neovim/test/functional/terminal/altscreen_spec.lua
dundargoc 736c36c02f
test: introduce skip() #21010
This is essentially a convenience wrapper around the `pending()`
function, similar to `skip_fragile()` but more general-purpose.

Also remove `pending_win32` function as it can be replaced by
`skip(iswin())`.
2022-11-13 05:52:19 -08:00

156 lines
5.9 KiB
Lua

local helpers = require('test.functional.helpers')(after_each)
local thelpers = require('test.functional.terminal.helpers')
local clear, eq, curbuf = helpers.clear, helpers.eq, helpers.curbuf
local feed = helpers.feed
local feed_data = thelpers.feed_data
local enter_altscreen = thelpers.enter_altscreen
local exit_altscreen = thelpers.exit_altscreen
if helpers.skip(helpers.iswin()) then return end
describe(':terminal altscreen', function()
local screen
before_each(function()
clear()
screen = thelpers.screen_setup()
feed_data({'line1', 'line2', 'line3', 'line4', 'line5', 'line6',
'line7', 'line8', ''})
screen:expect([[
line4 |
line5 |
line6 |
line7 |
line8 |
{1: } |
{3:-- TERMINAL --} |
]])
enter_altscreen()
screen:expect([[
|
|
|
|
|
{1: } |
{3:-- TERMINAL --} |
]])
eq(10, curbuf('line_count'))
end)
it('wont clear lines already in the scrollback', function()
feed('<c-\\><c-n>gg')
screen:expect([[
^tty ready |
line1 |
line2 |
line3 |
|
|
|
]])
end)
describe('on exit', function()
before_each(exit_altscreen)
it('restores buffer state', function()
screen:expect([[
line4 |
line5 |
line6 |
line7 |
line8 |
{1: } |
{3:-- TERMINAL --} |
]])
feed('<c-\\><c-n>gg')
screen:expect([[
^tty ready |
line1 |
line2 |
line3 |
line4 |
line5 |
|
]])
end)
end)
describe('with lines printed after the screen height limit', function()
before_each(function()
feed_data({'line9', 'line10', 'line11', 'line12', 'line13',
'line14', 'line15', 'line16', ''})
screen:expect([[
line12 |
line13 |
line14 |
line15 |
line16 |
{1: } |
{3:-- TERMINAL --} |
]])
end)
it('wont modify line count', function()
eq(10, curbuf('line_count'))
end)
it('wont modify lines in the scrollback', function()
feed('<c-\\><c-n>gg')
screen:expect([[
^tty ready |
line1 |
line2 |
line3 |
line12 |
line13 |
|
]])
end)
end)
describe('after height is decreased by 2', function()
local function wait_removal()
screen:try_resize(screen._width, screen._height - 2)
screen:expect([[
|
|
rows: 4, cols: 50 |
{1: } |
{3:-- TERMINAL --} |
]])
end
it('removes 2 lines from the bottom of the visible buffer', function()
wait_removal()
feed('<c-\\><c-n>4k')
screen:expect([[
^ |
|
|
rows: 4, cols: 50 |
|
]])
eq(9, curbuf('line_count'))
end)
describe('and after exit', function()
before_each(function()
wait_removal()
exit_altscreen()
end)
it('restore buffer state', function()
screen:expect([[
line5 |
line6 |
line7 |
line8 |
{3:-- TERMINAL --} |
]])
end)
end)
end)
end)