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, 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.ok,
  helpers.feed,
  helpers.insert,
  helpers.eval
local poke_eventloop = helpers.poke_eventloop
local exec = helpers.exec
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={old_}curwin or buf=curbuf', 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)
      )

      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(new_win))
    end)
  end)

  describe('{get,set}_cursor', function()
    it('works', function()
      eq({ 1, 0 }, api.nvim_win_get_cursor(0))
      command('normal ityping\027o  some text')
      eq('typing\n  some text', curbuf_contents())
      eq({ 2, 10 }, api.nvim_win_get_cursor(0))
      api.nvim_win_set_cursor(0, { 2, 6 })
      command('normal i dumb')
      eq('typing\n  some dumb text', curbuf_contents())
    end)

    it('does not leak memory when using invalid window ID with invalid pos', function()
      eq('Invalid window id: 1', pcall_err(api.nvim_win_set_cursor, 1, { 'b\na' }))
    end)

    it('updates the screen, and also when the window is unfocused', function()
      local screen = Screen.new(30, 9)
      screen:set_default_attr_ids({
        [1] = { bold = true, foreground = Screen.colors.Blue },
        [2] = { bold = true, reverse = true },
        [3] = { reverse = true },
      })
      screen:attach()

      insert('prologue')
      feed('100o<esc>')
      insert('epilogue')
      local win = curwin()
      feed('gg')

      screen:expect {
        grid = [[
        ^prologue                      |
                                      |*8
      ]],
      }
      -- cursor position is at beginning
      eq({ 1, 0 }, api.nvim_win_get_cursor(win))

      -- move cursor to end
      api.nvim_win_set_cursor(win, { 101