path: root/test/functional/api/window_spec.lua

local helpers = require('test.functional.helpers')(after_each)
local Screen = require('test.functional.ui.screen')
local clear, curbuf, curbuf_contents, curwin, eq, neq, matches, ok, feed, insert, eval =
  helpers.clear,
  helpers.api.nvim_get_current_buf,
  helpers.curbuf_contents,
  helpers.api.nvim_get_current_win,
  helpers.eq,
  helpers.neq,
  helpers.matches,
  helpers.ok,
  helpers.feed,
  helpers.insert,
  helpers.eval
local poke_eventloop = helpers.poke_eventloop
local exec = helpers.exec
local exec_lua = helpers.exec_lua
local fn = helpers.fn
local request = helpers.request
local NIL = vim.NIL
local api = helpers.api
local command = helpers.command
local pcall_err = helpers.pcall_err
local assert_alive = helpers.assert_alive

describe('API/win', function()
  before_each(clear)

  describe('get_buf', function()
    it('works', function()
      eq(curbuf(), api.nvim_win_get_buf(api.nvim_list_wins()[1]))
      command('new')
      api.nvim_set_current_win(api.nvim_list_wins()[2])
      eq(curbuf(), api.nvim_win_get_buf(api.nvim_list_wins()[2]))
      neq(
        api.nvim_win_get_buf(api.nvim_list_wins()[1]),
        api.nvim_win_get_buf(api.nvim_list_wins()[2])
      )
    end)
  end)

  describe('set_buf', function()
    it('works', function()
      command('new')
      local windows = api.nvim_list_wins()
      neq(api.nvim_win_get_buf(windows[2]), api.nvim_win_get_buf(windows[1]))
      api.nvim_win_set_buf(windows[2], api.nvim_win_get_buf(windows[1]))
      eq(api.nvim_win_get_buf(windows[2]), api.nvim_win_get_buf(windows[1]))
    end)

    it('validates args', function()
      eq('Invalid buffer id: 23', pcall_err(api.nvim_win_set_buf, api.nvim_get_current_win(), 23))
      eq('Invalid window id: 23', pcall_err(api.nvim_win_set_buf, 23, api.nvim_get_current_buf()))
    end)

    it('disallowed in cmdwin if win=cmdwin_{old_cur}win or buf=cmdwin_buf', function()
      local new_buf = api.nvim_create_buf(true, true)
      local old_win = api.nvim_get_current_win()
      local new_win = api.nvim_open_win(new_buf, false, {
        relative = 'editor',
        row = 10,
        col = 10,
        width = 50,
        height = 10,
      })
      feed('q:')
      eq(
        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
        pcall_err(api.nvim_win_set_buf, 0, new_buf)
      )
      eq(
        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
        pcall_err(api.nvim_win_set_buf, old_win, new_buf)
      )
      eq(
        'E11: Invalid in command-line window; <CR> executes, CTRL-C quits',
        pcall_err(api.nvim_win_set_buf, new_win, 0)
      )
      matches(
        'E11: Invalid in command%-line window; <CR> executes, CTRL%-C quits$',
        pcall_err(
          exec_lua,
          [[
           local cmdwin_buf = vim.api.nvim_get_current_buf()
           local new_win, new_buf = ...
           vim.api.nvim_buf_call(new_buf, function()
             vim.api.nvim_win_set_buf(new_win, cmdwin_buf)
           end)
         ]],
          new_win,
          new_buf
        )
      )
      matches(
        'E11: Invalid in command%-line window; <CR> executes, CTRL%-C quits$',
        pcall_err(
          exec_lua,
          [[
           local cmdwin_win = vim.api.nvim_get_current_win()
           local new_win, new_buf = ...
           vim.api.nvim_win_call(new_win, function()
             vim.api.nvim_win_set_buf(cmdwin_win, new_buf)
           end)
         ]],
          new_win,
          new_buf
        )
      )

      local next_buf = api.nvim_create_buf(true, true)
      api.nvim_win_set_buf(new_win, next_buf)
      eq(next_buf, api.nvim_win_get_buf