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158 lines
6.1 KiB
Lua
158 lines
6.1 KiB
Lua
local helpers = require('test.functional.helpers')
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local thelpers = require('test.functional.terminal.helpers')
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local clear, eq, curbuf = helpers.clear, helpers.eq, helpers.curbuf
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local feed = helpers.feed
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local feed_data = thelpers.feed_data
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local enter_altscreen = thelpers.enter_altscreen
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local exit_altscreen = thelpers.exit_altscreen
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describe('terminal altscreen', function()
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local screen
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before_each(function()
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clear()
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screen = thelpers.screen_setup()
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feed_data({'line1', 'line2', 'line3', 'line4', 'line5', 'line6',
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'line7', 'line8', ''})
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screen:expect([[
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line4 |
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line5 |
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line6 |
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line7 |
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line8 |
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{1: } |
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-- TERMINAL -- |
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]])
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enter_altscreen()
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screen:expect([[
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{1: } |
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-- TERMINAL -- |
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]])
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eq(10, curbuf('line_count'))
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end)
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it('wont clear lines already in the scrollback', function()
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feed('<c-\\><c-n>gg')
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screen:expect([[
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^tty ready |
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line1 |
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line2 |
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line3 |
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]])
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end)
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describe('on exit', function()
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before_each(exit_altscreen)
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it('restores buffer state', function()
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screen:expect([[
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line4 |
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line5 |
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line6 |
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line7 |
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line8 |
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{1: } |
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-- TERMINAL -- |
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]])
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feed('<c-\\><c-n>gg')
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screen:expect([[
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^tty ready |
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line1 |
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line2 |
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line3 |
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line4 |
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line5 |
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]])
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end)
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end)
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describe('with lines printed after the screen height limit', function()
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before_each(function()
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feed_data({'line9', 'line10', 'line11', 'line12', 'line13',
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'line14', 'line15', 'line16', ''})
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screen:expect([[
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line12 |
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line13 |
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line14 |
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line15 |
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line16 |
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{1: } |
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-- TERMINAL -- |
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]])
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end)
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it('wont modify line count', function()
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eq(10, curbuf('line_count'))
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end)
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it('wont modify lines in the scrollback', function()
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feed('<c-\\><c-n>gg')
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screen:expect([[
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^tty ready |
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line1 |
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line2 |
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line3 |
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line12 |
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line13 |
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]])
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end)
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end)
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describe('after height is decreased by 2', function()
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local function wait_removal()
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screen:try_resize(screen._width, screen._height - 2)
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screen:expect([[
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rows: 4, cols: 50 |
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{1: } |
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-- TERMINAL -- |
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]])
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end
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it('removes 2 lines from the bottom of the visible buffer', function()
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wait_removal()
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feed('<c-\\><c-n>4k')
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screen:expect([[
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^line3 |
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rows: 4, cols: 50 |
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]])
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eq(8, curbuf('line_count'))
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end)
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describe('and after exit', function()
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before_each(function()
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wait_removal()
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exit_altscreen()
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end)
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it('restore buffer state', function()
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-- FIXME(tarruda): Note that the last line was lost after restoring the
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-- screen. This is a libvterm bug: When the main screen is restored it
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-- seems to "cut" lines that would have been left below the new visible
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-- screen.
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screen:expect([[
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line4 |
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line5 |
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line6 |
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line7 |
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-- TERMINAL -- |
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]])
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end)
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end)
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end)
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end)
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