neovim/test/functional/provider/python3_spec.lua
Justin M. Keyes 189c5abeba provider/RPC: apply_autocmds_group(): fix double-free
During provider dispatch, eval_call_provider() saves global
state--including pointers, such as `autocmd_fname`--into
`provider_caller_scope` which is later restored by f_rpcrequest().

But `autocmd_fname` is special-cased in eval_vars(), for performance
(see Vim patch 7.2.021; this is also the singular purpose of the
`autocmd_fname_full` global. Yay!)

If eval_vars() frees `autocmd_fname` then its provider-RPC-scoped alias
becomes a problem.

Solution: Don't free autocmd_fname in eval_vars(), just copy into it.

closes #5245
closes #5617

Reference
------------------------------------------------------------------------

Vim patch 7.2.021
f6dad43c98
Problem:    When executing autocommands getting the full file name may be
            slow. (David Kotchan)
Solution:   Postpone calling FullName_save() until autocmd_fname is used.

vim_dev discussion (2008): "Problem with CursorMoved AutoCommand when
Editing Files on a Remote WIndows Share"
https://groups.google.com/d/msg/vim_dev/kj95weZa_eE/GTgj4aq5sIgJ
2018-03-24 11:01:24 +01:00

103 lines
2.9 KiB
Lua

local helpers = require('test.functional.helpers')(after_each)
local eval, command, feed = helpers.eval, helpers.command, helpers.feed
local eq, clear, insert = helpers.eq, helpers.clear, helpers.insert
local expect, write_file = helpers.expect, helpers.write_file
local feed_command = helpers.feed_command
local source = helpers.source
local missing_provider = helpers.missing_provider
do
clear()
if missing_provider('python3') then
pending('Python 3 (or the neovim module) is broken/missing', function() end)
return
end
end
describe('python3 provider', function()
before_each(function()
clear()
command('python3 import vim')
end)
it('feature test', function()
eq(1, eval('has("python3")'))
end)
it('python3_execute', function()
command('python3 vim.vars["set_by_python3"] = [100, 0]')
eq({100, 0}, eval('g:set_by_python3'))
end)
it('does not truncate error message <1 MB', function()
-- XXX: Python limits the error name to 200 chars, so this test is
-- mostly bogus.
local very_long_symbol = string.rep('a', 1200)
feed_command(':silent! py3 print('..very_long_symbol..' b)')
-- Truncated error message would not contain this (last) line.
eq('SyntaxError: invalid syntax', eval('v:errmsg'))
end)
it('python3_execute with nested commands', function()
command([[python3 vim.command('python3 vim.command("python3 vim.command(\'let set_by_nested_python3 = 555\')")')]])
eq(555, eval('g:set_by_nested_python3'))
end)
it('python3_execute with range', function()
insert([[
line1
line2
line3
line4]])
feed('ggjvj:python3 vim.vars["range"] = vim.current.range[:]<CR>')
eq({'line2', 'line3'}, eval('g:range'))
end)
it('py3file', function()
local fname = 'py3file.py'
write_file(fname, 'vim.command("let set_by_py3file = 123")')
command('py3file py3file.py')
eq(123, eval('g:set_by_py3file'))
os.remove(fname)
end)
it('py3do', function()
-- :pydo3 42 returns None for all lines,
-- the buffer should not be changed
command('normal :py3do 42')
eq(0, eval('&mod'))
-- insert some text
insert('abc\ndef\nghi')
expect([[
abc
def
ghi]])
-- go to top and select and replace the first two lines
feed('ggvj:py3do return str(linenr)<CR>')
expect([[
1
2
ghi]])
end)
it('py3eval', function()
eq({1, 2, {['key'] = 'val'}}, eval([[py3eval('[1, 2, {"key": "val"}]')]]))
end)
it('RPC call to expand("<afile>") during BufDelete #5245 #5617', function()
source([=[
python3 << EOF
import vim
def foo():
vim.eval('expand("<afile>:p")')
vim.eval('bufnr(expand("<afile>:p"))')
EOF
autocmd BufDelete * python3 foo()
autocmd BufUnload * python3 foo()]=])
feed_command("exe 'split' tempname()")
feed_command("bwipeout!")
feed_command('help help')
eq(2, eval('1+1')) -- Still alive?
end)
end)