neovim/test/functional/ui/multibyte_spec.lua
Michael Hoffmann 0ed8b12a07 transstr_buf: fix length comparison #8681
closes #8466
closes #8664
Regression by 0d7daaad98.

- Fix length comparison.
- Fix loop(s) which iterated over all fields of array `pcc` even if it
  was not filled up (try unicode 0x9f as statusline character).

Note about the tests:
- To input unicode with more than two hex digits you can use <C-v>U...:
  a + U+fe20: a︠
  a + U+fe20 + U+fe21: a︠︡
2018-07-10 21:57:26 +02:00

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local helpers = require('test.functional.helpers')(after_each)
local Screen = require('test.functional.ui.screen')
local clear = helpers.clear
local command = helpers.command
local feed = helpers.feed
local feed_command = helpers.feed_command
local insert = helpers.insert
local funcs = helpers.funcs
describe("multibyte rendering", function()
local screen
before_each(function()
clear()
screen = Screen.new(60, 6)
screen:attach({rgb=true})
screen:set_default_attr_ids({
[1] = {bold = true, foreground = Screen.colors.Blue1},
[2] = {background = Screen.colors.WebGray},
[3] = {background = Screen.colors.LightMagenta},
[4] = {bold = true},
})
end)
after_each(function()
screen:detach()
end)
it("works with composed char at start of line", function()
insert([[
̊
x]])
feed("gg")
-- verify the modifier infact is alone
feed_command("ascii")
screen:expect([[
^ ̊ |
x |
{1:~ }|
{1:~ }|
{1:~ }|
< ̊> 778, Hex 030a, Octal 1412 |
]])
-- a char inserted before will spontaneously merge with it
feed("ia<esc>")
feed_command("ascii")
screen:expect([[
^å |
x |
{1:~ }|
{1:~ }|
{1:~ }|
<a> 97, Hex 61, Octal 141 < ̊> 778, Hex 030a, Octal 1412 |
]])
end)
it('works with doublewidth char at end of line', function()
feed('58a <esc>a馬<esc>')
screen:expect([[
^馬|
{1:~ }|
{1:~ }|
{1:~ }|
{1:~ }|
|
]])
feed('i <esc>')
screen:expect([[
^ {1:>}|
馬 |
{1:~ }|
{1:~ }|
{1:~ }|
|
]])
feed('l')
screen:expect([[
{1:>}|
^馬 |
{1:~ }|
{1:~ }|
{1:~ }|
|
]])
end)
it('clears left half of double-width char when right half is overdrawn', function()
feed('o-馬<esc>ggiab ')
screen:expect([[
ab ^ |
-馬 |
{1:~ }|
{1:~ }|
{1:~ }|
{4:-- INSERT --} |
]])
-- check double-with char is temporarily hidden when overlapped
funcs.complete(4, {'xx', 'yy'})
screen:expect([[
ab xx^ |
- {2: xx } |
{1:~ }{3: yy }{1: }|
{1:~ }|
{1:~ }|
{4:-- INSERT --} |
]])
-- check it is properly restored
feed('z')
screen:expect([[
ab xxz^ |
-馬 |
{1:~ }|
{1:~ }|
{1:~ }|
{4:-- INSERT --} |
]])
end)
end)
describe('multibyte rendering: statusline', function()
local screen
before_each(function()
clear()
screen = Screen.new(40, 4)
screen:attach()
command('set laststatus=2')
end)
after_each(function()
screen:detach()
end)
it('last char shows (multibyte)', function()
command('set statusline=你好')
screen:expect([[
^ |
~ |
你好 |
|
]])
end)
it('last char shows (single byte)', function()
command('set statusline=abc')
screen:expect([[
^ |
~ |
abc |
|
]])
end)
it('unicode control points', function()
command('set statusline=Ÿ')
screen:expect([[
^ |
~ |
<9f> |
|
]])
end)
it('MAX_MCO (6) unicode combination points', function()
command('set statusline=o̸⃯ᷰ⃐⃧⃝')
-- o + U+1DF0 + U+20EF + U+0338 + U+20D0 + U+20E7 + U+20DD
screen:expect([[
^ |
~ |
o̸⃯ᷰ⃐⃧⃝ |
|
]])
end)
it('non-printable followed by MAX_MCO unicode combination points', function()
command('set statusline=Ÿ̸⃯ᷰ⃐⃧⃝')
-- U+9F + U+1DF0 + U+20EF + U+0338 + U+20D0 + U+20E7 + U+20DD
screen:expect([[
^ |
~ |
<9f><1df0><20ef><0338><20d0><20e7><20dd>|
|
]])
end)
end)