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neovim/test/functional/api/buffer_updates_spec.lua

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local helpers = require('test.functional.helpers')(after_each)
local clear = helpers.clear
local eq, ok = helpers.eq, helpers.ok
local buffer, command, eval, nvim, next_msg = helpers.buffer,
helpers.command, helpers.eval, helpers.nvim, helpers.next_msg
local nvim_prog = helpers.nvim_prog
local pcall_err = helpers.pcall_err
local sleep = helpers.sleep
local write_file = helpers.write_file
local origlines = {"original line 1",
"original line 2",
"original line 3",
"original line 4",
"original line 5",
"original line 6"}
local function expectn(name, args)
-- expect the next message to be the specified notification event
eq({'notification', name, args}, next_msg())
end
local function sendkeys(keys)
nvim('input', keys)
-- give nvim some time to process msgpack requests before possibly sending
-- more key presses - otherwise they all pile up in the queue and get
-- processed at once
local ntime = os.clock() + 0.1
repeat until os.clock() > ntime
end
local function open(activate, lines)
local filename = helpers.tmpname()
write_file(filename, table.concat(lines, "\n").."\n", true)
command('edit ' .. filename)
local b = nvim('get_current_buf')
-- what is the value of b:changedtick?
local tick = eval('b:changedtick')
-- Enable buffer events, ensure that the nvim_buf_lines_event messages
-- arrive as expected
if activate then
local firstline = 0
ok(buffer('attach', b, true, {}))
expectn('nvim_buf_lines_event', {b, tick, firstline, -1, lines, false})
end
return b, tick, filename
end
local function editoriginal(activate, lines)
if not lines then
lines = origlines
end
-- load up the file with the correct contents
clear()
return open(activate, lines)
end
local function reopen(buf, expectedlines)
ok(buffer('detach', buf))
expectn('nvim_buf_detach_event', {buf})
-- for some reason the :edit! increments tick by 2
command('edit!')
local tick = eval('b:changedtick')
ok(buffer('attach', buf, true, {}))
local firstline = 0
expectn('nvim_buf_lines_event', {buf, tick, firstline, -1, expectedlines, false})
command('normal! gg')
return tick
end
local function reopenwithfolds(b)
-- discard any changes to the buffer
local tick = reopen(b, origlines)
-- use markers for folds, make all folds open by default
command('setlocal foldmethod=marker foldlevel=20 commentstring=/*%s*/')
-- add a fold
command('2,4fold')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 4, {'original line 2/*{{{*/',
'original line 3',
'original line 4/*}}}*/'}, false})
-- make a new fold that wraps lines 1-6
command('1,6fold')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 6, {'original line 1/*{{{*/',
'original line 2/*{{{*/',
'original line 3',
'original line 4/*}}}*/',
'original line 5',
'original line 6/*}}}*/'}, false})
return tick
end
describe('API: buffer events:', function()
before_each(clear)
it('when lines are added', function()
local b, tick = editoriginal(true)
-- add a new line at the start of the buffer
command('normal! GyyggP')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 0, {'original line 6'}, false})
-- add multiple lines at the start of the file
command('normal! GkkyGggP')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 0, {'original line 4',
'original line 5',
'original line 6'}, false})
-- add one line to the middle of the file, several times
command('normal! ggYjjp')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 3, 3, {'original line 4'}, false})
command('normal! p')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 4, 4, {'original line 4'}, false})
command('normal! p')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 5, 5, {'original line 4'}, false})
-- add multiple lines to the middle of the file
command('normal! gg4Yjjp')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 3, 3, {'original line 4',
'original line 5',
'original line 6',
'original line 4'}, false})
-- add one line to the end of the file
command('normal! ggYGp')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 17, 17, {'original line 4'}, false})
-- add one line to the end of the file, several times
command('normal! ggYGppp')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 18, 18, {'original line 4'}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 19, 19, {'original line 4'}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 20, 20, {'original line 4'}, false})
-- add several lines to the end of the file, several times
command('normal! gg4YGp')
command('normal! Gp')
command('normal! Gp')
local firstfour = {'original line 4',
'original line 5',
'original line 6',
'original line 4'}
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 21, 21, firstfour, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 25, 25, firstfour, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 29, 29, firstfour, false})
-- delete the current buffer to turn off buffer events
command('bdelete!')
expectn('nvim_buf_detach_event', {b})
-- add a line at the start of an empty file
command('enew')
tick = eval('b:changedtick')
local b2 = nvim('get_current_buf')
ok(buffer('attach', b2, true, {}))
expectn('nvim_buf_lines_event', {b2, tick, 0, -1, {""}, false})
eval('append(0, ["new line 1"])')
tick = tick + 1
expectn('nvim_buf_lines_event', {b2, tick, 0, 0, {'new line 1'}, false})
-- turn off buffer events manually
buffer('detach', b2)
expectn('nvim_buf_detach_event', {b2})
-- add multiple lines to a blank file
command('enew!')
local b3 = nvim('get_current_buf')
ok(buffer('attach', b3, true, {}))
tick = eval('b:changedtick')
expectn('nvim_buf_lines_event', {b3, tick, 0, -1, {""}, false})
eval('append(0, ["new line 1", "new line 2", "new line 3"])')
tick = tick + 1
expectn('nvim_buf_lines_event', {b3, tick, 0, 0, {'new line 1',
'new line 2',
'new line 3'}, false})
-- use the API itself to add a line to the start of the buffer
buffer('set_lines', b3, 0, 0, true, {'New First Line'})
tick = tick + 1
expectn('nvim_buf_lines_event', {b3, tick, 0, 0, {"New First Line"}, false})
end)
it('when lines are removed', function()
local b, tick = editoriginal(true)
-- remove one line from start of file
command('normal! dd')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {}, false})
-- remove multiple lines from the start of the file
command('normal! 4dd')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 4, {}, false})
-- remove multiple lines from middle of file
tick = reopen(b, origlines)
command('normal! jj3dd')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 2, 5, {}, false})
-- remove one line from the end of the file
tick = reopen(b, origlines)
command('normal! Gdd')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 5, 6, {}, false})
-- remove multiple lines from the end of the file
tick = reopen(b, origlines)
command('normal! 4G3dd')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 3, 6, {}, false})
-- pretend to remove heaps lines from the end of the file but really
-- just remove two
tick = reopen(b, origlines)
command('normal! Gk5dd')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 4, 6, {}, false})
end)
it('when text is changed', function()
local b, tick = editoriginal(true)
-- some normal text editing
command('normal! A555')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {'original line 1555'}, false})
command('normal! jj8X')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 2, 3, {'origin3'}, false})
-- modify multiple lines at once using visual block mode
tick = reopen(b, origlines)
command('normal! jjw')
sendkeys('<C-v>jjllx')
tick = tick + 1
expectn('nvim_buf_lines_event',
{b, tick, 2, 5, {'original e 3', 'original e 4', 'original e 5'}, false})
-- replace part of a line line using :s
tick = reopen(b, origlines)
command('3s/line 3/foo/')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 2, 3, {'original foo'}, false})
-- replace parts of several lines line using :s
tick = reopen(b, origlines)
command('%s/line [35]/foo/')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 2, 5, {'original foo',
'original line 4',
'original foo'}, false})
-- type text into the first line of a blank file, one character at a time
command('bdelete!')
tick = 2
expectn('nvim_buf_detach_event', {b})
local bnew = nvim('get_current_buf')
ok(buffer('attach', bnew, true, {}))
expectn('nvim_buf_lines_event', {bnew, tick, 0, -1, {''}, false})
sendkeys('i')
sendkeys('h')
sendkeys('e')
sendkeys('l')
sendkeys('l')
sendkeys('o\nworld')
expectn('nvim_buf_lines_event', {bnew, tick + 1, 0, 1, {'h'}, false})
expectn('nvim_buf_lines_event', {bnew, tick + 2, 0, 1, {'he'}, false})
expectn('nvim_buf_lines_event', {bnew, tick + 3, 0, 1, {'hel'}, false})
expectn('nvim_buf_lines_event', {bnew, tick + 4, 0, 1, {'hell'}, false})
expectn('nvim_buf_lines_event', {bnew, tick + 5, 0, 1, {'hello'}, false})
expectn('nvim_buf_lines_event', {bnew, tick + 6, 0, 1, {'hello', ''}, false})
expectn('nvim_buf_lines_event', {bnew, tick + 7, 1, 2, {'world'}, false})
end)
it('when lines are replaced', function()
local b, tick = editoriginal(true)
-- blast away parts of some lines with visual mode
command('normal! jjwvjjllx')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 2, 3, {'original '}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 3, 4, {}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 3, 4, {'e 5'}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 2, 3, {'original e 5'}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 3, 4, {}, false})
-- blast away a few lines using :g
tick = reopen(b, origlines)
command('global/line [35]/delete')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 2, 3, {}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 3, 4, {}, false})
end)
it('when lines are filtered', function()
-- Test filtering lines with !cat
local b, tick = editoriginal(true, {"A", "C", "E", "B", "D", "F"})
command('silent 2,5!cat')
-- the change comes through as two changes:
-- 1) addition of the new lines after the filtered lines
-- 2) removal of the original lines
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 5, 5, {"C", "E", "B", "D"}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 5, {}, false})
end)
it('when you use "o"', function()
local b, tick = editoriginal(true, {'AAA', 'BBB'})
command('set noautoindent nosmartindent')
-- use 'o' to start a new line from a line with no indent
command('normal! o')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 1, {""}, false})
-- undo the change, indent line 1 a bit, and try again
command('undo')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 2, {}, false})
tick = tick + 1
expectn('nvim_buf_changedtick_event', {b, tick})
command('set autoindent')
command('normal! >>')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {"\tAAA"}, false})
command('normal! ommm')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 1, {"\t"}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 2, {"\tmmm"}, false})
-- undo the change, and try again with 'O'
command('undo')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 2, {'\t'}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 2, {}, false})
tick = tick + 1
expectn('nvim_buf_changedtick_event', {b, tick})
command('normal! ggOmmm')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 0, {"\t"}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {"\tmmm"}, false})
end)
it('deactivates if the buffer is changed externally', function()
-- Test changing file from outside vim and reloading using :edit
local lines = {"Line 1", "Line 2"};
local b, tick, filename = editoriginal(true, lines)
command('normal! x')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {'ine 1'}, false})
command('undo')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {'Line 1'}, false})
tick = tick + 1
expectn('nvim_buf_changedtick_event', {b, tick})
-- change the file directly
write_file(filename, "another line\n", true, true)
-- reopen the file and watch buffer events shut down
command('edit')
expectn('nvim_buf_detach_event', {b})
end)
it('channel can watch many buffers at once', function()
-- edit 3 buffers, make sure they all have windows visible so that when we
-- move between buffers, none of them are unloaded
local b1, tick1 = editoriginal(true, {'A1', 'A2'})
local b1nr = eval('bufnr("")')
command('split')
local b2, tick2 = open(true, {'B1', 'B2'})
local b2nr = eval('bufnr("")')
command('split')
local b3, tick3 = open(true, {'C1', 'C2'})
local b3nr = eval('bufnr("")')
-- make a new window for moving between buffers
command('split')
command('b'..b1nr)
command('normal! x')
tick1 = tick1 + 1
expectn('nvim_buf_lines_event', {b1, tick1, 0, 1, {'1'}, false})
command('undo')
tick1 = tick1 + 1
expectn('nvim_buf_lines_event', {b1, tick1, 0, 1, {'A1'}, false})
tick1 = tick1 + 1
expectn('nvim_buf_changedtick_event', {b1, tick1})
command('b'..b2nr)
command('normal! x')
tick2 = tick2 + 1
expectn('nvim_buf_lines_event', {b2, tick2, 0, 1, {'1'}, false})
command('undo')
tick2 = tick2 + 1
expectn('nvim_buf_lines_event', {b2, tick2, 0, 1, {'B1'}, false})
tick2 = tick2 + 1
expectn('nvim_buf_changedtick_event', {b2, tick2})
command('b'..b3nr)
command('normal! x')
tick3 = tick3 + 1
expectn('nvim_buf_lines_event', {b3, tick3, 0, 1, {'1'}, false})
command('undo')
tick3 = tick3 + 1
expectn('nvim_buf_lines_event', {b3, tick3, 0, 1, {'C1'}, false})
tick3 = tick3 + 1
expectn('nvim_buf_changedtick_event', {b3, tick3})
end)
it('does not get confused if enabled/disabled many times', function()
local channel = nvim('get_api_info')[1]
local b, tick = editoriginal(false)
-- Enable buffer events many times.
ok(buffer('attach', b, true, {}))
ok(buffer('attach', b, true, {}))
ok(buffer('attach', b, true, {}))
ok(buffer('attach', b, true, {}))
ok(buffer('attach', b, true, {}))
expectn('nvim_buf_lines_event', {b, tick, 0, -1, origlines, false})
eval('rpcnotify('..channel..', "Hello There")')
expectn('Hello There', {})
-- Disable buffer events many times.
ok(buffer('detach', b))
ok(buffer('detach', b))
ok(buffer('detach', b))
ok(buffer('detach', b))
ok(buffer('detach', b))
expectn('nvim_buf_detach_event', {b})
eval('rpcnotify('..channel..', "Hello Again")')
expectn('Hello Again', {})
end)
it('can notify several channels at once', function()
clear()
-- create several new sessions, in addition to our main API
local sessions = {}
local pipe = helpers.new_pipename()
eval("serverstart('"..pipe.."')")
sessions[1] = helpers.connect(pipe)
sessions[2] = helpers.connect(pipe)
sessions[3] = helpers.connect(pipe)
local function request(sessionnr, method, ...)
local status, rv = sessions[sessionnr]:request(method, ...)
if not status then
error(rv[2])
end
return rv
end
local function wantn(sessionid, name, args)
local session = sessions[sessionid]
eq({'notification', name, args}, session:next_message(10000))
end
-- Edit a new file, but don't enable buffer events.
local lines = {'AAA', 'BBB'}
local b, tick = open(false, lines)
-- Enable buffer events for sessions 1, 2 and 3.
ok(request(1, 'nvim_buf_attach', b, true, {}))
ok(request(2, 'nvim_buf_attach', b, true, {}))
ok(request(3, 'nvim_buf_attach', b, true, {}))
wantn(1, 'nvim_buf_lines_event', {b, tick, 0, -1, lines, false})
wantn(2, 'nvim_buf_lines_event', {b, tick, 0, -1, lines, false})
wantn(3, 'nvim_buf_lines_event', {b, tick, 0, -1, lines, false})
-- Change the buffer.
command('normal! x')
tick = tick + 1
wantn(1, 'nvim_buf_lines_event', {b, tick, 0, 1, {'AA'}, false})
wantn(2, 'nvim_buf_lines_event', {b, tick, 0, 1, {'AA'}, false})
wantn(3, 'nvim_buf_lines_event', {b, tick, 0, 1, {'AA'}, false})
-- Stop watching on channel 1.
ok(request(1, 'nvim_buf_detach', b))
wantn(1, 'nvim_buf_detach_event', {b})
-- Undo the change to buffer 1.
command('undo')
tick = tick + 1
wantn(2, 'nvim_buf_lines_event', {b, tick, 0, 1, {'AAA'}, false})
wantn(3, 'nvim_buf_lines_event', {b, tick, 0, 1, {'AAA'}, false})
tick = tick + 1
wantn(2, 'nvim_buf_changedtick_event', {b, tick})
wantn(3, 'nvim_buf_changedtick_event', {b, tick})
-- make sure there are no other pending nvim_buf_lines_event messages going to
-- channel 1
local channel1 = request(1, 'nvim_get_api_info')[1]
eval('rpcnotify('..channel1..', "Hello")')
wantn(1, 'Hello', {})
-- close the buffer and channels 2 and 3 should get a nvim_buf_detach_event
-- notification
command('edit')
wantn(2, 'nvim_buf_detach_event', {b})
wantn(3, 'nvim_buf_detach_event', {b})
-- make sure there are no other pending nvim_buf_lines_event messages going to
-- channel 1
channel1 = request(1, 'nvim_get_api_info')[1]
eval('rpcnotify('..channel1..', "Hello Again")')
wantn(1, 'Hello Again', {})
end)
it('works with :diffput and :diffget', function()
local b1, tick1 = editoriginal(true, {"AAA", "BBB"})
local channel = nvim('get_api_info')[1]
command('diffthis')
command('rightbelow vsplit')
local b2, tick2 = open(true, {"BBB", "CCC"})
command('diffthis')
-- go back to first buffer, and push the 'AAA' line to the second buffer
command('1wincmd w')
command('normal! gg')
command('diffput')
tick2 = tick2 + 1
expectn('nvim_buf_lines_event', {b2, tick2, 0, 0, {"AAA"}, false})
-- use :diffget to grab the other change from buffer 2
command('normal! G')
command('diffget')
tick1 = tick1 + 1
expectn('nvim_buf_lines_event', {b1, tick1, 2, 2, {"CCC"}, false})
eval('rpcnotify('..channel..', "Goodbye")')
expectn('Goodbye', {})
end)
it('works with :sort', function()
-- test for :sort
local b, tick = editoriginal(true, {"B", "D", "C", "A", "E"})
command('%sort')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 5, {"A", "B", "C", "D", "E"}, false})
end)
it('works with :left', function()
local b, tick = editoriginal(true, {" A", " B", "B", "\tB", "\t\tC"})
command('2,4left')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 4, {"B", "B", "B"}, false})
end)
it('works with :right', function()
local b, tick = editoriginal(true, {" A",
"\t B",
"\t \tBB",
" \tB",
"\t\tC"})
command('set ts=2 et')
command('2,4retab')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 4, {" B", " BB", " B"}, false})
end)
it('works with :move', function()
local b, tick = editoriginal(true, origlines)
-- move text down towards the end of the file
command('2,3move 4')
tick = tick + 2
expectn('nvim_buf_lines_event', {b, tick, 4, 4, {"original line 2",
"original line 3"}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 3, {}, false})
-- move text up towards the start of the file
tick = reopen(b, origlines)
command('4,5move 2')
tick = tick + 2
expectn('nvim_buf_lines_event', {b, tick, 2, 2, {"original line 4",
"original line 5"}, false})
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 5, 7, {}, false})
end)
it('when you manually add/remove folds', function()
local b = editoriginal(true)
local tick = reopenwithfolds(b)
-- delete the inner fold
command('normal! zR3Gzd')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 1, 4, {'original line 2',
'original line 3',
'original line 4'}, false})
-- delete the outer fold
command('normal! zd')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 6, origlines, false})
-- discard changes and put the folds back
tick = reopenwithfolds(b)
-- remove both folds at once
command('normal! ggzczD')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 6, origlines, false})
-- discard changes and put the folds back
tick = reopenwithfolds(b)
-- now delete all folds at once
command('normal! zE')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 6, origlines, false})
-- create a fold from line 4 to the end of the file
command('normal! 4GA/*{{{*/')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 3, 4, {'original line 4/*{{{*/'}, false})
-- delete the fold which only has one marker
command('normal! Gzd')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 3, 6, {'original line 4',
'original line 5',
'original line 6'}, false})
end)
it('detaches if the buffer is closed', function()
local b, tick = editoriginal(true, {'AAA'})
local channel = nvim('get_api_info')[1]
-- Test that buffer events are working.
command('normal! x')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {'AA'}, false})
command('undo')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {'AAA'}, false})
tick = tick + 1
expectn('nvim_buf_changedtick_event', {b, tick})
-- close our buffer and create a new one
command('bdelete')
command('enew')
expectn('nvim_buf_detach_event', {b})
-- Reopen the original buffer, make sure there are no buffer events sent.
command('b1')
command('normal! x')
eval('rpcnotify('..channel..', "Hello There")')
expectn('Hello There', {})
end)
it(':edit! (reload) causes detach #9642', function()
local b, tick = editoriginal(true, {'AAA', 'BBB'})
command('set undoreload=1')
command('normal! x')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {'AA'}, false})
command('edit!')
expectn('nvim_buf_detach_event', {b})
end)
it(':enew! does not detach hidden buffer', function()
local b, tick = editoriginal(true, {'AAA', 'BBB'})
local channel = nvim('get_api_info')[1]
command('set undoreload=1 hidden')
command('normal! x')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {'AA'}, false})
command('enew!')
eval('rpcnotify('..channel..', "Hello There")')
expectn('Hello There', {})
end)
it('stays attached if the buffer is hidden', function()
local b, tick = editoriginal(true, {'AAA'})
local channel = nvim('get_api_info')[1]
-- Test that buffer events are working.
command('normal! x')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {'AA'}, false})
command('undo')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {'AAA'}, false})
tick = tick + 1
expectn('nvim_buf_changedtick_event', {b, tick})
-- Close our buffer by creating a new one.
command('set hidden')
command('enew')
-- Assert that no nvim_buf_detach_event is sent.
eval('rpcnotify('..channel..', "Hello There")')
expectn('Hello There', {})
-- Reopen the original buffer, assert that buffer events are still active.
command('b1')
command('normal! x')
tick = tick + 1
expectn('nvim_buf_lines_event', {b, tick, 0, 1, {'AA'}, false})
end)
it('detaches if the buffer is unloaded/deleted/wiped', function()
-- start with a blank nvim
clear()
-- need to make a new window with a buffer because :bunload doesn't let you
-- unload the last buffer
for _, cmd in ipairs({'bunload', 'bdelete', 'bwipeout'}) do
command('new')
-- open a brand spanking new file
local b = open(true, {'AAA'})
-- call :bunload or whatever the command is, and then check that we
-- receive a nvim_buf_detach_event
command(cmd)
expectn('nvim_buf_detach_event', {b})
end
end)
it('does not send the buffer content if not requested', function()
clear()
local b, tick = editoriginal(false)
ok(buffer('attach', b, false, {}))
expectn('nvim_buf_changedtick_event', {b, tick})
end)
it('returns a proper error on nonempty options dict', function()
clear()
local b = editoriginal(false)
eq("Invalid 'opts' key: 'builtin'", pcall_err(buffer, 'attach', b, false, {builtin="asfd"}))
end)
it('nvim_buf_attach returns response after delay #8634', function()
clear()
sleep(250)
-- response
eq(true, helpers.request('nvim_buf_attach', 0, false, {}))
-- notification
eq({
[1] = 'notification',
[2] = 'nvim_buf_changedtick_event',
[3] = {
[1] = { id = 1 },
[2] = 2 }, }, next_msg())
end)
end)
describe('API: buffer events:', function()
before_each(function()
clear()
end)
local function lines_subset(first, second)
for i = 1,#first do
-- need to ignore trailing spaces
if first[i]:gsub(' +$', '') ~= second[i]:gsub(' +$', '') then
return false
end
end
return true
end
local function lines_equal(f, s)
return lines_subset(f, s) and lines_subset(s, f)
end
local function assert_match_somewhere(expected_lines, buffer_lines)
local msg = next_msg()
while(msg ~= nil) do
local event = msg[2]
if event == 'nvim_buf_lines_event' then
local args = msg[3]
local starts = args[3]
local newlines = args[5]
-- Size of the contained nvim instance is 23 lines, this might change
-- with the test setup. Note updates are contiguous.
assert(#newlines <= 23)
for i = 1,#newlines do
buffer_lines[starts + i] = newlines[i]
end
-- we don't compare the msg area of the embedded nvim, it's too flakey
buffer_lines[23] = nil
if lines_equal(buffer_lines, expected_lines) then
-- OK
return
end
end
msg = next_msg()
end
assert(false, 'did not match/receive expected nvim_buf_lines_event lines')
end
it('when :terminal lines change', function()
local buffer_lines = {}
local expected_lines = {}
command('terminal "'..nvim_prog..'" -u NONE -i NONE -n -c "set shortmess+=A"')
local b = nvim('get_current_buf')
ok(buffer('attach', b, true, {}))
for _ = 1,22 do
table.insert(expected_lines,'~')
end
expected_lines[1] = ''
expected_lines[22] = ('tmp_terminal_nvim'..(' '):rep(45)
..'0,0-1 All')
sendkeys('i:e tmp_terminal_nvim<Enter>')
assert_match_somewhere(expected_lines, buffer_lines)
expected_lines[1] = 'Blarg'
expected_lines[22] = ('tmp_terminal_nvim [+]'..(' '):rep(41)
..'1,6 All')
sendkeys('iBlarg')
assert_match_somewhere(expected_lines, buffer_lines)
for i = 1,21 do
expected_lines[i] = 'xyz'
end
expected_lines[22] = ('tmp_terminal_nvim [+]'..(' '):rep(41)
..'31,4 Bot')
local s = string.rep('\nxyz', 30)
sendkeys(s)
assert_match_somewhere(expected_lines, buffer_lines)
end)
end)
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