    581      eq(1, api.nvim_win_get_number(win2))
    582 
    583      command('tabnew')
    584      local win3 = api.nvim_list_wins()[3]
    585      -- First tab page
    586      eq(2, api.nvim_win_get_number(win1))
    587      eq(1, api.nvim_win_get_number(win2))
    588      -- Second tab page
    589      eq(1, api.nvim_win_get_number(win3))
    590    end)
    591  end)
    592 
    593  describe('is_valid', function()
    594    it('works', function()
    595      command('split')
    596      local win = api.nvim_list_wins()[2]
    597      api.nvim_set_current_win(win)
    598      ok(api.nvim_win_is_valid(win))
    599      command('close')
    600      ok(not api.nvim_win_is_valid(win))
    601    end)
    602  end)
    603 
    604  describe('close', function()
    605    it('can close current window', function()
    606      local oldwin = api.nvim_get_current_win()
    607      command('split')
    608      local newwin = api.nvim_get_current_win()
    609      api.nvim_win_close(newwin, false)
    610      eq({ oldwin }, api.nvim_list_wins())
    611    end)
    612 
    613    it('can close noncurrent window', function()
    614      local oldwin = api.nvim_get_current_win()
    615      command('split')
    616      local newwin = api.nvim_get_current_win()
    617      api.nvim_win_close(oldwin, false)
    618      eq({ newwin }, api.nvim_list_wins())
    619    end)
    620 
    621    it("handles changed buffer when 'hidden' is unset", function()
    622      command('set nohidden')
    623      local oldwin = api.nvim_get_current_win()
    624      insert('text')
    625      command('new')
    626      local newwin = api.nvim_get_current_win()
    627      eq(
    628        'Vim:E37: No write since last change (add ! to override)',
    629        pcall_err(api.nvim_win_close, oldwin, false)
    630      )
    631      eq({ newwin, oldwin }, api.nvim_list_wins())
    632    end)
    633 
    634    it('handles changed buffer with force', function()
    635      local oldwin = api.nvim_get_current_win()
    636      insert('text')
    637      command('new')
    638      local newwin = api.nvim_get_current_win()
    639      api.nvim_win_close(oldwin, true)
    640      eq({ newwin }, api.nvim_list_wins())
    641    end)
    642 
    643    it('in cmdline-window #9767', function()
    644      command('split')
    645      eq(2, #api.nvim_list_wins())
    646      local oldbuf = api.nvim_get_current_buf()
    647      local oldwin = api.nvim_get_current_win()
    648      local otherwin = api.nvim_open_win(0, false, {
    649        relative = 'editor',
    650        row = 10,
    651        col = 10,
    652        width = 10,
    653        height = 10,
    654      })
    655      -- Open cmdline-window.
    656      feed('q:')
    657      eq(4, #api.nvim_list_wins())
    658      eq(':', fn.getcmdwintype())
    659      -- Not allowed to close previous window from cmdline-window.
    660      eq(
    661        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
    662        pcall_err(api.nvim_win_close, oldwin, true)
    663      )
    664      -- Closing other windows is fine.
    665      api.nvim_win_close(otherwin, true)
    666      eq(false, api.nvim_win_is_valid(otherwin))
    667      -- Close cmdline-window.
    668      api.nvim_win_close(0, true)
    669      eq(2, #api.nvim_list_wins())
    670      eq('', fn.getcmdwintype())
    671 
    672      -- Closing curwin in context of a different window shouldn't close cmdwin.
    673      otherwin = api.nvim_open_win(0, false, {
    674        relative = 'editor',
    675        row = 10,
    676        col = 10,
    677        width = 10,
    678        height = 10,
    679      })
    680      feed('q:')
    681      exec_lua(
    682        [[
    683        vim._with({win = ...}, function()
    684          vim.api.nvim_win_close(0, true)
    685        end)
    686      ]],
    687        otherwin
    688      )
    689      eq(false, api.nvim_win_is_valid(otherwin))
    690      eq(':', fn.getcmdwintype())
    691      -- Closing cmdwin in context of a non-previous window is still OK.
    692      otherwin = api.nvim_open_win(oldbuf, false, {
    693        relative = 'editor',
    694        row = 10,
    695        col = 10,
    696        width = 10,
    697        height = 10,
    698      })
    699      exec_lua(
    700        [[
    701        local otherwin, cmdwin = ...
    702        vim._with({win = otherwin}, function()
    703          vim.api.nvim_win_close(cmdwin, true)
    704        end)
    705      ]],
    706        otherwin,
    707        api.nvim_get_current_win()
    708      )
    709      eq('', fn.getcmdwintype())
    710      eq(true, api.nvim_win_is_valid(otherwin))
    711    end)
    712 
    713    it('closing current (float) window of another tabpage #15313', function()
    714      command('tabedit')
    715      command('botright split')
    716      local prevwin = curwin()
    717      eq(2, eval('tabpagenr()'))
    718      local win = api.nvim_open_win(0, true, {
    719        relative = 'editor',
    720        row = 10,
    721        col = 10,
    722        width = 50,
    723        height = 10,
    724      })
    725      local tab = eval('tabpagenr()')
    726      command('tabprevious')
    727      eq(1, eval('tabpagenr()'))
    728      api.nvim_win_close(win, false)
    729 
    730      eq(prevwin, api.nvim_tabpage_get_win(tab))
    731      assert_alive()
    732    end)
    733 
    734    it('closing a float does not enter unfocusable or hidden prevwin', function()
    735      local firstwin = api.nvim_get_current_win()
    736      local wins = {} ---@type integer[]
    737      for _ = 1, 4 do
    738        wins[#wins + 1] = api.nvim_open_win(0, true, {
    739          relative = 'editor',
    740          row = 10,
    741          col = 10,
    742          width = 50,
    743          height = 10,
    744        })
    745      end
    746      api.nvim_win_set_config(wins[3], { hide = true })
    747      api.nvim_win_close(0, false)
    748      eq(firstwin, api.nvim_get_current_win())
    749      api.nvim_set_current_win(wins[2])
    750      api.nvim_set_current_win(wins[3])
    751      api.nvim_win_set_config(wins[2], { focusable = false })
    752      api.nvim_win_close(0, false)
    753      eq(firstwin, api.nvim_get_current_win())
    754      api.nvim_set_current_win(wins[1])
    755      api.nvim_set_current_win(wins[2])
    756      api.nvim_win_close(0, false)
    757      eq(wins[1], api.nvim_get_current_win())
    758    end)
    759  end)
    760 
    761  describe('hide', function()
    762    it('can hide current window', function()
    763      local oldwin = api.nvim_get_current_win()
    764      command('split')
    765      local newwin = api.nvim_get_current_win()
    766      api.nvim_win_hide(newwin)
    767      eq({ oldwin }, api.nvim_list_wins())
    768    end)
    769    it('can hide noncurrent window', function()
    770      local oldwin = api.nvim_get_current_win()
    771      command('split')
    772      local newwin = api.nvim_get_current_win()
    773      api.nvim_win_hide(oldwin)
    774      eq({ newwin }, api.nvim_list_wins())
    775    end)
    776    it('does not close the buffer', function()
    777      local oldwin = api.nvim_get_current_win()
    778      local oldbuf = api.nvim_get_current_buf()
    779      local buf = api.nvim_create_buf(true, false)
    780      local newwin = api.nvim_open_win(buf, true, {
    781        relative = 'win',
    782        row = 3,
    783        col = 3,
    784        width = 12,
    785        height = 3,
    786      })
    787      api.nvim_win_hide(newwin)
    788      eq({ oldwin }, api.nvim_list_wins())
    789      eq({ oldbuf, buf }, api.nvim_list_bufs())
    790    end)
    791    it('deletes the buffer when bufhidden=wipe', function()
    792      local oldwin = api.nvim_get_current_win()
    793      local oldbuf = api.nvim_get_current_buf()
    794      local buf = api.nvim_create_buf(true, false)
    795      local newwin = api.nvim_open_win(buf, true, {
    796        relative = 'win',
    797        row = 3,
    798        col = 3,
    799        width = 12,
    800        height = 3,
    801      })
    802      api.nvim_set_option_value('bufhidden', 'wipe', { buf = buf })
    803      api.nvim_win_hide(newwin)
    804      eq({ oldwin }, api.nvim_list_wins())
    805      eq({ oldbuf }, api.nvim_list_bufs())
    806    end)
    807    it('in the cmdwin', function()
    808      feed('q:')
    809      -- Can close the cmdwin.
    810      api.nvim_win_hide(0)
    811      eq('', fn.getcmdwintype())
    812 
    813      local old_buf = api.nvim_get_current_buf()
    814      local old_win = api.nvim_get_current_win()
    815      local other_win = api.nvim_open_win(0, false, {
    816        relative = 'win',
    817        row = 3,
    818        col = 3,
    819        width = 12,
    820        height = 3,
    821      })
    822      feed('q:')
    823      -- Cannot close the previous window.
    824      eq(
    825        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
    826        pcall_err(api.nvim_win_hide, old_win)
    827      )
    828      -- Can close other windows.
    829      api.nvim_win_hide(other_win)
    830      eq(false, api.nvim_win_is_valid(other_win))
    831 
    832      -- Closing curwin in context of a different window shouldn't close cmdwin.
    833      other_win = api.nvim_open_win(old_buf, false, {
    834        relative = 'editor',
    835        row = 10,
    836        col = 10,
    837        width = 10,
    838        height = 10,
    839      })
    840      exec_lua(
    841        [[
    842        vim._with({win = ...}, function()
    843          vim.api.nvim_win_hide(0)
    844        end)
    845      ]],
    846        other_win
    847      )
    848      eq(false, api.nvim_win_is_valid(other_win))
    849      eq(':', fn.getcmdwintype())
    850      -- Closing cmdwin in context of a non-previous window is still OK.
    851      other_win = api.nvim_open_win(old_buf, false, {
    852        relative = 'editor',
    853        row = 10,
    854        col = 10,
    855        width = 10,
    856        height = 10,
    857      })
    858      exec_lua(
    859        [[
    860        local otherwin, cmdwin = ...
    861        vim._with({win = otherwin}, function()
    862          vim.api.nvim_win_hide(cmdwin)
    863        end)
    864      ]],
    865        other_win,
    866        api.nvim_get_current_win()
    867      )
    868      eq('', fn.getcmdwintype())
    869      eq(true, api.nvim_win_is_valid(other_win))
    870    end)
    871  end)
    872 
    873  describe('text_height', function()
    874    local screen, ns, X
    875    before_each(function()
    876      screen = Screen.new(45, 22)
    877      ns = api.nvim_create_namespace('')
    878      X = api.nvim_get_vvar('maxcol')
    879    end)
    880 
    881    it('validation', function()
    882      insert([[
    883        aaa
    884        bbb
    885        ccc
    886        ddd
    887        eee]])
    888      eq('Invalid window id: 23', pcall_err(api.nvim_win_text_height, 23, {}))
    889      eq('Line index out of bounds', pcall_err(api.nvim_win_text_height, 0, { start_row = 5 }))
    890      eq('Line index out of bounds', pcall_err(api.nvim_win_text_height, 0, { start_row = -6 }))
    891      eq('Line index out of bounds', pcall_err(api.nvim_win_text_height, 0, { end_row = 5 }))
    892      eq('Line index out of bounds', pcall_err(api.nvim_win_text_height, 0, { end_row = -6 }))
    893      eq(
    894        "'start_row' is higher than 'end_row'",
    895        pcall_err(api.nvim_win_text_height, 0, { start_row = 3, end_row = 1 })
    896      )
    897      eq(
    898        "'start_vcol' specified without 'start_row'",
    899        pcall_err(api.nvim_win_text_height, 0, { end_row = 2, start_vcol = 0 })
    900      )
    901      eq(
    902        "'end_vcol' specified without 'end_row'",
    903        pcall_err(api.nvim_win_text_height, 0, { start_row = 2, end_vcol = 0 })
    904      )
    905      eq(
    906        "Invalid 'start_vcol': out of range",
    907        pcall_err(api.nvim_win_text_height, 0, { start_row = 2, start_vcol = -1 })
    908      )
    909      eq(
    910        "Invalid 'start_vcol': out of range",
    911        pcall_err(api.nvim_win_text_height, 0, { start_row = 2, start_vcol = X + 1 })
    912      )
    913      eq(
    914        "Invalid 'end_vcol': out of range",
    915        pcall_err(api.nvim_win_text_height, 0, { end_row = 2, end_vcol = -1 })
    916      )
    917      eq(
    918        "Invalid 'end_vcol': out of range",
    919        pcall_err(api.nvim_win_text_height, 0, { end_row = 2, end_vcol = X + 1 })
    920      )
    921      eq(
    922        "Invalid 'max_height': out of range",
    923        pcall_err(api.nvim_win_text_height, 0, { max_height = 0 })
    924      )
    925      eq(
    926        "'start_vcol' is higher than 'end_vcol'",
    927        pcall_err(
    928          api.nvim_win_text_height,
    929          0,
    930          { start_row = 2, end_row = 2, start_vcol = 10, end_vcol = 5 }
    931        )
    932      )
    933    end)
    934 
    935    it('with two diff windows', function()
    936      exec([[
    937        set diffopt+=context:2 number
    938        let expr = 'printf("%08d", v:val) .. repeat("!", v:val)'
    939        call setline(1, map(range(1, 20) + range(25, 45), expr))
    940        vnew
    941        call setline(1, map(range(3, 20) + range(28, 50), expr))
    942        windo diffthis
    943      ]])
    944      feed('24gg')
    945      screen:expect([[
    946        {7:  }{8:    }{23:----------------}│{7:  }{8:  1 }{22:00000001!       }|
    947        {7:  }{8:    }{23:----------------}│{7:  }{8:  2 }{22:00000002!!      }|
    948        {7:  }{8:  1 }00000003!!!     {7:  }{8:  3 }00000003!!!     |
    949        {7:  }{8:  2 }00000004!!!!    {7:  }{8:  4 }00000004!!!!    |
    950        {7:+ }{8:  3 }{13:+-- 14 lines: 00}│{7:+ }{8:  5 }{13:+-- 14 lines: 00}|
    951        {7:  }{8: 17 }00000019!!!!!!!!│{7:  }{8: 19 }00000019!!!!!!!!|
    952        {7:  }{8: 18 }00000020!!!!!!!!│{7:  }{8: 20 }00000020!!!!!!!!|
    953        {7:  }{8:    }{23:----------------}│{7:  }{8: 21 }{22:00000025!!!!!!!!}|
    954        {7:  }{8:    }{23:----------------}│{7:  }{8: 22 }{22:00000026!!!!!!!!}|
    955        {7:  }{8:    }{23:----------------}│{7:  }{8: 23 }{22:00000027!!!!!!!!}|
    956        {7:  }{8: 19 }00000028!!!!!!!!│{7:  }{8: 24 }^00000028!!!!!!!!|
    957        {7:  }{8: 20 }00000029!!!!!!!!│{7:  }{8: 25 }00000029!!!!!!!!|
    958        {7:+ }{8: 21 }{13:+-- 14 lines: 00}│{7:+ }{8: 26 }{13:+-- 14 lines: 00}|
    959        {7:  }{8: 35 }00000044!!!!!!!!│{7:  }{8: 40 }00000044!!!!!!!!|
    960        {7:  }{8: 36 }00000045!!!!!!!!│{7:  }{8: 41 }00000045!!!!!!!!|
    961        {7:  }{8: 37 }{22:00000046!!!!!!!!}│{7:  }{8:    }{23:----------------}|
    962        {7:  }{8: 38 }{22:00000047!!!!!!!!}│{7:  }{8:    }{23:----------------}|
    963        {7:  }{8: 39 }{22:00000048!!!!!!!!}│{7:  }{8:    }{23:----------------}|
    964        {7:  }{8: 40 }{22:00000049!!!!!!!!}│{7:  }{8:    }{23:----------------}|
    965        {7:  }{8: 41 }{22:00000050!!!!!!!!}│{7:  }{8:    }{23:----------------}|
    966        {2:[No Name] [+]          }{3:[No Name] [+]         }|
    967                                                     |
    968      ]])
    969      screen:try_resize(45, 3)
    970      screen:expect([[
    971        {7:  }{8: 19 }00000028!!!!!!!!│{7:  }{8: 24 }^00000028!!!!!!!!|
    972        {2:[No Name] [+]          }{3:[No Name] [+]         }|
    973                                                     |
    974      ]])
    975      eq({ all = 20, fill = 5, end_row = 40, end_vcol = 53 }, api.nvim_win_text_height(1000, {}))
    976      eq({ all = 20, fill = 5, end_row = 40, end_vcol = 58 }, api.nvim_win_text_height(1001, {}))
    977      eq(
    978        { all = 20, fill = 5, end_row = 40, end_vcol = 53 },
    979        api.nvim_win_text_height(1000, { start_row = 0 })
    980      )
    981      eq(
    982        { all = 20, fill = 5, end_row = 40, end_vcol = 58 },
    983        api.nvim_win_text_height(1001, { start_row = 0 })
    984      )
    985      eq(
    986        { all = 15, fill = 0, end_row = 40, end_vcol = 53 },
    987        api.nvim_win_text_height(1000, { end_row = -1 })
    988      )
    989      eq(
    990        { all = 15, fill = 0, end_row = 40, end_vcol = 53 },
    991        api.nvim_win_text_height(1000, { end_row = 40 })
    992      )
    993      eq(
    994        { all = 20, fill = 5, end_row = 40, end_vcol = 58 },
    995        api.nvim_win_text_height(1001, { end_row = -1 })
    996      )
    997      eq(
    998        { all = 20, fill = 5, end_row = 40, end_vcol = 58 },
    999        api.nvim_win_text_height(1001, { end_row = 40 })
   1000      )
   1001      eq(
   1002        { all = 10, fill = 5, end_row = 40, end_vcol = 53 },
   1003        api.nvim_win_text_height(1000, { start_row = 23 })
   1004      )
   1005      eq(
   1006        { all = 13, fill = 3, end_row = 40, end_vcol = 58 },
   1007        api.nvim_win_text_height(1001, { start_row = 18 })
   1008      )
   1009      eq(
   1010        { all = 11, fill = 0, end_row = 23, end_vcol = 36 },
   1011        api.nvim_win_text_height(1000, { end_row = 23 })
   1012      )
   1013      eq(
   1014        { all = 11, fill = 5, end_row = 18, end_vcol = 36 },
   1015        api.nvim_win_text_height(1001, { end_row = 18 })
   1016      )
   1017      eq(
   1018        { all = 11, fill = 0, end_row = 39, end_vcol = 52 },
   1019        api.nvim_win_text_height(1000, { start_row = 3, end_row = 39 })
   1020      )
   1021      eq(
   1022        { all = 11, fill = 3, end_row = 34, end_vcol = 52 },
   1023        api.nvim_win_text_height(1001, { start_row = 1, end_row = 34 })
   1024      )
   1025      eq(
   1026        { all = 9, fill = 0, end_row = 25, end_vcol = 0 },
   1027        api.nvim_win_text_height(1000, { start_row = 4, end_row = 38 })
   1028      )
   1029      eq(
   1030        { all = 9, fill = 3, end_row = 20, end_vcol = 0 },
   1031        api.nvim_win_text_height(1001, { start_row = 2, end_row = 33 })
   1032      )
   1033      eq(
   1034        { all = 9, fill = 0, end_row = 25, end_vcol = 0 },
   1035        api.nvim_win_text_height(1000, { start_row = 5, end_row = 37 })
   1036      )
   1037      eq(
   1038        { all = 9, fill = 3, end_row = 20, end_vcol = 0 },
   1039        api.nvim_win_text_height(1001, { start_row = 3, end_row = 32 })
   1040      )
   1041      eq(
   1042        { all = 9, fill = 0, end_row = 25, end_vcol = 0 },
   1043        api.nvim_win_text_height(1000, { start_row = 17, end_row = 25 })
   1044      )
   1045      eq(
   1046        { all = 9, fill = 3, end_row = 20, end_vcol = 0 },
   1047        api.nvim_win_text_height(1001, { start_row = 15, end_row = 20 })
   1048      )
   1049      eq(
   1050        { all = 7, fill = 0, end_row = 24, end_vcol = 37 },
   1051        api.nvim_win_text_height(1000, { start_row = 18, end_row = 24 })
   1052      )
   1053      eq(
   1054        { all = 7, fill = 3, end_row = 19, end_vcol = 37 },
   1055        api.nvim_win_text_height(1001, { start_row = 16, end_row = 19 })
   1056      )
   1057      eq(
   1058        { all = 6, fill = 5, end_row = 40, end_vcol = 53 },
   1059        api.nvim_win_text_height(1000, { start_row = -1 })
   1060      )
   1061      eq(
   1062        { all = 5, fill = 5, end_row = 40, end_vcol = 53 },
   1063        api.nvim_win_text_height(1000, { start_row = -1, start_vcol = X })
   1064      )
   1065      eq(
   1066        { all = 0, fill = 0, end_row = 40, end_vcol = 53 },
   1067        api.nvim_win_text_height(1000, { start_row = -1, start_vcol = X, end_row = -1 })
   1068      )
   1069      eq(
   1070        { all = 0, fill = 0, end_row = 40, end_vcol = 53 },
   1071        api.nvim_win_text_height(
   1072          1000,
   1073          { start_row = -1, start_vcol = X, end_row = -1, end_vcol = X }
   1074        )
   1075      )
   1076      eq(
   1077        { all = 1, fill = 0, end_row = 40, end_vcol = 53 },
   1078        api.nvim_win_text_height(
   1079          1000,
   1080          { start_row = -1, start_vcol = 0, end_row = -1, end_vcol = X }
   1081        )
   1082      )
   1083      eq(
   1084        { all = 3, fill = 2, end_row = 0, end_vcol = 11 },
   1085        api.nvim_win_text_height(1001, { end_row = 0 })
   1086      )
   1087      eq(
   1088        { all = 2, fill = 2, end_row = 0, end_vcol = 0 },
   1089        api.nvim_win_text_height(1001, { end_row = 0, end_vcol = 0 })
   1090      )
   1091      eq(
   1092        { all = 2, fill = 2, end_row = 0, end_vcol = 0 },
   1093        api.nvim_win_text_height(1001, { start_row = 0, end_row = 0, end_vcol = 0 })
   1094      )
   1095      eq(
   1096        { all = 0, fill = 0, end_row = 0, end_vcol = 0 },
   1097        api.nvim_win_text_height(1001, { start_row = 0, start_vcol = 0, end_row = 0, end_vcol = 0 })
   1098      )
   1099      eq(
   1100        { all = 1, fill = 0, end_row = 0, end_vcol = 11 },
   1101        api.nvim_win_text_height(1001, { start_row = 0, start_vcol = 0, end_row = 0, end_vcol = X })
   1102      )
   1103      eq(
   1104        { all = 11, fill = 5, end_row = 18, end_vcol = 36 },
   1105        api.nvim_win_text_height(1001, { end_row = 18 })
   1106      )
   1107      eq(
   1108        { all = 9, fill = 3, end_row = 18, end_vcol = 36 },
   1109        api.nvim_win_text_height(1001, { start_row = 0, start_vcol = 0, end_row = 18 })
   1110      )
   1111      eq(
   1112        { all = 10, fill = 5, end_row = 18, end_vcol = 0 },
   1113        api.nvim_win_text_height(1001, { end_row = 18, end_vcol = 0 })
   1114      )
   1115      eq(
   1116        { all = 8, fill = 3, end_row = 18, end_vcol = 0 },
   1117        api.nvim_win_text_height(
   1118          1001,
   1119          { start_row = 0, start_vcol = 0, end_row = 18, end_vcol = 0 }
   1120        )
   1121      )
   1122    end)
   1123 
   1124    it('with wrapped lines', function()
   1125      exec([[
   1126        set number cpoptions+=n
   1127        call setline(1, repeat([repeat('foobar-', 36)], 3))
   1128      ]])
   1129      api.nvim_buf_set_extmark(
   1130        0,
   1131        ns,
   1132        1,
   1133        100,
   1134        { virt_text = { { ('?'):rep(15), 'Search' } }, virt_text_pos = 'inline' }
   1135      )
   1136      api.nvim_buf_set_extmark(
   1137        0,
   1138        ns,
   1139        2,
   1140        200,
   1141        { virt_text = { { ('!'):rep(75), 'Search' } }, virt_text_pos = 'inline' }
   1142      )
   1143      screen:expect([[
   1144        {8:  1 }^foobar-foobar-foobar-foobar-foobar-foobar|
   1145        -foobar-foobar-foobar-foobar-foobar-foobar-fo|
   1146        obar-foobar-foobar-foobar-foobar-foobar-fooba|
   1147        r-foobar-foobar-foobar-foobar-foobar-foobar-f|
   1148        oobar-foobar-foobar-foobar-foobar-foobar-foob|
   1149        ar-foobar-foobar-foobar-foobar-              |
   1150        {8:  2 }foobar-foobar-foobar-foobar-foobar-foobar|
   1151        -foobar-foobar-foobar-foobar-foobar-foobar-fo|
   1152        obar-foobar-fo{10:???????????????}obar-foobar-foob|
   1153        ar-foobar-foobar-foobar-foobar-foobar-foobar-|
   1154        foobar-foobar-foobar-foobar-foobar-foobar-foo|
   1155        bar-foobar-foobar-foobar-foobar-foobar-foobar|
   1156        -                                            |
   1157        {8:  3 }foobar-foobar-foobar-foobar-foobar-foobar|
   1158        -foobar-foobar-foobar-foobar-foobar-foobar-fo|
   1159        obar-foobar-foobar-foobar-foobar-foobar-fooba|
   1160        r-foobar-foobar-foobar-foobar-foobar-foobar-f|
   1161        oobar-foobar-foobar-foob{10:!!!!!!!!!!!!!!!!!!!!!}|
   1162        {10:!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!}|
   1163        {10:!!!!!!!!!}ar-foobar-foobar-foobar-foobar-fooba|
   1164        r-foobar-foobar-                             |
   1165                                                     |
   1166      ]])
   1167      screen:try_resize(45, 2)
   1168      screen:expect([[
   1169        {8:  1 }^foobar-foobar-foobar-foobar-foobar-foobar|
   1170                                                     |
   1171      ]])
   1172      eq({ all = 21, fill = 0, end_row = 2, end_vcol = 327 }, api.nvim_win_text_height(0, {}))
   1173      eq(
   1174        { all = 6, fill = 0, end_row = 0, end_vcol = 252 },
   1175        api.nvim_win_text_height(0, { start_row = 0, end_row = 0 })
   1176      )
   1177      eq(
   1178        { all = 7, fill = 0, end_row = 1, end_vcol = 267 },
   1179        api.nvim_win_text_height(0, { start_row = 1, end_row = 1 })
   1180      )
   1181      eq(
   1182        { all = 8, fill = 0, end_row = 2, end_vcol = 327 },
   1183        api.nvim_win_text_height(0, { start_row = 2, end_row = 2 })
   1184      )
   1185      eq(
   1186        { all = 0, fill = 0, end_row = 1, end_vcol = 0 },
   1187        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 0, end_row = 1, end_vcol = 0 })
   1188      )
   1189      eq(
   1190        { all = 1, fill = 0, end_row = 1, end_vcol = 41 },
   1191        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 0, end_row = 1, end_vcol = 41 })
   1192      )
   1193      eq(
   1194        { all = 2, fill = 0, end_row = 1, end_vcol = 42 },
   1195        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 0, end_row = 1, end_vcol = 42 })
   1196      )
   1197      eq(
   1198        { all = 2, fill = 0, end_row = 1, end_vcol = 86 },
   1199        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 0, end_row = 1, end_vcol = 86 })
   1200      )
   1201      eq(
   1202        { all = 3, fill = 0, end_row = 1, end_vcol = 87 },
   1203        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 0, end_row = 1, end_vcol = 87 })
   1204      )
   1205      eq(
   1206        { all = 6, fill = 0, end_row = 1, end_vcol = 266 },
   1207        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 0, end_row = 1, end_vcol = 266 })
   1208      )
   1209      eq(
   1210        { all = 7, fill = 0, end_row = 1, end_vcol = 267 },
   1211        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 0, end_row = 1, end_vcol = 267 })
   1212      )
   1213      eq(
   1214        { all = 7, fill = 0, end_row = 1, end_vcol = 267 },
   1215        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 0, end_row = 1, end_vcol = 311 })
   1216      )
   1217      eq(
   1218        { all = 7, fill = 0, end_row = 1, end_vcol = 267 },
   1219        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 0, end_row = 1, end_vcol = 312 })
   1220      )
   1221      eq(
   1222        { all = 7, fill = 0, end_row = 1, end_vcol = 267 },
   1223        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 0, end_row = 1, end_vcol = X })
   1224      )
   1225      eq(
   1226        { all = 7, fill = 0, end_row = 1, end_vcol = 267 },
   1227        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 40, end_row = 1, end_vcol = X })
   1228      )
   1229      eq(
   1230        { all = 6, fill = 0, end_row = 1, end_vcol = 267 },
   1231        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 41, end_row = 1, end_vcol = X })
   1232      )
   1233      eq(
   1234        { all = 6, fill = 0, end_row = 1, end_vcol = 267 },
   1235        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 85, end_row = 1, end_vcol = X })
   1236      )
   1237      eq(
   1238        { all = 5, fill = 0, end_row = 1, end_vcol = 267 },
   1239        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 86, end_row = 1, end_vcol = X })
   1240      )
   1241      eq(
   1242        { all = 2, fill = 0, end_row = 1, end_vcol = 267 },
   1243        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 265, end_row = 1, end_vcol = X })
   1244      )
   1245      eq(
   1246        { all = 1, fill = 0, end_row = 1, end_vcol = 267 },
   1247        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 266, end_row = 1, end_vcol = X })
   1248      )
   1249      eq(
   1250        { all = 1, fill = 0, end_row = 1, end_vcol = 267 },
   1251        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 310, end_row = 1, end_vcol = X })
   1252      )
   1253      eq(
   1254        { all = 0, fill = 0, end_row = 1, end_vcol = 267 },
   1255        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 311, end_row = 1, end_vcol = X })
   1256      )
   1257      eq(
   1258        { all = 1, fill = 0, end_row = 1, end_vcol = 131 },
   1259        api.nvim_win_text_height(0, { start_row = 1, start_vcol = 86, end_row = 1, end_vcol = 131 })
   1260      )
   1261      eq(
   1262        { all = 1, fill = 0, end_row = 1, end_vcol = 266 },
   1263        api.nvim_win_text_height(
   1264          0,
   1265          { start_row = 1, start_vcol = 221, end_row = 1, end_vcol = 266 }
   1266        )
   1267      )
   1268      eq(
   1269        { all = 18, fill = 0, end_row = 2, end_vcol = 327 },
   1270        api.nvim_win_text_height(0, { start_row = 0, start_vcol = 131 })
   1271      )
   1272      eq(
   1273        { all = 19, fill = 0, end_row = 2, end_vcol = 327 },
   1274        api.nvim_win_text_height(0, { start_row = 0, start_vcol = 130 })
   1275      )
   1276      eq(
   1277        { all = 20, fill = 0, end_row = 2, end_vcol = 311 },
   1278        api.nvim_win_text_height(0, { end_row = 2, end_vcol = 311 })
   1279      )
   1280      eq(
   1281        { all = 21, fill = 0, end_row = 2, end_vcol = 312 },
   1282        api.nvim_win_text_height(0, { end_row = 2, end_vcol = 312 })
   1283      )
   1284      eq(
   1285        { all = 17, fill = 0, end_row = 2, end_vcol = 311 },
   1286        api.nvim_win_text_height(
   1287          0,
   1288          { start_row = 0, start_vcol = 131, end_row = 2, end_vcol = 311 }
   1289        )
   1290      )
   1291      eq(
   1292        { all = 19, fill = 0, end_row = 2, end_vcol = 312 },
   1293        api.nvim_win_text_height(
   1294          0,
   1295          { start_row = 0, start_vcol = 130, end_row = 2, end_vcol = 312 }
   1296        )
   1297      )
   1298      eq(
   1299        { all = 16, fill = 0, end_row = 2, end_vcol = 327 },
   1300        api.nvim_win_text_height(0, { start_row = 0, start_vcol = 221 })
   1301      )
   1302      eq(
   1303        { all = 17, fill = 0, end_row = 2, end_vcol = 327 },
   1304        api.nvim_win_text_height(0, { start_row = 0, start_vcol = 220 })
   1305      )
   1306      eq(
   1307        { all = 14, fill = 0, end_row = 2, end_vcol = 41 },
   1308        api.nvim_win_text_height(0, { end_row = 2, end_vcol = 41 })
   1309      )
   1310      eq(
   1311        { all = 15, fill = 0, end_row = 2, end_vcol = 42 },
   1312        api.nvim_win_text_height(0, { end_row = 2, end_vcol = 42 })
   1313      )
   1314      eq(
   1315        { all = 9, fill = 0, end_row = 2, end_vcol = 41 },
   1316        api.nvim_win_text_height(0, { start_row = 0, start_vcol = 221, end_row = 2, end_vcol = 41 })
   1317      )
   1318      eq(
   1319        { all = 11, fill = 0, end_row = 2, end_vcol = 42 },
   1320        api.nvim_win_text_height(0, { start_row = 0, start_vcol = 220, end_row = 2, end_vcol = 42 })
   1321      )
   1322      exec('call setline(1, "foo")')
   1323      eq(
   1324        { all = 1, fill = 0, end_row = 0, end_vcol = 3 },
   1325        api.nvim_win_text_height(0, { max_height = 1 })
   1326      )
   1327      eq(
   1328        { all = 8, fill = 0, end_row = 1, end_vcol = 41 },
   1329        api.nvim_win_text_height(0, { max_height = 2 })
   1330      )
   1331      eq(
   1332        { all = 2, fill = 0, end_row = 1, end_vcol = 1 },
   1333        api.nvim_win_text_height(0, { max_height = 2, end_row = 1, end_vcol = 1 })
   1334      )
   1335      eq(
   1336        { all = 8, fill = 0, end_row = 1, end_vcol = 41 },
   1337        api.nvim_win_text_height(0, { max_height = 2, end_row = 2, end_vcol = 1 })
   1338      )
   1339    end)
   1340 
   1341    it('with virtual lines around a fold', function()
   1342      screen:try_resize(45, 10)
   1343      exec([[
   1344        call setline(1, range(1, 8))
   1345        3,6fold
   1346      ]])
   1347      api.nvim_buf_set_extmark(
   1348        0,
   1349        ns,
   1350        1,
   1351        0,
   1352        { virt_lines = { { { 'VIRT LINE 1' } }, { { 'VIRT LINE 2' } } } }
   1353      )
   1354      api.nvim_buf_set_extmark(
   1355        0,
   1356        ns,
   1357        6,
   1358        0,
   1359        { virt_lines = { { { 'VIRT LINE 3' } } }, virt_lines_above = true }
   1360      )
   1361      screen:expect([[
   1362        ^1                                            |
   1363        2                                            |
   1364        VIRT LINE 1                                  |
   1365        VIRT LINE 2                                  |
   1366        {13:+--  4 lines: 3······························}|
   1367        VIRT LINE 3                                  |
   1368        7                                            |
   1369        8                                            |
   1370        {1:~                                            }|
   1371                                                     |
   1372      ]])
   1373      eq({ all = 8, fill = 3, end_row = 7, end_vcol = 1 }, api.nvim_win_text_height(0, {}))
   1374      eq(
   1375        { all = 5, fill = 2, end_row = 2, end_vcol = 0 },
   1376        api.nvim_win_text_height(0, { end_row = 2 })
   1377      )
   1378      eq(
   1379        { all = 5, fill = 2, end_row = 2, end_vcol = 0 },
   1380        api.nvim_win_text_height(0, { end_row = 2, end_vcol = X })
   1381      )
   1382      eq(
   1383        { all = 5, fill = 2, end_row = 2, end_vcol = 0 },
   1384        api.nvim_win_text_height(0, { end_row = 2, end_vcol = 90 })
   1385      )
   1386      eq(
   1387        { all = 5, fill = 2, end_row = 2, end_vcol = 0 },
   1388        api.nvim_win_text_height(0, { end_row = 2, end_vcol = 46 })
   1389      )
   1390      eq(
   1391        { all = 5, fill = 2, end_row = 2, end_vcol = 0 },
   1392        api.nvim_win_text_height(0, { end_row = 2, end_vcol = 45 })
   1393      )
   1394      eq(
   1395        { all = 5, fill = 2, end_row = 2, end_vcol = 0 },
   1396        api.nvim_win_text_height(0, { end_row = 2, end_vcol = 1 })
   1397      )
   1398      eq(
   1399        { all = 4, fill = 2, end_row = 2, end_vcol = 0 },
   1400        api.nvim_win_text_height(0, { end_row = 2, end_vcol = 0 })
   1401      )
   1402      eq(
   1403        { all = 6, fill = 3, end_row = 7, end_vcol = 1 },
   1404        api.nvim_win_text_height(0, { start_row = 2 })
   1405      )
   1406      eq(
   1407        { all = 4, fill = 1, end_row = 7, end_vcol = 1 },
   1408        api.nvim_win_text_height(0, { start_row = 2, start_vcol = 0 })
   1409      )
   1410      eq(
   1411        { all = 4, fill = 1, end_row = 7, end_vcol = 1 },
   1412        api.nvim_win_text_height(0, { start_row = 2, start_vcol = 44 })
   1413      )
   1414      eq(
   1415        { all = 3, fill = 1, end_row = 7, end_vcol = 1 },
   1416        api.nvim_win_text_height(0, { start_row = 2, start_vcol = 45 })
   1417      )
   1418      eq(
   1419        { all = 3, fill = 1, end_row = 7, end_vcol = 1 },
   1420        api.nvim_win_text_height(0, { start_row = 2, start_vcol = 89 })
   1421      )
   1422      eq(
   1423        { all = 3, fill = 1, end_row = 7, end_vcol = 1 },
   1424        api.nvim_win_text_height(0, { start_row = 2, start_vcol = 90 })
   1425      )
   1426      eq(
   1427        { all = 3, fill = 1, end_row = 7, end_vcol = 1 },
   1428        api.nvim_win_text_height(0, { start_row = 2, start_vcol = X })
   1429      )
   1430    end)
   1431 
   1432    it('with virt_lines above max_height row', function()
   1433      screen:try_resize(45, 10)
   1434      exec('call setline(1, range(1, 7) + ["foo"->repeat(20)])')
   1435      api.nvim_buf_set_extmark(0, ns, 6, 0, { virt_lines = { { { 'VIRT LINE 1' } } } })
   1436      screen:expect([[
   1437        ^1                                            |
   1438        2                                            |
   1439        3                                            |
   1440        4                                            |
   1441        5                                            |
   1442        6                                            |
   1443        7                                            |
   1444        VIRT LINE 1                                  |
   1445        foofoofoofoofoofoofoofoofoofoofoofoofoofoo{1:@@@}|
   1446                                                     |
   1447      ]])
   1448      eq(
   1449        { all = 10, fill = 1, end_row = 7, end_vcol = 45 },
   1450        api.nvim_win_text_height(0, { max_height = api.nvim_win_get_height(0) })
   1451      )
   1452    end)
   1453  end)
   1454 
   1455  describe('open_win', function()
   1456    it('disallowed in cmdwin if enter=true or buf=cmdwin_buf', function()
   1457      local new_buf = api.nvim_create_buf(true, true)
   1458      feed('q:')
   1459      eq(
   1460        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
   1461        pcall_err(api.nvim_open_win, new_buf, true, {
   1462          relative = 'editor',
   1463          row = 5,
   1464          col = 5,
   1465          width = 5,
   1466          height = 5,
   1467        })
   1468      )
   1469      eq(
   1470        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
   1471        pcall_err(api.nvim_open_win, 0, false, {
   1472          relative = 'editor',
   1473          row = 5,
   1474          col = 5,
   1475          width = 5,
   1476          height = 5,
   1477        })
   1478      )
   1479      matches(
   1480        'E11: Invalid in command%-line window; <CR> executes, CTRL%-C quits$',
   1481        pcall_err(
   1482          exec_lua,
   1483          [[
   1484           local cmdwin_buf = vim.api.nvim_get_current_buf()
   1485           vim._with({buf = vim.api.nvim_create_buf(false, true)}, function()
   1486             vim.api.nvim_open_win(cmdwin_buf, false, {
   1487               relative='editor', row=5, col=5, width=5, height=5,
   1488             })
   1489           end)
   1490         ]]
   1491        )
   1492      )
   1493 
   1494      eq(
   1495        new_buf,
   1496        api.nvim_win_get_buf(api.nvim_open_win(new_buf, false, {
   1497          relative = 'editor',
   1498          row = 5,
   1499          col = 5,
   1500          width = 5,
   1501          height = 5,
   1502        }))
   1503      )
   1504    end)
   1505 
   1506    it('aborts if buffer is invalid', function()
   1507      local wins_before = api.nvim_list_wins()
   1508      eq(
   1509        'Invalid buffer id: 1337',
   1510        pcall_err(api.nvim_open_win, 1337, false, {
   1511          relative = 'editor',
   1512          row = 5,
   1513          col = 5,
   1514          width = 5,
   1515          height = 5,
   1516        })
   1517      )
   1518      eq(wins_before, api.nvim_list_wins())
   1519    end)
   1520 
   1521    describe('creates a split window above', function()
   1522      local function test_open_win_split_above(key, val)
   1523        local initial_win = api.nvim_get_current_win()
   1524        local win = api.nvim_open_win(0, true, {
   1525          [key] = val,
   1526          height = 10,
   1527        })
   1528        eq('', api.nvim_win_get_config(win).relative)
   1529        eq(10, api.nvim_win_get_height(win))
   1530        local layout = fn.winlayout()
   1531        eq({
   1532          'col',
   1533          {
   1534            { 'leaf', win },
   1535            { 'leaf', initial_win },
   1536          },
   1537        }, layout)
   1538      end
   1539 
   1540      it("with split = 'above'", function()
   1541        test_open_win_split_above('split', 'above')
   1542      end)
   1543 
   1544      it("with vertical = false and 'nosplitbelow'", function()
   1545        api.nvim_set_option_value('splitbelow', false, {})
   1546        test_open_win_split_above('vertical', false)
   1547      end)
   1548    end)
   1549 
   1550    describe('creates a split window below', function()
   1551      local function test_open_win_split_below(key, val)
   1552        local initial_win = api.nvim_get_current_win()
   1553        local win = api.nvim_open_win(0, true, {
   1554          [key] = val,
   1555          height = 15,
   1556        })
   1557        eq('', api.nvim_win_get_config(win).relative)
   1558        eq(15, api.nvim_win_get_height(win))
   1559        local layout = fn.winlayout()
   1560        eq({
   1561          'col',
   1562          {
   1563            { 'leaf', initial_win },
   1564            { 'leaf', win },
   1565          },
   1566        }, layout)
   1567      end
   1568 
   1569      it("with split = 'below'", function()
   1570        test_open_win_split_below('split', 'below')
   1571      end)
   1572 
   1573      it("with vertical = false and 'splitbelow'", function()
   1574        api.nvim_set_option_value('splitbelow', true, {})
   1575        test_open_win_split_below('vertical', false)
   1576      end)
   1577    end)
   1578 
   1579    describe('creates a split window to the left', function()
   1580      local function test_open_win_split_left(key, val)
   1581        local initial_win = api.nvim_get_current_win()
   1582        local win = api.nvim_open_win(0, true, {
   1583          [key] = val,
   1584          width = 25,
   1585        })
   1586        eq('', api.nvim_win_get_config(win).relative)
   1587        eq(25, api.nvim_win_get_width(win))
   1588        local layout = fn.winlayout()
   1589        eq({
   1590          'row',
   1591          {
   1592            { 'leaf', win },
   1593            { 'leaf', initial_win },
   1594          },
   1595        }, layout)
   1596      end
   1597 
   1598      it("with split = 'left'", function()
   1599        test_open_win_split_left('split', 'left')
   1600      end)
   1601 
   1602      it("with vertical = true and 'nosplitright'", function()
   1603        api.nvim_set_option_value('splitright', false, {})
   1604        test_open_win_split_left('vertical', true)
   1605      end)
   1606    end)
   1607 
   1608    describe('creates a split window to the right', function()
   1609      local function test_open_win_split_right(key, val)
   1610        local initial_win = api.nvim_get_current_win()
   1611        local win = api.nvim_open_win(0, true, {
   1612          [key] = val,
   1613          width = 30,
   1614        })
   1615        eq('', api.nvim_win_get_config(win).relative)
   1616        eq(30, api.nvim_win_get_width(win))
   1617        local layout = fn.winlayout()
   1618        eq({
   1619          'row',
   1620          {
   1621            { 'leaf', initial_win },
   1622            { 'leaf', win },
   1623          },
   1624        }, layout)
   1625      end
   1626 
   1627      it("with split = 'right'", function()
   1628        test_open_win_split_right('split', 'right')
   1629      end)
   1630 
   1631      it("with vertical = true and 'splitright'", function()
   1632        api.nvim_set_option_value('splitright', true, {})
   1633        test_open_win_split_right('vertical', true)
   1634      end)
   1635    end)
   1636 
   1637    it("doesn't change tp_curwin when splitting window in another tab with enter=false", function()
   1638      local tab1 = api.nvim_get_current_tabpage()
   1639      local tab1_win = api.nvim_get_current_win()
   1640 
   1641      n.command('tabnew')
   1642      local tab2 = api.nvim_get_current_tabpage()
   1643      local tab2_win = api.nvim_get_current_win()
   1644 
   1645      eq({ tab1_win, tab2_win }, api.nvim_list_wins())
   1646      eq({ tab1, tab2 }, api.nvim_list_tabpages())
   1647 
   1648      api.nvim_set_current_tabpage(tab1)
   1649      eq(tab1_win, api.nvim_get_current_win())
   1650 
   1651      local tab2_prevwin = fn.tabpagewinnr(tab2, '#')
   1652 
   1653      -- split in tab2 whine in tab2, with enter = false
   1654      local tab2_win2 = api.nvim_open_win(api.nvim_create_buf(false, true), false, {
   1655        win = tab2_win,
   1656        split = 'right',
   1657      })
   1658      eq(tab1_win, api.nvim_get_current_win()) -- we should still be in the first tp
   1659      eq(tab1_win, api.nvim_tabpage_get_win(tab1))
   1660 
   1661      eq(tab2_win, api.nvim_tabpage_get_win(tab2)) -- tab2's tp_curwin should not have changed
   1662      eq(tab2_prevwin, fn.tabpagewinnr(tab2, '#')) -- tab2's tp_prevwin should not have changed
   1663      eq({ tab1_win, tab2_win, tab2_win2 }, api.nvim_list_wins())
   1664      eq({ tab2_win, tab2_win2 }, api.nvim_tabpage_list_wins(tab2))
   1665    end)
   1666 
   1667    it('creates splits in the correct location', function()
   1668      local first_win = api.nvim_get_current_win()
   1669      -- specifying window 0 should create a split next to the current window
   1670      local win = api.nvim_open_win(0, true, {
   1671        vertical = false,
   1672      })
   1673      local layout = fn.winlayout()
   1674      eq({
   1675        'col',
   1676        {
   1677          { 'leaf', win },
   1678          { 'leaf', first_win },
   1679        },
   1680      }, layout)
   1681      -- not specifying a window should create a top-level split
   1682      local win2 = api.nvim_open_win(0, true, {
   1683        split = 'left',
   1684        win = -1,
   1685      })
   1686      layout = fn.winlayout()
   1687      eq({
   1688        'row',
   1689        {
   1690          { 'leaf', win2 },
   1691          {
   1692            'col',
   1693            {
   1694              { 'leaf', win },
   1695              { 'leaf', first_win },
   1696            },
   1697          },
   1698        },
   1699      }, layout)
   1700 
   1701      -- specifying a window should create a split next to that window
   1702      local win3 = api.nvim_open_win(0, true, {
   1703        win = win,
   1704        vertical = false,
   1705      })
   1706      layout = fn.winlayout()
   1707      eq({
   1708        'row',
   1709        {
   1710          { 'leaf', win2 },
   1711          {
   1712            'col',
   1713            {
   1714              { 'leaf', win3 },
   1715              { 'leaf', win },
   1716              { 'leaf', first_win },
   1717            },
   1718          },
   1719        },
   1720      }, layout)
   1721    end)
   1722 
   1723    it('opens floating windows in other tabpages', function()
   1724      local first_win = api.nvim_get_current_win()
   1725      local first_tab = api.nvim_get_current_tabpage()
   1726 
   1727      command('tabnew')
   1728      local new_tab = api.nvim_get_current_tabpage()
   1729      local win = api.nvim_open_win(0, false, {
   1730        relative = 'win',
   1731        win = first_win,
   1732        width = 5,
   1733        height = 5,
   1734        row = 1,
   1735        col = 1,
   1736      })
   1737      eq(api.nvim_win_get_tabpage(win), first_tab)
   1738      eq(api.nvim_get_current_tabpage(), new_tab)
   1739    end)
   1740 
   1741    it('switches to new windows in non-current tabpages when enter=true', function()
   1742      local first_win = api.nvim_get_current_win()
   1743      local first_tab = api.nvim_get_current_tabpage()
   1744      command('tabnew')
   1745      local win = api.nvim_open_win(0, true, {
   1746        relative = 'win',
   1747        win = first_win,
   1748        width = 5,
   1749        height = 5,
   1750        row = 1,
   1751        col = 1,
   1752      })
   1753      eq(api.nvim_win_get_tabpage(win), first_tab)
   1754      eq(api.nvim_get_current_tabpage(), first_tab)
   1755    end)
   1756 
   1757    local function setup_tabbed_autocmd_test()
   1758      local info = {}
   1759      info.orig_buf = api.nvim_get_current_buf()
   1760      info.other_buf = api.nvim_create_buf(true, true)
   1761      info.tab1_curwin = api.nvim_get_current_win()
   1762      info.tab1 = api.nvim_get_current_tabpage()
   1763      command('tab split | split')
   1764      info.tab2_curwin = api.nvim_get_current_win()
   1765      info.tab2 = api.nvim_get_current_tabpage()
   1766      exec([=[
   1767        tabfirst
   1768        let result = []
   1769        autocmd TabEnter * let result += [["TabEnter", nvim_get_current_tabpage()]]
   1770        autocmd TabLeave * let result += [["TabLeave", nvim_get_current_tabpage()]]
   1771        autocmd WinEnter * let result += [["WinEnter", win_getid()]]
   1772        autocmd WinLeave * let result += [["WinLeave", win_getid()]]
   1773        autocmd WinNew * let result += [["WinNew", win_getid()]]
   1774        autocmd WinClosed * let result += [["WinClosed", str2nr(expand("<afile>"))]]
   1775        autocmd BufEnter * let result += [["BufEnter", win_getid(), bufnr()]]
   1776        autocmd BufLeave * let result += [["BufLeave", win_getid(), bufnr()]]
   1777        autocmd BufWinEnter * let result += [["BufWinEnter", win_getid(), bufnr()]]
   1778        autocmd BufWinLeave * let result += [["BufWinLeave", win_getid(), bufnr()]]
   1779      ]=])
   1780      return info
   1781    end
   1782 
   1783    it('noautocmd option works', function()
   1784      local info = setup_tabbed_autocmd_test()
   1785 
   1786      api.nvim_open_win(
   1787        info.other_buf,
   1788        true,
   1789        { split = 'left', win = info.tab2_curwin, noautocmd = true }
   1790      )
   1791      eq({}, eval('result'))
   1792 
   1793      api.nvim_open_win(
   1794        info.orig_buf,
   1795        true,
   1796        { relative = 'editor', row = 0, col = 0, width = 10, height = 10, noautocmd = true }
   1797      )
   1798      eq({}, eval('result'))
   1799    end)
   1800 
   1801    it('fires expected autocmds when creating splits without entering', function()
   1802      local info = setup_tabbed_autocmd_test()
   1803 
   1804      -- For these, don't want BufWinEnter if visiting the same buffer, like :{s}buffer.
   1805      -- Same tabpage, same buffer.
   1806      local new_win = api.nvim_open_win(0, false, { split = 'left', win = info.tab1_curwin })
   1807      eq({
   1808        { 'WinNew', new_win },
   1809      }, eval('result'))
   1810      eq(info.tab1_curwin, api.nvim_get_current_win())
   1811 
   1812      -- Other tabpage, same buffer.
   1813      command('let result = []')
   1814      new_win = api.nvim_open_win(0, false, { split = 'left', win = info.tab2_curwin })
   1815      eq({
   1816        { 'WinNew', new_win },
   1817      }, eval('result'))
   1818      eq(info.tab1_curwin, api.nvim_get_current_win())
   1819 
   1820      -- Same tabpage, other buffer.
   1821      command('let result = []')
   1822      new_win = api.nvim_open_win(info.other_buf, false, { split = 'left', win = info.tab1_curwin })
   1823      eq({
   1824        { 'WinNew', new_win },
   1825        { 'BufWinEnter', new_win, info.other_buf },
   1826      }, eval('result'))
   1827      eq(info.tab1_curwin, api.nvim_get_current_win())
   1828 
   1829      -- Other tabpage, other buffer.
   1830      command('let result = []')
   1831      new_win = api.nvim_open_win(info.other_buf, false, { split = 'left', win = info.tab2_curwin })
   1832      eq({
   1833        { 'WinNew', new_win },
   1834        { 'BufWinEnter', new_win, info.other_buf },
   1835      }, eval('result'))
   1836      eq(info.tab1_curwin, api.nvim_get_current_win())
   1837    end)
   1838 
   1839    it('fires expected autocmds when creating and entering splits', function()
   1840      local info = setup_tabbed_autocmd_test()
   1841 
   1842      -- Same tabpage, same buffer.
   1843      local new_win = api.nvim_open_win(0, true, { split = 'left', win = info.tab1_curwin })
   1844      eq({
   1845        { 'WinNew', new_win },
   1846        { 'WinLeave', info.tab1_curwin },
   1847        { 'WinEnter', new_win },
   1848      }, eval('result'))
   1849 
   1850      -- Same tabpage, other buffer.
   1851      api.nvim_set_current_win(info.tab1_curwin)
   1852      command('let result = []')
   1853      new_win = api.nvim_open_win(info.other_buf, true, { split = 'left', win = info.tab1_curwin })
   1854      eq({
   1855        { 'WinNew', new_win },
   1856        { 'WinLeave', info.tab1_curwin },
   1857        { 'WinEnter', new_win },
   1858        { 'BufLeave', new_win, info.orig_buf },
   1859        { 'BufEnter', new_win, info.other_buf },
   1860        { 'BufWinEnter', new_win, info.other_buf },
   1861      }, eval('result'))
   1862 
   1863      -- For these, the other tabpage's prevwin and curwin will change like we switched from its old
   1864      -- curwin to the new window, so the extra events near TabEnter reflect that.
   1865      -- Other tabpage, same buffer.
   1866      api.nvim_set_current_win(info.tab1_curwin)
   1867      command('let result = []')
   1868      new_win = api.nvim_open_win(0, true, { split = 'left', win = info.tab2_curwin })
   1869      eq({
   1870        { 'WinNew', new_win },
   1871        { 'WinLeave', info.tab1_curwin },
   1872        { 'TabLeave', info.tab1 },
   1873 
   1874        { 'WinEnter', info.tab2_curwin },
   1875        { 'TabEnter', info.tab2 },
   1876        { 'WinLeave', info.tab2_curwin },
   1877        { 'WinEnter', new_win },
   1878      }, eval('result'))
   1879 
   1880      -- Other tabpage, other buffer.
   1881      api.nvim_set_current_win(info.tab2_curwin)
   1882      api.nvim_set_current_win(info.tab1_curwin)
   1883      command('let result = []')
   1884      new_win = api.nvim_open_win(info.other_buf, true, { split = 'left', win = info.tab2_curwin })
   1885      eq({
   1886        { 'WinNew', new_win },
   1887        { 'WinLeave', info.tab1_curwin },
   1888        { 'TabLeave', info.tab1 },
   1889 
   1890        { 'WinEnter', info.tab2_curwin },
   1891        { 'TabEnter', info.tab2 },
   1892        { 'WinLeave', info.tab2_curwin },
   1893        { 'WinEnter', new_win },
   1894 
   1895        { 'BufLeave', new_win, info.orig_buf },
   1896        { 'BufEnter', new_win, info.other_buf },
   1897        { 'BufWinEnter', new_win, info.other_buf },
   1898      }, eval('result'))
   1899 
   1900      -- Other tabpage, other buffer; but other tabpage's curwin has a new buffer active.
   1901      api.nvim_set_current_win(info.tab2_curwin)
   1902      local new_buf = api.nvim_create_buf(true, true)
   1903      api.nvim_set_current_buf(new_buf)
   1904      api.nvim_set_current_win(info.tab1_curwin)
   1905      command('let result = []')
   1906      new_win = api.nvim_open_win(info.other_buf, true, { split = 'left', win = info.tab2_curwin })
   1907      eq({
   1908        { 'WinNew', new_win },
   1909        { 'BufLeave', info.tab1_curwin, info.orig_buf },
   1910        { 'WinLeave', info.tab1_curwin },
   1911        { 'TabLeave', info.tab1 },
   1912 
   1913        { 'WinEnter', info.tab2_curwin },
   1914        { 'TabEnter', info.tab2 },
   1915        { 'BufEnter', info.tab2_curwin, new_buf },
   1916        { 'WinLeave', info.tab2_curwin },
   1917        { 'WinEnter', new_win },
   1918        { 'BufLeave', new_win, new_buf },
   1919        { 'BufEnter', new_win, info.other_buf },
   1920        { 'BufWinEnter', new_win, info.other_buf },
   1921      }, eval('result'))
   1922    end)
   1923 
   1924    it('OK when new window is moved to other tabpage by autocommands', function()
   1925      -- Use nvim_win_set_config in the autocommands, as other methods of moving a window to a
   1926      -- different tabpage (e.g: wincmd T) actually creates a new window.
   1927      local tab0 = api.nvim_get_current_tabpage()
   1928      local tab0_win = api.nvim_get_current_win()
   1929      command('tabnew')
   1930      local new_buf = api.nvim_create_buf(true, true)
   1931      local tab1 = api.nvim_get_current_tabpage()
   1932      local tab1_parent = api.nvim_get_current_win()
   1933      command(
   1934        'tabfirst | autocmd WinNew * ++once call nvim_win_set_config(0, #{split: "left", win: '
   1935          .. tab1_parent
   1936          .. '})'
   1937      )
   1938      local new_win = api.nvim_open_win(new_buf, true, { split = 'left' })
   1939      eq(tab1, api.nvim_get_current_tabpage())
   1940      eq(new_win, api.nvim_get_current_win())
   1941      eq(new_buf, api.nvim_get_current_buf())
   1942 
   1943      -- nvim_win_set_config called after entering. It doesn't follow a curwin that is moved to a
   1944      -- different tabpage, but instead moves to the win filling the space, which is tab0_win.
   1945      command(
   1946        'tabfirst | autocmd WinEnter * ++once call nvim_win_set_config(0, #{split: "left", win: '
   1947          .. tab1_parent
   1948          .. '})'
   1949      )
   1950      new_win = api.nvim_open_win(new_buf, true, { split = 'left' })
   1951      eq(tab0, api.nvim_get_current_tabpage())
   1952      eq(tab0_win, api.nvim_get_current_win())
   1953      eq(tab1, api.nvim_win_get_tabpage(new_win))
   1954      eq(new_buf, api.nvim_win_get_buf(new_win))
   1955 
   1956      command(
   1957        'tabfirst | autocmd BufEnter * ++once call nvim_win_set_config(0, #{split: "left", win: '
   1958          .. tab1_parent
   1959          .. '})'
   1960      )
   1961      new_win = api.nvim_open_win(new_buf, true, { split = 'left' })
   1962      eq(tab0, api.nvim_get_current_tabpage())
   1963      eq(tab0_win, api.nvim_get_current_win())
   1964      eq(tab1, api.nvim_win_get_tabpage(new_win))
   1965      eq(new_buf, api.nvim_win_get_buf(new_win))
   1966    end)
   1967 
   1968    it('does not fire BufWinEnter if win_set_buf fails', function()
   1969      exec([[
   1970        set nohidden modified
   1971        autocmd WinNew * ++once only!
   1972        let fired = v:false
   1973        autocmd BufWinEnter * ++once let fired = v:true
   1974      ]])
   1975      eq(
   1976        'Vim:E37: No write since last change (add ! to override)',
   1977        pcall_err(api.nvim_open_win, api.nvim_create_buf(true, true), false, { split = 'left' })
   1978      )
   1979      eq(false, eval('fired'))
   1980    end)
   1981 
   1982    it('fires Buf* autocommands when `!enter` if window is entered via autocommands', function()
   1983      exec([[
   1984        autocmd WinNew * ++once only!
   1985        let fired = v:false
   1986        autocmd BufEnter * ++once let fired = v:true
   1987      ]])
   1988      api.nvim_open_win(api.nvim_create_buf(true, true), false, { split = 'left' })
   1989      eq(true, eval('fired'))
   1990    end)
   1991 
   1992    it('no heap-use-after-free if target buffer deleted by autocommands', function()
   1993      local cur_buf = api.nvim_get_current_buf()
   1994      local new_buf = api.nvim_create_buf(true, true)
   1995      command('autocmd WinNew * ++once call nvim_buf_delete(' .. new_buf .. ', #{force: 1})')
   1996      api.nvim_open_win(new_buf, true, { split = 'left' })
   1997      eq(cur_buf, api.nvim_get_current_buf())
   1998    end)
   1999 
   2000    it('checks if splitting disallowed', function()
   2001      command('split | autocmd WinEnter * ++once call nvim_open_win(0, 0, #{split: "right"})')
   2002      matches("E242: Can't split a window while closing another$", pcall_err(command, 'quit'))
   2003      -- E242 is not needed for floats.
   2004      exec([[
   2005        split
   2006        autocmd WinEnter * ++once let g:win = nvim_open_win(0, 0, #{relative: "editor", row: 0, col: 0, width: 5, height: 5})
   2007        quit
   2008      ]])
   2009      eq('editor', eval('nvim_win_get_config(g:win).relative'))
   2010 
   2011      command('only | autocmd BufHidden * ++once call nvim_open_win(0, 0, #{split: "left"})')
   2012      matches(
   2013        'E1159: Cannot split a window when closing the buffer$',
   2014        pcall_err(command, 'new | quit')
   2015      )
   2016 
   2017      local w = api.nvim_get_current_win()
   2018      command(
   2019        'only | new | autocmd BufHidden * ++once call nvim_open_win(0, 0, #{split: "left", win: '
   2020          .. w
   2021          .. '})'
   2022      )
   2023      matches(
   2024        'E1159: Cannot split a window when closing the buffer$',
   2025        pcall_err(api.nvim_win_close, w, true)
   2026      )
   2027 
   2028      -- OK when using a buffer that isn't closing.
   2029      w = api.nvim_get_current_win()
   2030      command(
   2031        'only | autocmd BufHidden * ++once call nvim_open_win(bufnr("#"), 0, #{split: "left", win: '
   2032          .. w
   2033          .. '})'
   2034      )
   2035      command('new | quit')
   2036 
   2037      -- Apply to opening floats too, as that can similarly create new views into a closing buffer.
   2038      -- For example, the following would open a float into an unloaded buffer:
   2039      exec([[
   2040        only
   2041        new
   2042        let g:buf = bufnr()
   2043        autocmd BufUnload * ++once call nvim_open_win(g:buf, 0, #{relative: "editor", width: 5, height: 5, row: 1, col: 1})
   2044        setlocal bufhidden=unload
   2045      ]])
   2046      matches('E1159: Cannot open a float when closing the buffer$', pcall_err(command, 'quit'))
   2047      eq(false, eval('nvim_buf_is_loaded(g:buf)'))
   2048      eq(0, eval('win_findbuf(g:buf)->len()'))
   2049 
   2050      -- Only checking b_locked_split for the target buffer is insufficient, as naughty autocommands
   2051      -- can cause win_set_buf to remain in a closing curbuf:
   2052      exec([[
   2053        only
   2054        new
   2055        let g:buf = bufnr()
   2056        autocmd BufWipeout * ++once ++nested let g:buf2 = nvim_create_buf(1, 0)
   2057              \| execute 'autocmd BufLeave * ++once call nvim_buf_delete(g:buf2, #{force: 1})'
   2058              \| setlocal bufhidden=
   2059              \| call nvim_open_win(g:buf2, 1, #{relative: 'editor', width: 5, height: 5, col: 5, row: 5})
   2060        setlocal bufhidden=wipe
   2061      ]])
   2062      matches('E1159: Cannot open a float when closing the buffer$', pcall_err(command, 'quit'))
   2063      eq(false, eval('nvim_buf_is_loaded(g:buf)'))
   2064      eq(0, eval('win_findbuf(g:buf)->len()'))
   2065      -- BufLeave shouldn't run here (buf2 isn't deleted and remains hidden)
   2066      eq(true, eval('nvim_buf_is_loaded(g:buf2)'))
   2067      eq(0, eval('win_findbuf(g:buf2)->len()'))
   2068    end)
   2069 
   2070    it('restores last known cursor position if BufWinEnter did not move it', function()
   2071      -- This test mostly exists to ensure BufWinEnter is executed before enter_buffer's epilogue.
   2072      local buf = api.nvim_get_current_buf()
   2073      insert([[
   2074        foo
   2075        bar baz .etc
   2076        i love autocommand bugs!
   2077        supercalifragilisticexpialidocious
   2078        marvim is actually a human
   2079        llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch
   2080      ]])
   2081      api.nvim_win_set_cursor(0, { 5, 2 })
   2082      command('set nostartofline | enew')
   2083      local new_win = api.nvim_open_win(buf, false, { split = 'left' })
   2084      eq({ 5, 2 }, api.nvim_win_get_cursor(new_win))
   2085 
   2086      exec([[
   2087        only!
   2088        autocmd BufWinEnter * ++once normal! j6l
   2089      ]])
   2090      new_win = api.nvim_open_win(buf, false, { split = 'left' })
   2091      eq({ 2, 6 }, api.nvim_win_get_cursor(new_win))
   2092    end)
   2093 
   2094    it('does not block all win_set_buf autocommands if !enter and !noautocmd', function()
   2095      local new_buf = fn.bufadd('foobarbaz')
   2096      exec([[
   2097        let triggered = ""
   2098        autocmd BufReadCmd * ++once let triggered = bufname()
   2099      ]])
   2100      api.nvim_open_win(new_buf, false, { split = 'left' })
   2101      eq('foobarbaz', eval('triggered'))
   2102    end)
   2103 
   2104    it('sets error when no room', function()
   2105      matches('E36: Not enough room$', pcall_err(command, 'execute "split|"->repeat(&lines)'))
   2106      matches(
   2107        'E36: Not enough room$',
   2108        pcall_err(api.nvim_open_win, 0, true, { split = 'above', win = 0 })
   2109      )
   2110      matches(
   2111        'E36: Not enough room$',
   2112        pcall_err(api.nvim_open_win, 0, true, { split = 'below', win = 0 })
   2113      )
   2114    end)
   2115 
   2116    it("can create split window when 'winborder' is set", function()
   2117      local old_win = api.nvim_get_current_win()
   2118      api.nvim_set_option_value('winborder', 'single', {})
   2119      local new_win = api.nvim_open_win(0, false, { split = 'right', win = 0 })
   2120      eq({ 'row', { { 'leaf', old_win }, { 'leaf', new_win } } }, fn.winlayout())
   2121      eq('', api.nvim_win_get_config(new_win).relative)
   2122    end)
   2123 
   2124    describe("with 'autochdir'", function()
   2125      local topdir
   2126      local otherbuf
   2127 
   2128      before_each(function()
   2129        command('set shellslash')
   2130        topdir = fn.getcwd()
   2131        t.mkdir(topdir .. '/Xacd')
   2132        t.mkdir(topdir .. '/Xacd/foo')
   2133        otherbuf = api.nvim_create_buf(false, true)
   2134        api.nvim_buf_set_name(otherbuf, topdir .. '/Xacd/baz.txt')
   2135 
   2136        command('set autochdir')
   2137        command('edit Xacd/foo/bar.txt')
   2138        eq(topdir .. '/Xacd/foo', fn.getcwd())
   2139      end)
   2140 
   2141      after_each(function()
   2142        n.rmdir(topdir .. '/Xacd')
   2143      end)
   2144 
   2145      it('does not change cwd with enter=false #15280', function()
   2146        api.nvim_open_win(
   2147          otherbuf,
   2148          false,
   2149          { relative = 'editor', height = 5, width = 5, row = 5, col = 5 }
   2150        )
   2151        eq(topdir .. '/Xacd/foo', fn.getcwd())
   2152      end)
   2153 
   2154      it('changes cwd with enter=true', function()
   2155        api.nvim_open_win(
   2156          otherbuf,
   2157          true,
   2158          { relative = 'editor', height = 5, width = 5, row = 5, col = 5 }
   2159        )
   2160        eq(topdir .. '/Xacd', fn.getcwd())
   2161      end)
   2162    end)
   2163 
   2164    it('no memory leak with valid title and invalid footer', function()
   2165      eq(
   2166        'title/footer must be string or array',
   2167        pcall_err(api.nvim_open_win, 0, false, {
   2168          relative = 'editor',
   2169          row = 10,
   2170          col = 10,
   2171          height = 10,
   2172          width = 10,
   2173          border = 'single',
   2174          title = { { 'TITLE' } },
   2175          footer = 0,
   2176        })
   2177      )
   2178    end)
   2179 
   2180    it('no memory leak with invalid title and valid footer', function()
   2181      eq(
   2182        'title/footer must be string or array',
   2183        pcall_err(api.nvim_open_win, 0, false, {
   2184          relative = 'editor',
   2185          row = 10,
   2186          col = 10,
   2187          height = 10,
   2188          width = 10,
   2189          border = 'single',
   2190          title = 0,
   2191          footer = { { 'FOOTER' } },
   2192        })
   2193      )
   2194    end)
   2195 
   2196    it('no crash when closing the only non-float in other tabpage #31236', function()
   2197      local tp = api.nvim_get_current_tabpage()
   2198      local split_win = api.nvim_get_current_win()
   2199      local float_win = api.nvim_open_win(
   2200        0,
   2201        false,
   2202        { relative = 'editor', width = 5, height = 5, row = 1, col = 1 }
   2203      )
   2204      command('tabnew')
   2205 
   2206      api.nvim_win_close(split_win, false)
   2207      eq(false, api.nvim_win_is_valid(split_win))
   2208      eq(false, api.nvim_win_is_valid(float_win))
   2209      eq(false, api.nvim_tabpage_is_valid(tp))
   2210 
   2211      tp = api.nvim_get_current_tabpage()
   2212      split_win = api.nvim_get_current_win()
   2213      local float_buf = api.nvim_create_buf(true, false)
   2214      float_win = api.nvim_open_win(
   2215        float_buf,
   2216        false,
   2217        { relative = 'editor', width = 5, height = 5, row = 1, col = 1 }
   2218      )
   2219      -- Set these options to prevent the float from being automatically closed.
   2220      api.nvim_set_option_value('modified', true, { buf = float_buf })
   2221      api.nvim_set_option_value('bufhidden', 'wipe', { buf = float_buf })
   2222      command('tabnew')
   2223 
   2224      matches(
   2225        'E5601: Cannot close window, only floating window would remain$',
   2226        pcall_err(api.nvim_win_close, split_win, false)
   2227      )
   2228      eq(true, api.nvim_win_is_valid(split_win))
   2229      eq(true, api.nvim_win_is_valid(float_win))
   2230      eq(true, api.nvim_tabpage_is_valid(tp))
   2231 
   2232      api.nvim_set_current_win(float_win)
   2233      api.nvim_win_close(split_win, true) -- Force it this time.
   2234      eq(false, api.nvim_win_is_valid(split_win))
   2235      eq(false, api.nvim_win_is_valid(float_win))
   2236      eq(false, api.nvim_tabpage_is_valid(tp))
   2237 
   2238      -- Ensure opening a float after the initial check (like in WinClosed) doesn't crash...
   2239      exec([[
   2240        tabnew
   2241        let g:tp = nvim_get_current_tabpage()
   2242        let g:win = win_getid()
   2243        tabprevious
   2244        autocmd! WinClosed * ++once call nvim_open_win(0, 0, #{win: g:win, relative: 'win', width: 5, height: 5, row: 5, col: 5})
   2245      ]])
   2246      matches(
   2247        'E5601: Cannot close window, only floating window would remain$',
   2248        pcall_err(command, 'call nvim_win_close(g:win, 0)')
   2249      )
   2250      eq(true, eval 'nvim_tabpage_is_valid(g:tp)')
   2251 
   2252      exec([[
   2253        tabnew
   2254        let g:tp = nvim_get_current_tabpage()
   2255        let g:win = win_getid()
   2256        let g:buf = bufnr()
   2257        tabprevious
   2258        let s:buf2 = nvim_create_buf(0, 0)
   2259        call setbufvar(s:buf2, '&modified', 1)
   2260        call setbufvar(s:buf2, '&bufhidden', 'wipe')
   2261        autocmd! WinClosed * ++once call nvim_open_win(s:buf2, 0, #{win: g:win, relative: 'win', width: 5, height: 5, row: 5, col: 5})
   2262      ]])
   2263      matches(
   2264        'E5601: Cannot close window, only floating window would remain$',
   2265        pcall_err(command, 'call nvim_buf_delete(g:buf, #{force: 1})')
   2266      )
   2267      eq(true, eval 'nvim_tabpage_is_valid(g:tp)')
   2268    end)
   2269 
   2270    it('respects requested size for large splits', function()
   2271      command('vsplit')
   2272      local win = api.nvim_open_win(0, false, { win = -1, split = 'right', width = 38 })
   2273      eq(38, api.nvim_win_get_width(win))
   2274 
   2275      -- No zero-sized windows (e.g: from skipping forced equalization in win_split_ins) if
   2276      -- requesting a chonky window; that could lead to crashes!
   2277      api.nvim_open_win(0, false, { win = -1, split = 'right', width = 9999 })
   2278      eq({ 1, 1, 1, 74 }, eval("range(1, winnr('$'))->map({_, nr -> winwidth(nr)})"))
   2279 
   2280      command('split')
   2281      win = api.nvim_open_win(0, false, { win = 0, split = 'below', height = 10 })
   2282      eq(10, api.nvim_win_get_height(win))
   2283 
   2284      -- Still defaults to half-sized when no size was specified.
   2285      command('only')
   2286      eq(80, api.nvim_win_get_width(0))
   2287      api.nvim_open_win(0, true, { split = 'right' })
   2288      eq(40, api.nvim_win_get_width(0))
   2289 
   2290      eq(22, api.nvim_win_get_height(0))
   2291      api.nvim_open_win(0, true, { split = 'below' })
   2292      eq(11, api.nvim_win_get_height(0))
   2293    end)
   2294 
   2295    it('no leak when win_set_buf fails and window is closed immediately', function()
   2296      -- Following used to leak.
   2297      command('autocmd BufEnter * ++once quit! | throw 1337')
   2298      eq(
   2299        'Window was closed immediately',
   2300        pcall_err(
   2301          api.nvim_open_win,
   2302          api.nvim_create_buf(true, true),
   2303          true,
   2304          { relative = 'editor', width = 5, height = 5, row = 1, col = 1 }
   2305        )
   2306      )
   2307      -- If the window wasn't closed, still set errors from win_set_buf.
   2308      command('autocmd BufEnter * ++once throw 1337')
   2309      eq(
   2310        'BufEnter Autocommands for "*": 1337',
   2311        pcall_err(
   2312          api.nvim_open_win,
   2313          api.nvim_create_buf(true, true),
   2314          true,
   2315          { relative = 'editor', width = 5, height = 5, row = 1, col = 1 }
   2316        )
   2317      )
   2318    end)
   2319  end)
   2320 
   2321  describe('set_config', function()
   2322    it("uses 'winborder' when converting a split to a floating window", function()
   2323      api.nvim_set_option_value('winborder', 'single', {})
   2324      command('split')
   2325      local winid = api.nvim_get_current_win()
   2326      -- Convert split to float without specifying border
   2327      api.nvim_win_set_config(winid, {
   2328        relative = 'editor',
   2329        row = 2,
   2330        col = 2,
   2331        width = 10,
   2332        height = 5,
   2333      })
   2334      local config = api.nvim_win_get_config(winid)
   2335      eq('┌', config.border[1])
   2336    end)
   2337 
   2338    it('erases border of a floating window when converting to split window', function()
   2339      api.nvim_set_option_value('winborder', 'single', {})
   2340      local winid = api.nvim_open_win(api.nvim_create_buf(false, false), false, {
   2341        relative = 'editor',
   2342        row = 2,
   2343        col = 2,
   2344        width = 10,
   2345        height = 5,
   2346      })
   2347      local config = api.nvim_win_get_config(winid)
   2348      eq('┌', config.border[1])
   2349      api.nvim_win_set_config(winid, { split = 'right', win = 0 })
   2350      config = api.nvim_win_get_config(winid)
   2351      eq(nil, config.border)
   2352    end)
   2353 
   2354    it('moves a split into a float', function()
   2355      local win = api.nvim_open_win(0, true, {
   2356        vertical = false,
   2357      })
   2358      eq('', api.nvim_win_get_config(win).relative)
   2359      api.nvim_win_set_config(win, {
   2360        relative = 'editor',
   2361        row = 5,
   2362        col = 5,
   2363        width = 5,
   2364        height = 5,
   2365      })
   2366      eq('editor', api.nvim_win_get_config(win).relative)
   2367    end)
   2368 
   2369    it('throws error when attempting to move the last non-floating window', function()
   2370      local err = pcall_err(api.nvim_win_set_config, 0, {
   2371        vertical = false,
   2372      })
   2373      eq('Cannot move last non-floating window', err)
   2374 
   2375      local win1 = api.nvim_get_current_win()
   2376      command('tabnew')
   2377      eq(
   2378        'Cannot move last non-floating window',
   2379        pcall_err(api.nvim_win_set_config, 0, { win = win1, split = 'left' })
   2380      )
   2381      api.nvim_open_win(0, false, { relative = 'editor', width = 5, height = 5, row = 1, col = 1 })
   2382      eq(
   2383        'Cannot move last non-floating window',
   2384        pcall_err(api.nvim_win_set_config, 0, { win = win1, split = 'left' })
   2385      )
   2386 
   2387      -- If it's no longer the last non-float, still an error if autocommands make it the last
   2388      -- non-float again before it's moved.
   2389      command('vsplit')
   2390      exec_lua(function()
   2391        vim.api.nvim_create_autocmd('WinEnter', {
   2392          once = true,
   2393          callback = function()
   2394            vim.api.nvim_win_set_config(
   2395              0,
   2396              { relative = 'editor', width = 5, height = 5, row = 1, col = 1 }
   2397            )
   2398          end,
   2399        })
   2400      end)
   2401      eq(
   2402        'Cannot move last non-floating window',
   2403        pcall_err(api.nvim_win_set_config, 0, { win = win1, split = 'left' })
   2404      )
   2405    end)
   2406 
   2407    it('passing retval of get_config results in no-op', function()
   2408      -- simple split layout
   2409      local win = api.nvim_open_win(0, true, {
   2410        split = 'left',
   2411      })
   2412      local layout = fn.winlayout()
   2413      local config = api.nvim_win_get_config(win)
   2414      api.nvim_win_set_config(win, config)
   2415      eq(layout, fn.winlayout())
   2416 
   2417      -- nested split layout
   2418      local win2 = api.nvim_open_win(0, true, {
   2419        vertical = true,
   2420      })
   2421      local win3 = api.nvim_open_win(0, true, {
   2422        win = win2,
   2423        vertical = false,
   2424      })
   2425      layout = fn.winlayout()
   2426      config = api.nvim_win_get_config(win2)
   2427      api.nvim_win_set_config(win2, config)
   2428      eq(layout, fn.winlayout())
   2429 
   2430      config = api.nvim_win_get_config(win3)
   2431      api.nvim_win_set_config(win3, config)
   2432      eq(layout, fn.winlayout())
   2433    end)
   2434 
   2435    it('moves a float into a split', function()
   2436      local layout = fn.winlayout()
   2437      eq('leaf', layout[1])
   2438      local win = api.nvim_open_win(0, true, {
   2439        relative = 'editor',
   2440        row = 5,
   2441        col = 5,
   2442        width = 5,
   2443        height = 5,
   2444      })
   2445      api.nvim_win_set_config(win, {
   2446        split = 'below',
   2447        win = -1,
   2448      })
   2449      eq('', api.nvim_win_get_config(win).relative)
   2450      layout = fn.winlayout()
   2451      eq('col', layout[1])
   2452      eq(2, #layout[2])
   2453      eq(win, layout[2][2][2])
   2454    end)
   2455 
   2456    it('respects the "split" option', function()
   2457      local layout = fn.winlayout()
   2458      eq('leaf', layout[1])
   2459      local first_win = layout[2]
   2460      local win = api.nvim_open_win(0, true, {
   2461        relative = 'editor',
   2462        row = 5,
   2463        col = 5,
   2464        width = 5,
   2465        height = 5,
   2466      })
   2467      api.nvim_win_set_config(win, {
   2468        split = 'right',
   2469        win = first_win,
   2470      })
   2471      layout = fn.winlayout()
   2472      eq('row', layout[1])
   2473      eq(2, #layout[2])
   2474      eq(win, layout[2][2][2])
   2475      local config = api.nvim_win_get_config(win)
   2476      eq('', config.relative)
   2477      eq('right', config.split)
   2478      api.nvim_win_set_config(win, {
   2479        split = 'below',
   2480        win = first_win,
   2481      })
   2482      layout = fn.winlayout()
   2483      eq('col', layout[1])
   2484      eq(2, #layout[2])
   2485      eq(win, layout[2][2][2])
   2486      config = api.nvim_win_get_config(win)
   2487      eq('', config.relative)
   2488      eq('below', config.split)
   2489 
   2490      eq(
   2491        "non-float with 'win' requires at least 'split' or 'vertical'",
   2492        pcall_err(api.nvim_win_set_config, 0, { win = 0 })
   2493      )
   2494      eq(
   2495        "non-float with 'win' requires at least 'split' or 'vertical'",
   2496        pcall_err(api.nvim_win_set_config, 0, { win = 0, relative = '' })
   2497      )
   2498    end)
   2499 
   2500    it('creates top-level splits', function()
   2501      local win = api.nvim_open_win(0, true, {
   2502        vertical = false,
   2503      })
   2504      local win2 = api.nvim_open_win(0, true, {
   2505        vertical = true,
   2506        win = -1,
   2507      })
   2508      local layout = fn.winlayout()
   2509      eq('row', layout[1])
   2510      eq(2, #layout[2])
   2511      eq(win2, layout[2][1][2])
   2512      api.nvim_win_set_config(win, {
   2513        split = 'below',
   2514        win = -1,
   2515      })
   2516      layout = fn.winlayout()
   2517      eq('col', layout[1])
   2518      eq(2, #layout[2])
   2519      eq('row', layout[2][1][1])
   2520      eq(win, layout[2][2][2])
   2521    end)
   2522 
   2523    it('moves splits to other tabpages', function()
   2524      local curtab = api.nvim_get_current_tabpage()
   2525      local win = api.nvim_open_win(0, false, { split = 'left' })
   2526      command('tabnew')
   2527      local tabnr = api.nvim_get_current_tabpage()
   2528      command('tabprev') -- return to the initial tab
   2529 
   2530      api.nvim_win_set_config(win, {
   2531        split = 'right',
   2532        win = api.nvim_tabpage_get_win(tabnr),
   2533      })
   2534 
   2535      eq(tabnr, api.nvim_win_get_tabpage(win))
   2536      -- we are changing the config, the current tabpage should not change
   2537      eq(curtab, api.nvim_get_current_tabpage())
   2538 
   2539      command('tabnext') -- switch to the new tabpage so we can get the layout
   2540      local layout = fn.winlayout()
   2541 
   2542      eq({
   2543        'row',
   2544        {
   2545          { 'leaf', api.nvim_tabpage_get_win(tabnr) },
   2546          { 'leaf', win },
   2547        },
   2548      }, layout)
   2549    end)
   2550 
   2551    it('correctly moves curwin when moving curwin to a different tabpage', function()
   2552      local curtab = api.nvim_get_current_tabpage()
   2553      command('tabnew')
   2554      local tab2 = api.nvim_get_current_tabpage()
   2555      local tab2_win = api.nvim_get_current_win()
   2556 
   2557      command('tabprev') -- return to the initial tab
   2558 
   2559      local neighbor = api.nvim_get_current_win()
   2560 
   2561      -- create and enter a new split
   2562      local win = api.nvim_open_win(0, true, {
   2563        vertical = false,
   2564      })
   2565 
   2566      eq(curtab, api.nvim_win_get_tabpage(win))
   2567 
   2568      eq({ win, neighbor }, api.nvim_tabpage_list_wins(curtab))
   2569 
   2570      -- move the current win to a different tabpage
   2571      api.nvim_win_set_config(win, {
   2572        split = 'right',
   2573        win = api.nvim_tabpage_get_win(tab2),
   2574      })
   2575 
   2576      eq(curtab, api.nvim_get_current_tabpage())
   2577 
   2578      -- win should have moved to tab2
   2579      eq(tab2, api.nvim_win_get_tabpage(win))
   2580      -- tp_curwin of tab2 should not have changed
   2581      eq(tab2_win, api.nvim_tabpage_get_win(tab2))
   2582      -- win lists should be correct
   2583      eq({ tab2_win, win }, api.nvim_tabpage_list_wins(tab2))
   2584      eq({ neighbor }, api.nvim_tabpage_list_wins(curtab))
   2585 
   2586      -- current win should have moved to neighboring win
   2587      eq(neighbor, api.nvim_tabpage_get_win(curtab))
   2588    end)
   2589 
   2590    it('splits windows in non-current tabpage', function()
   2591      local curtab = api.nvim_get_current_tabpage()
   2592      command('tabnew')
   2593      local tabnr = api.nvim_get_current_tabpage()
   2594      command('tabprev') -- return to the initial tab
   2595 
   2596      local win = api.nvim_open_win(0, false, {
   2597        vertical = false,
   2598        win = api.nvim_tabpage_get_win(tabnr),
   2599      })
   2600 
   2601      eq(tabnr, api.nvim_win_get_tabpage(win))
   2602      -- since enter = false, the current tabpage should not change
   2603      eq(curtab, api.nvim_get_current_tabpage())
   2604    end)
   2605 
   2606    it('moves the current split window', function()
   2607      local initial_win = api.nvim_get_current_win()
   2608      local win = api.nvim_open_win(0, true, {
   2609        vertical = true,
   2610      })
   2611      local win2 = api.nvim_open_win(0, true, {
   2612        vertical = true,
   2613      })
   2614      api.nvim_set_current_win(win)
   2615      eq({
   2616        'row',
   2617        {
   2618          { 'leaf', win2 },
   2619          { 'leaf', win },
   2620          { 'leaf', initial_win },
   2621        },
   2622      }, fn.winlayout())
   2623 
   2624      api.nvim_win_set_config(0, {
   2625        vertical = false,
   2626        win = 0,
   2627      })
   2628      eq(win, api.nvim_get_current_win())
   2629      eq({
   2630        'col',
   2631        {
   2632          { 'leaf', win },
   2633          {
   2634            'row',
   2635            {
   2636              { 'leaf', win2 },
   2637              { 'leaf', initial_win },
   2638            },
   2639          },
   2640        },
   2641      }, fn.winlayout())
   2642 
   2643      api.nvim_set_current_win(win2)
   2644      local win3 = api.nvim_open_win(0, true, {
   2645        vertical = true,
   2646      })
   2647      eq(win3, api.nvim_get_current_win())
   2648 
   2649      eq({
   2650        'col',
   2651        {
   2652          { 'leaf', win },
   2653          {
   2654            'row',
   2655            {
   2656              { 'leaf', win3 },
   2657              { 'leaf', win2 },
   2658              { 'leaf', initial_win },
   2659            },
   2660          },
   2661        },
   2662      }, fn.winlayout())
   2663 
   2664      api.nvim_win_set_config(0, {
   2665        vertical = false,
   2666        win = 0,
   2667      })
   2668 
   2669      eq(win3, api.nvim_get_current_win())
   2670      eq({
   2671        'col',
   2672        {
   2673          { 'leaf', win },
   2674          {
   2675            'row',
   2676            {
   2677              {
   2678                'col',
   2679                {
   2680                  { 'leaf', win3 },
   2681                  { 'leaf', win2 },
   2682                },
   2683              },
   2684              { 'leaf', initial_win },
   2685            },
   2686          },
   2687        },
   2688      }, fn.winlayout())
   2689    end)
   2690 
   2691    it('closing new curwin when moving window to other tabpage works', function()
   2692      command('split | tabnew')
   2693      local t2_win = api.nvim_get_current_win()
   2694      command('tabfirst | autocmd WinEnter * ++once quit')
   2695      local t1_move_win = api.nvim_get_current_win()
   2696      -- win_set_config fails to switch away from "t1_move_win" because the WinEnter autocmd that
   2697      -- closed the window we're switched to returns us to "t1_move_win", as it filled the space.
   2698      eq(
   2699        'Failed to switch away from window ' .. t1_move_win,
   2700        pcall_err(api.nvim_win_set_config, t1_move_win, { win = t2_win, split = 'left' })
   2701      )
   2702      eq(t1_move_win, api.nvim_get_current_win())
   2703 
   2704      command('split | split | autocmd WinEnter * ++once quit')
   2705      t1_move_win = api.nvim_get_current_win()
   2706      -- In this case, we closed the window that we got switched to, but doing so didn't switch us
   2707      -- back to "t1_move_win", which is fine.
   2708      api.nvim_win_set_config(t1_move_win, { win = t2_win, split = 'left' })
   2709      neq(t1_move_win, api.nvim_get_current_win())
   2710    end)
   2711 
   2712    it('messing with "win" or "parent" when moving "win" to other tabpage', function()
   2713      command('split | tabnew')
   2714      local t2 = api.nvim_get_current_tabpage()
   2715      local t2_win1 = api.nvim_get_current_win()
   2716      command('split')
   2717      local t2_win2 = api.nvim_get_current_win()
   2718      command('split')
   2719      local t2_win3 = api.nvim_get_current_win()
   2720 
   2721      command('tabfirst | autocmd WinEnter * ++once call nvim_win_close(' .. t2_win1 .. ', 1)')
   2722      local cur_win = api.nvim_get_current_win()
   2723      eq(
   2724        'Windows to split were closed',
   2725        pcall_err(api.nvim_win_set_config, 0, { win = t2_win1, split = 'left' })
   2726      )
   2727      eq(cur_win, api.nvim_get_current_win())
   2728 
   2729      command('split | autocmd WinLeave * ++once quit!')
   2730      cur_win = api.nvim_get_current_win()
   2731      eq(
   2732        'Windows to split were closed',
   2733        pcall_err(api.nvim_win_set_config, 0, { win = t2_win2, split = 'left' })
   2734      )
   2735      neq(cur_win, api.nvim_get_current_win())
   2736 
   2737      exec([[
   2738        split
   2739        autocmd WinLeave * ++once
   2740              \ call nvim_win_set_config(0, #{relative:'editor', row:0, col:0, width:5, height:5})
   2741      ]])
   2742      cur_win = api.nvim_get_current_win()
   2743      eq(
   2744        'Floating state of windows to split changed',
   2745        pcall_err(api.nvim_win_set_config, 0, { win = t2_win3, split = 'left' })
   2746      )
   2747      eq('editor', api.nvim_win_get_config(0).relative)
   2748      eq(cur_win, api.nvim_get_current_win())
   2749 
   2750      command('autocmd WinLeave * ++once wincmd J')
   2751      cur_win = api.nvim_get_current_win()
   2752      eq(
   2753        'Floating state of windows to split changed',
   2754        pcall_err(api.nvim_win_set_config, 0, { win = t2_win3, split = 'left' })
   2755      )
   2756      eq('', api.nvim_win_get_config(0).relative)
   2757      eq(cur_win, api.nvim_get_current_win())
   2758 
   2759      -- Try to make "parent" floating. This should give the same error as before, but because
   2760      -- changing a split from another tabpage into a float isn't supported yet, check for that
   2761      -- error instead for now.
   2762      -- Use ":silent!" to avoid the one second delay from printing the error message.
   2763      exec(([[
   2764        autocmd WinLeave * ++once silent!
   2765              \ call nvim_win_set_config(%d, #{relative:'editor', row:0, col:0, width:5, height:5})
   2766      ]]):format(t2_win3))
   2767      cur_win = api.nvim_get_current_win()
   2768      api.nvim_win_set_config(0, { win = t2_win3, split = 'left' })
   2769      matches(
   2770        'Cannot change window from different tabpage into float$',
   2771        api.nvim_get_vvar('errmsg')
   2772      )
   2773      -- The error doesn't abort moving the window (or maybe it should, if that's wanted?)
   2774      neq(cur_win, api.nvim_get_current_win())
   2775      eq(t2, api.nvim_win_get_tabpage(cur_win))
   2776    end)
   2777 
   2778    it('expected autocmds when moving window to other tabpage', function()
   2779      local new_curwin = api.nvim_get_current_win()
   2780      command('split')
   2781      local win = api.nvim_get_current_win()
   2782      command('tabnew')
   2783      local parent = api.nvim_get_current_win()
   2784      exec([[
   2785        tabfirst
   2786        let result = []
   2787        autocmd WinEnter * let result += ["Enter", win_getid()]
   2788        autocmd WinLeave * let result += ["Leave", win_getid()]
   2789        autocmd WinNew * let result += ["New", win_getid()]
   2790      ]])
   2791      api.nvim_win_set_config(0, { win = parent, split = 'left' })
   2792      -- Shouldn't see WinNew, as we're not creating any new windows, just moving existing ones.
   2793      eq({ 'Leave', win, 'Enter', new_curwin }, eval('result'))
   2794    end)
   2795 
   2796    it('no autocmds when moving window within same tabpage', function()
   2797      local parent = api.nvim_get_current_win()
   2798      exec([[
   2799        split
   2800        let result = []
   2801        autocmd WinEnter * let result += ["Enter", win_getid()]
   2802        autocmd WinLeave * let result += ["Leave", win_getid()]
   2803        autocmd WinNew * let result += ["New", win_getid()]
   2804      ]])
   2805      api.nvim_win_set_config(0, { win = parent, split = 'left' })
   2806      -- Shouldn't see any of those events, as we remain in the same window.
   2807      eq({}, eval('result'))
   2808    end)
   2809 
   2810    it('checks if splitting disallowed', function()
   2811      command('split | autocmd WinEnter * ++once call nvim_win_set_config(0, #{split: "right"})')
   2812      matches("E242: Can't split a window while closing another$", pcall_err(command, 'quit'))
   2813 
   2814      command('autocmd BufHidden * ++once call nvim_win_set_config(0, #{split: "left"})')
   2815      matches(
   2816        'E1159: Cannot split a window when closing the buffer$',
   2817        pcall_err(command, 'new | quit')
   2818      )
   2819 
   2820      -- OK when using window to different buffer.
   2821      local w = api.nvim_get_current_win()
   2822      command('autocmd BufHidden * ++once call nvim_win_set_config(' .. w .. ', #{split: "left"})')
   2823      command('new | quit')
   2824    end)
   2825 
   2826    --- Returns a function to get information about the window layout, sizes and positions of a
   2827    --- tabpage.
   2828    local function define_tp_info_function()
   2829      exec_lua([[
   2830        function tp_info(tp)
   2831          return {
   2832            layout = vim.fn.winlayout(vim.api.nvim_tabpage_get_number(tp)),
   2833            pos_sizes = vim.tbl_map(
   2834              function(w)
   2835                local pos = vim.fn.win_screenpos(w)
   2836                return {
   2837                  row = pos[1],
   2838                  col = pos[2],
   2839                  width = vim.fn.winwidth(w),
   2840                  height = vim.fn.winheight(w)
   2841                }
   2842              end,
   2843              vim.api.nvim_tabpage_list_wins(tp)
   2844            )
   2845          }
   2846        end
   2847      ]])
   2848 
   2849      return function(tp)
   2850        return exec_lua('return tp_info(...)', tp)
   2851      end
   2852    end
   2853 
   2854    it('attempt to move window with no room', function()
   2855      -- Fill the 2nd tabpage full of windows until we run out of room.
   2856      -- Use &laststatus=0 to ensure restoring missing statuslines doesn't affect things.
   2857      command('set laststatus=0 | tabnew')
   2858      matches('E36: Not enough room$', pcall_err(command, 'execute "split|"->repeat(&lines)'))
   2859      command('vsplit | wincmd | | wincmd p')
   2860      local t2 = api.nvim_get_current_tabpage()
   2861      local t2_cur_win = api.nvim_get_current_win()
   2862      local t2_top_split = fn.win_getid(1)
   2863      local t2_bot_split = fn.win_getid(fn.winnr('$'))
   2864      local t2_float = api.nvim_open_win(
   2865        0,
   2866        false,
   2867        { relative = 'editor', row = 0, col = 0, width = 10, height = 10 }
   2868      )
   2869      local t2_float_config = api.nvim_win_get_config(t2_float)
   2870      local tp_info = define_tp_info_function()
   2871      local t2_info = tp_info(t2)
   2872      matches(
   2873        'E36: Not enough room$',
   2874        pcall_err(api.nvim_win_set_config, 0, { win = t2_top_split, split = 'above' })
   2875      )
   2876      matches(
   2877        'E36: Not enough room$',
   2878        pcall_err(api.nvim_win_set_config, 0, { win = t2_top_split, split = 'below' })
   2879      )
   2880      matches(
   2881        'E36: Not enough room$',
   2882        pcall_err(api.nvim_win_set_config, 0, { win = t2_bot_split, split = 'above' })
   2883      )
   2884      matches(
   2885        'E36: Not enough room$',
   2886        pcall_err(api.nvim_win_set_config, 0, { win = t2_bot_split, split = 'below' })
   2887      )
   2888      matches(
   2889        'E36: Not enough room$',
   2890        pcall_err(api.nvim_win_set_config, t2_float, { win = t2_top_split, split = 'above' })
   2891      )
   2892      matches(
   2893        'E36: Not enough room$',
   2894        pcall_err(api.nvim_win_set_config, t2_float, { win = t2_top_split, split = 'below' })
   2895      )
   2896      matches(
   2897        'E36: Not enough room$',
   2898        pcall_err(api.nvim_win_set_config, t2_float, { win = t2_bot_split, split = 'above' })
   2899      )
   2900      matches(
   2901        'E36: Not enough room$',
   2902        pcall_err(api.nvim_win_set_config, t2_float, { win = t2_bot_split, split = 'below' })
   2903      )
   2904      eq(t2_cur_win, api.nvim_get_current_win())
   2905      eq(t2_info, tp_info(t2))
   2906      eq(t2_float_config, api.nvim_win_get_config(t2_float))
   2907 
   2908      -- Try to move windows from the 1st tabpage to the 2nd.
   2909      command('tabfirst | split | wincmd _')
   2910      local t1 = api.nvim_get_current_tabpage()
   2911      local t1_cur_win = api.nvim_get_current_win()
   2912      local t1_float = api.nvim_open_win(
   2913        0,
   2914        false,
   2915        { relative = 'editor', row = 5, col = 3, width = 7, height = 6 }
   2916      )
   2917      local t1_float_config = api.nvim_win_get_config(t1_float)
   2918      local t1_info = tp_info(t1)
   2919      matches(
   2920        'E36: Not enough room$',
   2921        pcall_err(api.nvim_win_set_config, 0, { win = t2_top_split, split = 'above' })
   2922      )
   2923      matches(
   2924        'E36: Not enough room$',
   2925        pcall_err(api.nvim_win_set_config, 0, { win = t2_top_split, split = 'below' })
   2926      )
   2927      matches(
   2928        'E36: Not enough room$',
   2929        pcall_err(api.nvim_win_set_config, 0, { win = t2_bot_split, split = 'above' })
   2930      )
   2931      matches(
   2932        'E36: Not enough room$',
   2933        pcall_err(api.nvim_win_set_config, 0, { win = t2_bot_split, split = 'below' })
   2934      )
   2935      matches(
   2936        'E36: Not enough room$',
   2937        pcall_err(api.nvim_win_set_config, t1_float, { win = t2_top_split, split = 'above' })
   2938      )
   2939      matches(
   2940        'E36: Not enough room$',
   2941        pcall_err(api.nvim_win_set_config, t1_float, { win = t2_top_split, split = 'below' })
   2942      )
   2943      matches(
   2944        'E36: Not enough room$',
   2945        pcall_err(api.nvim_win_set_config, t1_float, { win = t2_bot_split, split = 'above' })
   2946      )
   2947      matches(
   2948        'E36: Not enough room$',
   2949        pcall_err(api.nvim_win_set_config, t1_float, { win = t2_bot_split, split = 'below' })
   2950      )
   2951      eq(t1_cur_win, api.nvim_get_current_win())
   2952      eq(t1_info, tp_info(t1))
   2953      eq(t1_float_config, api.nvim_win_get_config(t1_float))
   2954    end)
   2955 
   2956    it('attempt to move window from other tabpage with no room', function()
   2957      -- Fill up the 1st tabpage with horizontal splits, then create a 2nd with only a few. Go back
   2958      -- to the 1st and try to move windows from the 2nd (while it's non-current) to it. Check that
   2959      -- window positions and sizes in the 2nd are unchanged.
   2960      command('set laststatus=0')
   2961      matches('E36: Not enough room$', pcall_err(command, 'execute "split|"->repeat(&lines)'))
   2962 
   2963      command('tab split')
   2964      local t2 = api.nvim_get_current_tabpage()
   2965      local t2_top = api.nvim_get_current_win()
   2966      command('belowright split')
   2967      local t2_mid_left = api.nvim_get_current_win()
   2968      command('belowright vsplit')
   2969      local t2_mid_right = api.nvim_get_current_win()
   2970      command('split | wincmd J')
   2971      local t2_bot = api.nvim_get_current_win()
   2972      local tp_info = define_tp_info_function()
   2973      local t2_info = tp_info(t2)
   2974      eq({
   2975        'col',
   2976        {
   2977          { 'leaf', t2_top },
   2978          {
   2979            'row',
   2980            {
   2981              { 'leaf', t2_mid_left },
   2982              { 'leaf', t2_mid_right },
   2983            },
   2984          },
   2985          { 'leaf', t2_bot },
   2986        },
   2987      }, t2_info.layout)
   2988 
   2989      local function try_move_t2_wins_to_t1()
   2990        for _, w in ipairs({ t2_bot, t2_mid_left, t2_mid_right, t2_top }) do
   2991          matches(
   2992            'E36: Not enough room$',
   2993            pcall_err(api.nvim_win_set_config, w, { win = 0, split = 'below' })
   2994          )
   2995          eq(t2_info, tp_info(t2))
   2996        end
   2997      end
   2998      command('tabfirst')
   2999      try_move_t2_wins_to_t1()
   3000      -- Go to the 2nd tabpage to ensure nothing changes after win_comp_pos, last_status, .etc.
   3001      -- from enter_tabpage.
   3002      command('tabnext')
   3003      eq(t2_info, tp_info(t2))
   3004 
   3005      -- Check things are fine with the global statusline too, for good measure.
   3006      -- Set it while the 2nd tabpage is current, so last_status runs for it.
   3007      command('set laststatus=3')
   3008      t2_info = tp_info(t2)
   3009      command('tabfirst')
   3010      try_move_t2_wins_to_t1()
   3011    end)
   3012 
   3013    it('handles cmdwin and textlock restrictions', function()
   3014      command('tabnew')
   3015      local t2 = api.nvim_get_current_tabpage()
   3016      local t2_win = api.nvim_get_current_win()
   3017      command('tabfirst')
   3018      local t1_move_win = api.nvim_get_current_win()
   3019      command('split')
   3020 
   3021      -- Can't move the cmdwin, or its old curwin to a different tabpage.
   3022      local old_curwin = api.nvim_get_current_win()
   3023      feed('q:')
   3024      eq(
   3025        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
   3026        pcall_err(api.nvim_win_set_config, 0, { split = 'left', win = t2_win })
   3027      )
   3028      eq(
   3029        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
   3030        pcall_err(api.nvim_win_set_config, old_curwin, { split = 'left', win = t2_win })
   3031      )
   3032      -- But we can move other windows.
   3033      api.nvim_win_set_config(t1_move_win, { split = 'left', win = t2_win })
   3034      eq(t2, api.nvim_win_get_tabpage(t1_move_win))
   3035      command('quit!')
   3036 
   3037      -- Can't configure windows such that the cmdwin would become the only non-float.
   3038      command('only!')
   3039      feed('q:')
   3040      eq(
   3041        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
   3042        pcall_err(
   3043          api.nvim_win_set_config,
   3044          old_curwin,
   3045          { relative = 'editor', row = 0, col = 0, width = 5, height = 5 }
   3046        )
   3047      )
   3048      -- old_curwin is now no longer the only other non-float, so we can make it floating now.
   3049      local t1_new_win = api.nvim_open_win(
   3050        api.nvim_create_buf(true, true),
   3051        false,
   3052        { split = 'left', win = old_curwin }
   3053      )
   3054      api.nvim_win_set_config(
   3055        old_curwin,
   3056        { relative = 'editor', row = 0, col = 0, width = 5, height = 5 }
   3057      )
   3058      eq('editor', api.nvim_win_get_config(old_curwin).relative)
   3059      -- ...which means we shouldn't be able to also make the new window floating too!
   3060      eq(
   3061        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
   3062        pcall_err(
   3063          api.nvim_win_set_config,
   3064          t1_new_win,
   3065          { relative = 'editor', row = 0, col = 0, width = 5, height = 5 }
   3066        )
   3067      )
   3068      -- Nothing ought to stop us from making the cmdwin itself floating, though...
   3069      api.nvim_win_set_config(0, { relative = 'editor', row = 0, col = 0, width = 5, height = 5 })
   3070      eq('editor', api.nvim_win_get_config(0).relative)
   3071      -- We can't make our new window from before floating too, as it's now the only non-float.
   3072      eq(
   3073        'Cannot change last window into float',
   3074        pcall_err(
   3075          api.nvim_win_set_config,
   3076          t1_new_win,
   3077          { relative = 'editor', row = 0, col = 0, width = 5, height = 5 }
   3078        )
   3079      )
   3080      command('quit!')
   3081 
   3082      -- Can't switch away from window before moving it to a different tabpage during textlock.
   3083      exec(([[
   3084        new
   3085        call setline(1, 'foo')
   3086        setlocal debug=throw indentexpr=nvim_win_set_config(0,#{split:'left',win:%d})
   3087      ]]):format(t2_win))
   3088      local cur_win = api.nvim_get_current_win()
   3089      matches(
   3090        'E565: Not allowed to change text or change window$',
   3091        pcall_err(command, 'normal! ==')
   3092      )
   3093      eq(cur_win, api.nvim_get_current_win())
   3094    end)
   3095 
   3096    it('updates statusline when moving bottom split', function()
   3097      local screen = Screen.new(10, 10)
   3098      exec([[
   3099        set laststatus=0
   3100        belowright split
   3101        call nvim_win_set_config(0, #{split: 'above', win: win_getid(winnr('#'))})
   3102      ]])
   3103      screen:expect([[
   3104        ^            |
   3105        {1:~           }|*3
   3106        {3:[No Name]   }|
   3107                    |
   3108        {1:~           }|*3
   3109                    |
   3110      ]])
   3111    end)
   3112 
   3113    it("updates tp_curwin of moved window's original tabpage", function()
   3114      local t1 = api.nvim_get_current_tabpage()
   3115      command('tab split | split')
   3116      local t2 = api.nvim_get_current_tabpage()
   3117      local t2_alt_win = api.nvim_get_current_win()
   3118      command('vsplit')
   3119      local t2_cur_win = api.nvim_get_current_win()
   3120      command('tabprevious')
   3121      eq(t2_cur_win, api.nvim_tabpage_get_win(t2))
   3122 
   3123      -- tp_curwin is unchanged when moved within the same tabpage.
   3124      api.nvim_win_set_config(t2_cur_win, { split = 'left', win = t2_alt_win })
   3125      eq(t2_cur_win, api.nvim_tabpage_get_win(t2))
   3126 
   3127      -- Also unchanged if the move failed.
   3128      command('let &winwidth = &columns | let &winminwidth = &columns')
   3129      matches(
   3130        'E36: Not enough room$',
   3131        pcall_err(api.nvim_win_set_config, t2_cur_win, { split = 'left', win = 0 })
   3132      )
   3133      eq(t2_cur_win, api.nvim_tabpage_get_win(t2))
   3134      command('set winminwidth& winwidth&')
   3135 
   3136      -- But is changed if successfully moved to a different tabpage.
   3137      api.nvim_win_set_config(t2_cur_win, { split = 'left', win = 0 })
   3138      eq(t2_alt_win, api.nvim_tabpage_get_win(t2))
   3139      eq(t1, api.nvim_win_get_tabpage(t2_cur_win))
   3140 
   3141      -- Now do it for a float, which has different altwin logic.
   3142      command('tabnext')
   3143      t2_cur_win =
   3144        api.nvim_open_win(0, true, { relative = 'editor', row = 5, col = 5, width = 5, height = 5 })
   3145      eq(t2_alt_win, fn.win_getid(fn.winnr('#')))
   3146      command('tabprevious')
   3147      eq(t2_cur_win, api.nvim_tabpage_get_win(t2))
   3148 
   3149      api.nvim_win_set_config(t2_cur_win, { split = 'left', win = 0 })
   3150      eq(t2_alt_win, api.nvim_tabpage_get_win(t2))
   3151      eq(t1, api.nvim_win_get_tabpage(t2_cur_win))
   3152    end)
   3153 
   3154    it('set_config cannot change "noautocmd" #36409', function()
   3155      local cfg = { relative = 'editor', row = 1, col = 1, height = 2, width = 2, noautocmd = true }
   3156      local win = api.nvim_open_win(0, false, cfg)
   3157      cfg.height = 10
   3158      eq(true, pcall(api.nvim_win_set_config, win, cfg))
   3159      cfg.noautocmd = false
   3160      eq(
   3161        "'noautocmd' cannot be changed with existing windows",
   3162        pcall_err(api.nvim_win_set_config, win, cfg)
   3163      )
   3164    end)
   3165  end)
   3166 
   3167  describe('get_config', function()
   3168    it('includes border', function()
   3169      local b = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h' }
   3170      local win = api.nvim_open_win(0, true, {
   3171        relative = 'win',
   3172        row = 3,
   3173        col = 3,
   3174        width = 12,
   3175        height = 3,
   3176        border = b,
   3177      })
   3178 
   3179      local cfg = api.nvim_win_get_config(win)
   3180      eq(b, cfg.border)
   3181    end)
   3182 
   3183    it('includes border with highlight group', function()
   3184      local b = {
   3185        { 'a', 'Normal' },
   3186        { 'b', 'Special' },
   3187        { 'c', 'String' },
   3188        { 'd', 'Comment' },
   3189        { 'e', 'Visual' },
   3190        { 'f', 'Error' },
   3191        { 'g', 'Constant' },
   3192        { 'h', 'PreProc' },
   3193      }
   3194      local win = api.nvim_open_win(0, true, {
   3195        relative = 'win',
   3196        row = 3,
   3197        col = 3,
   3198        width = 12,
   3199        height = 3,
   3200        border = b,
   3201      })
   3202 
   3203      local cfg = api.nvim_win_get_config(win)
   3204      eq(b, cfg.border)
   3205    end)
   3206 
   3207    it('includes title and footer', function()
   3208      local title = { { 'A', { 'StatusLine', 'TabLine' } }, { 'B' }, { 'C', 'WinBar' } }
   3209      local footer = { { 'A', 'WinBar' }, { 'B' }, { 'C', { 'StatusLine', 'TabLine' } } }
   3210      local win = api.nvim_open_win(0, true, {
   3211        relative = 'win',
   3212        row = 3,
   3213        col = 3,
   3214        width = 12,
   3215        height = 3,
   3216        border = 'single',
   3217        title = title,
   3218        footer = footer,
   3219      })
   3220 
   3221      local cfg = api.nvim_win_get_config(win)
   3222      eq(title, cfg.title)
   3223      eq(footer, cfg.footer)
   3224    end)
   3225 
   3226    it('includes split for normal windows', function()
   3227      local win = api.nvim_open_win(0, true, {
   3228        vertical = true,
   3229        win = -1,
   3230      })
   3231      eq('left', api.nvim_win_get_config(win).split)
   3232      api.nvim_win_set_config(win, {
   3233        vertical = false,
   3234        win = -1,
   3235      })
   3236      eq('above', api.nvim_win_get_config(win).split)
   3237      api.nvim_win_set_config(win, {
   3238        split = 'below',
   3239        win = -1,
   3240      })
   3241      eq('below', api.nvim_win_get_config(win).split)
   3242    end)
   3243 
   3244    it('includes split when splitting with ex commands', function()
   3245      local win = api.nvim_get_current_win()
   3246      eq('left', api.nvim_win_get_config(win).split)
   3247 
   3248      command('vsplit')
   3249      local win2 = api.nvim_get_current_win()
   3250 
   3251      -- initial window now be marked as right split
   3252      -- since it was split with a vertical split
   3253      -- and 'splitright' is false by default
   3254      eq('right', api.nvim_win_get_config(win).split)
   3255      eq('left', api.nvim_win_get_config(win2).split)
   3256 
   3257      api.nvim_set_option_value('splitbelow', true, {
   3258        scope = 'global',
   3259      })
   3260      api.nvim_win_close(win, true)
   3261      command('split')
   3262      local win3 = api.nvim_get_current_win()
   3263      eq('below', api.nvim_win_get_config(win3).split)
   3264    end)
   3265 
   3266    it("includes the correct 'split' option in complex layouts", function()
   3267      local initial_win = api.nvim_get_current_win()
   3268      local win = api.nvim_open_win(0, false, {
   3269        split = 'right',
   3270        win = -1,
   3271      })
   3272 
   3273      local win2 = api.nvim_open_win(0, false, {
   3274        split = 'below',
   3275        win = win,
   3276      })
   3277 
   3278      api.nvim_win_set_config(win2, {
   3279        width = 50,
   3280      })
   3281 
   3282      api.nvim_win_set_config(win, {
   3283        split = 'left',
   3284        win = -1,
   3285      })
   3286 
   3287      local win3 = api.nvim_open_win(0, false, {
   3288        split = 'above',
   3289        win = -1,
   3290      })
   3291      local float = api.nvim_open_win(0, false, {
   3292        relative = 'editor',
   3293        width = 40,
   3294        height = 20,
   3295        col = 20,
   3296        row = 10,
   3297      })
   3298      api.nvim_win_set_config(float, {
   3299        split = 'right',
   3300        win = -1,
   3301      })
   3302 
   3303      local layout = fn.winlayout()
   3304 
   3305      eq({
   3306        'row',
   3307        {
   3308          {
   3309            'col',
   3310            {
   3311              { 'leaf', win3 },
   3312              {
   3313                'row',
   3314                {
   3315                  { 'leaf', win },
   3316                  { 'leaf', initial_win },
   3317                  { 'leaf', win2 },
   3318                },
   3319              },
   3320            },
   3321          },
   3322          {
   3323            'leaf',
   3324            float,
   3325          },
   3326        },
   3327      }, layout)
   3328 
   3329      eq('above', api.nvim_win_get_config(win3).split)
   3330      eq('left', api.nvim_win_get_config(win).split)
   3331      eq('left', api.nvim_win_get_config(initial_win).split)
   3332      eq('right', api.nvim_win_get_config(win2).split)
   3333      eq('right', api.nvim_win_get_config(float).split)
   3334    end)
   3335  end)
   3336 
   3337  describe('set_config', function()
   3338    it('no crash with invalid title', function()
   3339      local win = api.nvim_open_win(0, true, {
   3340        width = 10,
   3341        height = 10,
   3342        relative = 'editor',
   3343        row = 10,
   3344        col = 10,
   3345        title = { { 'test' } },
   3346        border = 'single',
   3347      })
   3348      eq(
   3349        'title/footer must be string or array',
   3350        pcall_err(api.nvim_win_set_config, win, { title = 0 })
   3351      )
   3352      command('redraw!')
   3353      assert_alive()
   3354      eq(
   3355        'title/footer cannot be an empty array',
   3356        pcall_err(api.nvim_win_set_config, win, { title = {} })
   3357      )
   3358      command('redraw!')
   3359      assert_alive()
   3360    end)
   3361 
   3362    it('no crash with invalid footer', function()
   3363      local win = api.nvim_open_win(0, true, {
   3364        width = 10,
   3365        height = 10,
   3366        relative = 'editor',
   3367        row = 10,
   3368        col = 10,
   3369        footer = { { 'test' } },
   3370        border = 'single',
   3371      })
   3372      eq(
   3373        'title/footer must be string or array',
   3374        pcall_err(api.nvim_win_set_config, win, { footer = 0 })
   3375      )
   3376      command('redraw!')
   3377      assert_alive()
   3378      eq(
   3379        'title/footer cannot be an empty array',
   3380        pcall_err(api.nvim_win_set_config, win, { footer = {} })
   3381      )
   3382      command('redraw!')
   3383      assert_alive()
   3384    end)
   3385 
   3386    describe('no crash or memory leak', function()
   3387      local win
   3388 
   3389      before_each(function()
   3390        win = api.nvim_open_win(0, false, {
   3391          relative = 'editor',
   3392          row = 10,
   3393          col = 10,
   3394          height = 10,
   3395          width = 10,
   3396          border = 'single',
   3397          title = { { 'OLD_TITLE' } },
   3398          footer = { { 'OLD_FOOTER' } },
   3399        })
   3400      end)
   3401 
   3402      it('with valid title and invalid footer', function()
   3403        eq(
   3404          'title/footer must be string or array',
   3405          pcall_err(api.nvim_win_set_config, win, {
   3406            title = { { 'NEW_TITLE' } },
   3407            footer = 0,
   3408          })
   3409        )
   3410        command('redraw!')
   3411        assert_alive()
   3412        eq({ { 'OLD_TITLE' } }, api.nvim_win_get_config(win).title)
   3413      end)
   3414 
   3415      it('with invalid title and valid footer', function()
   3416        eq(
   3417          'title/footer must be string or array',
   3418          pcall_err(api.nvim_win_set_config, win, {
   3419            title = 0,
   3420            footer = { { 'NEW_FOOTER' } },
   3421          })
   3422        )
   3423        command('redraw!')
   3424        assert_alive()
   3425        eq({ { 'OLD_FOOTER' } }, api.nvim_win_get_config(win).footer)
   3426      end)
   3427    end)
   3428 
   3429    it('cannot split from a float', function()
   3430      local win = api.nvim_get_current_win()
   3431      local float_win = api.nvim_open_win(0, true, {
   3432        relative = 'editor',
   3433        width = 10,
   3434        height = 10,
   3435        row = 10,
   3436        col = 10,
   3437      })
   3438      eq(
   3439        'Cannot split a floating window',
   3440        pcall_err(api.nvim_win_set_config, win, { win = float_win, split = 'right' })
   3441      )
   3442      eq(
   3443        'Cannot split a floating window',
   3444        pcall_err(api.nvim_win_set_config, win, { win = 0, split = 'right' })
   3445      )
   3446    end)
   3447 
   3448    it('cannot move autocmd window between tabpages', function()
   3449      local win_type, split_ok, err = exec_lua(function()
   3450        local other_tp_win = vim.api.nvim_get_current_win()
   3451        vim.cmd.tabnew()
   3452 
   3453        local win_type, split_ok, err
   3454        vim.api.nvim_buf_call(vim.api.nvim_create_buf(true, true), function()
   3455          win_type = vim.fn.win_gettype()
   3456          split_ok, err =
   3457            pcall(vim.api.nvim_win_set_config, 0, { win = other_tp_win, split = 'right' })
   3458        end)
   3459        return win_type, split_ok, err
   3460      end)
   3461      eq('autocmd', win_type)
   3462      eq({ false, 'Cannot move autocmd window to another tabpage' }, { split_ok, err })
   3463    end)
   3464 
   3465    it('cannot move cmdwin between tabpages', function()
   3466      local other_tp_win = api.nvim_get_current_win()
   3467      command('tabnew')
   3468      local old_curwin = api.nvim_get_current_win()
   3469      feed('q:')
   3470      eq('command', fn.win_gettype())
   3471      eq(
   3472        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
   3473        pcall_err(api.nvim_win_set_config, 0, { win = other_tp_win, split = 'right' })
   3474      )
   3475      -- Shouldn't move the old curwin from before we entered the cmdwin either.
   3476      eq(
   3477        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
   3478        pcall_err(api.nvim_win_set_config, old_curwin, { win = other_tp_win, split = 'right' })
   3479      )
   3480    end)
   3481 
   3482    it('minimal style persists through float-to-split and buffer change #37067', function()
   3483      -- Set all options globally
   3484      command('set number relativenumber cursorline cursorcolumn spell list')
   3485      command('set signcolumn=yes colorcolumn=80 statuscolumn=%l foldcolumn=2')
   3486      local buf1 = api.nvim_create_buf(false, true)
   3487      local win = api.nvim_open_win(buf1, true, {
   3488        relative = 'editor',
   3489        width = 10,
   3490        height = 10,
   3491        row = 5,
   3492        col = 5,
   3493        style = 'minimal',
   3494      })
   3495      -- Convert to split then change buffer
   3496      api.nvim_win_set_config(win, { split = 'below', win = -1 })
   3497      local buf2 = api.nvim_create_buf(false, true)
   3498      api.nvim_win_set_buf(win, buf2)
   3499      eq(false, api.nvim_get_option_value('number', { win = win }))
   3500      eq(false, api.nvim_get_option_value('relativenumber', { win = win }))
   3501      eq(false, api.nvim_get_option_value('cursorline', { win = win }))
   3502      eq(false, api.nvim_get_option_value('cursorcolumn', { win = win }))
   3503      eq(false, api.nvim_get_option_value('spell', { win = win }))
   3504      eq(false, api.nvim_get_option_value('list', { win = win }))
   3505      eq('0', api.nvim_get_option_value('foldcolumn', { win = win }))
   3506      eq('auto', api.nvim_get_option_value('signcolumn', { win = win }))
   3507      eq('', api.nvim_get_option_value('colorcolumn', { win = win }))
   3508      eq('', api.nvim_get_option_value('statuscolumn', { win = win }))
   3509    end)
   3510  end)
   3511 end)