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e254688016
Problem: Terminal doesn't handle ED 3 (clear scrollback) properly. Solution: Add vterm callback for sb_clear(). Also fix another problem that scrollback lines may be duplicated when pushing to scrollback immediately after reducing window height, as can be seen in the changes to test/functional/terminal/window_spec.lua.
188 lines
6.4 KiB
Lua
188 lines
6.4 KiB
Lua
local t = require('test.testutil')
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local n = require('test.functional.testnvim')()
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local tt = require('test.functional.testterm')
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local clear, eq, api = n.clear, t.eq, n.api
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local feed = n.feed
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local feed_data = tt.feed_data
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local enter_altscreen = tt.enter_altscreen
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local exit_altscreen = tt.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 = tt.setup_screen()
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feed_data({
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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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'line6',
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'line7',
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'line8',
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'',
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})
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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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^ |
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{5:-- TERMINAL --} |
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]])
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enter_altscreen()
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screen:expect([[
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|*5
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^ |
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{5:-- TERMINAL --} |
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]])
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eq(10, api.nvim_buf_line_count(0))
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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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|*3
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]])
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-- ED 3 is no-op in altscreen
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feed_data('\027[3J')
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screen:expect_unchanged()
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end)
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describe('restores buffer state', function()
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local function test_exit_altscreen_restores_buffer_state()
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exit_altscreen()
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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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^ |
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{5:-- 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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it('after exit', function()
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test_exit_altscreen_restores_buffer_state()
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end)
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it('after ED 2 and ED 3 and exit', function()
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feed_data('\027[H\027[2J\027[3J')
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screen:expect([[
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^ |
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|*5
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{5:-- TERMINAL --} |
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]])
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test_exit_altscreen_restores_buffer_state()
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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({
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'line9',
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'line10',
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'line11',
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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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'',
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})
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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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^ |
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{5:-- 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, api.nvim_buf_line_count(0))
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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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|*2
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rows: 4, cols: 50 |
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^ |
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{5:-- 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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^ |
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|*2
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rows: 4, cols: 50 |
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]])
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eq(9, api.nvim_buf_line_count(0))
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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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screen:expect(t.is_os('win') and [[
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line6 |
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line7 |
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line8 |
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^ |
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{5:-- TERMINAL --} |
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]] or [[
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line5 |
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line6 |
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line7 |
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^line8 |
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{5:-- 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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