neovim/test/functional/eval/system_spec.lua
2017-01-11 01:05:55 +01:00

421 lines
15 KiB
Lua

local helpers = require('test.functional.helpers')(after_each)
local eq, call, clear, eval, execute, feed, nvim =
helpers.eq, helpers.call, helpers.clear, helpers.eval, helpers.execute,
helpers.feed, helpers.nvim
local Screen = require('test.functional.ui.screen')
local function create_file_with_nuls(name)
return function()
feed('ipart1<C-V>000part2<C-V>000part3<ESC>:w '..name..'<CR>')
eval('1') -- wait for the file to be created
end
end
local function delete_file(name)
return function()
eval("delete('"..name.."')")
end
end
-- Some tests require the xclip program and a x server.
local xclip = nil
do
if os.getenv('DISPLAY') then
xclip = (os.execute('command -v xclip > /dev/null 2>&1') == 0)
end
end
describe('system()', function()
before_each(clear)
describe('command passed as a List', function()
local printargs_path = helpers.nvim_dir..'/printargs-test'
.. (helpers.os_name() == 'windows' and '.exe' or '')
it('quotes arguments correctly #5280', function()
local out = call('system',
{ printargs_path, [[1]], [[2 "3]], [[4 ' 5]], [[6 ' 7']] })
eq(0, eval('v:shell_error'))
eq([[arg1=1;arg2=2 "3;arg3=4 ' 5;arg4=6 ' 7';]], out)
out = call('system', { printargs_path, [['1]], [[2 "3]] })
eq(0, eval('v:shell_error'))
eq([[arg1='1;arg2=2 "3;]], out)
out = call('system', { printargs_path, "A\nB" })
eq(0, eval('v:shell_error'))
eq("arg1=A\nB;", out)
end)
it('calls executable in $PATH', function()
if 0 == eval("executable('python')") then pending("missing `python`") end
eq("foo\n", eval([[system(['python', '-c', 'print("foo")'])]]))
eq(0, eval('v:shell_error'))
end)
it('does NOT run in shell', function()
if helpers.os_name() ~= 'windows' then
eq("* $PATH %PATH%\n", eval("system(['echo', '*', '$PATH', '%PATH%'])"))
end
end)
end)
if helpers.pending_win32(pending) then return end
it('sets v:shell_error', function()
eval([[system("sh -c 'exit'")]])
eq(0, eval('v:shell_error'))
eval([[system("sh -c 'exit 1'")]])
eq(1, eval('v:shell_error'))
eval([[system("sh -c 'exit 5'")]])
eq(5, eval('v:shell_error'))
eval([[system('this-should-not-exist')]])
eq(127, eval('v:shell_error'))
end)
describe('executes shell function if passed a string', function()
local screen
before_each(function()
clear()
screen = Screen.new()
screen:attach()
end)
after_each(function()
screen:detach()
end)
it('`echo` and waits for its return', function()
feed(':call system("echo")<cr>')
screen:expect([[
^ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
:call system("echo") |
]])
end)
it('`yes` and is interrupted with CTRL-C', function()
feed(':call system("yes")<cr>')
screen:expect([[
|
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
:call system("yes") |
]])
feed('<c-c>')
screen:expect([[
^ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
Type :quit<Enter> to exit Nvim |
]])
end)
end)
describe('passing no input', function()
it('returns the program output', function()
eq("echoed", eval('system("echo -n echoed")'))
end)
it('to backgrounded command does not crash', function()
-- This is indeterminate, just exercise the codepath. May get E5677.
execute('call system("echo -n echoed &")')
local v_errnum = string.match(eval("v:errmsg"), "^E%d*:")
if v_errnum then
eq("E5677:", v_errnum)
end
eq(2, eval("1+1")) -- Still alive?
end)
end)
describe('passing input', function()
it('returns the program output', function()
eq("input", eval('system("cat -", "input")'))
end)
it('to backgrounded command does not crash', function()
-- This is indeterminate, just exercise the codepath. May get E5677.
execute('call system("cat - &")')
local v_errnum = string.match(eval("v:errmsg"), "^E%d*:")
if v_errnum then
eq("E5677:", v_errnum)
end
eq(2, eval("1+1")) -- Still alive?
end)
end)
describe('passing a lot of input', function()
it('returns the program output', function()
local input = {}
-- write more than 1mb of data, which should be enough to overcome
-- the os buffer limit and force multiple event loop iterations to write
-- everything
for _ = 1, 0xffff do
input[#input + 1] = '01234567890ABCDEFabcdef'
end
input = table.concat(input, '\n')
nvim('set_var', 'input', input)
eq(input, eval('system("cat -", g:input)'))
end)
end)
describe('input passed as Number', function()
it('stringifies the input', function()
eq('1', eval('system("cat", 1)'))
end)
end)
describe('with output containing NULs', function()
local fname = 'Xtest'
before_each(create_file_with_nuls(fname))
after_each(delete_file(fname))
it('replaces NULs by SOH characters', function()
eq('part1\001part2\001part3\n', eval('system("cat '..fname..'")'))
end)
end)
describe('input passed as List', function()
it('joins List items with linefeed characters', function()
eq('line1\nline2\nline3',
eval("system('cat -', ['line1', 'line2', 'line3'])"))
end)
-- Notice that NULs are converted to SOH when the data is read back. This
-- is inconsistent and is a good reason for the existence of the
-- `systemlist()` function, where input and output map to the same
-- characters(see the following tests with `systemlist()` below)
describe('with linefeed characters inside List items', function()
it('converts linefeed characters to NULs', function()
eq('l1\001p2\nline2\001a\001b\nl3',
eval([[system('cat -', ["l1\np2", "line2\na\nb", 'l3'])]]))
end)
end)
describe('with leading/trailing whitespace characters on items', function()
it('preserves whitespace, replacing linefeeds by NULs', function()
eq('line \nline2\001\n\001line3',
eval([[system('cat -', ['line ', "line2\n", "\nline3"])]]))
end)
end)
end)
describe("with a program that doesn't close stdout", function()
if not xclip then
pending('missing `xclip`', function() end)
else
it('will exit properly after passing input', function()
eq('', eval([[system('xclip -i -selection clipboard', 'clip-data')]]))
eq('clip-data', eval([[system('xclip -o -selection clipboard')]]))
end)
end
end)
end)
if helpers.pending_win32(pending) then return end
describe('systemlist()', function()
-- Similar to `system()`, but returns List instead of String.
before_each(clear)
it('sets the v:shell_error variable', function()
eval([[systemlist("sh -c 'exit'")]])
eq(0, eval('v:shell_error'))
eval([[systemlist("sh -c 'exit 1'")]])
eq(1, eval('v:shell_error'))
eval([[systemlist("sh -c 'exit 5'")]])
eq(5, eval('v:shell_error'))
eval([[systemlist('this-should-not-exist')]])
eq(127, eval('v:shell_error'))
end)
describe('exectues shell function', function()
local screen
before_each(function()
clear()
screen = Screen.new()
screen:attach()
end)
after_each(function()
screen:detach()
end)
it('`echo` and waits for its return', function()
feed(':call systemlist("echo")<cr>')
screen:expect([[
^ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
:call systemlist("echo") |
]])
end)
it('`yes` and is interrupted with CTRL-C', function()
feed(':call systemlist("yes | xargs")<cr>')
screen:expect([[
|
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
:call systemlist("yes | xargs") |
]])
feed('<c-c>')
screen:expect([[
^ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
~ |
Type :quit<Enter> to exit Nvim |
]])
end)
end)
describe('passing string with linefeed characters as input', function()
it('splits the output on linefeed characters', function()
eq({'abc', 'def', 'ghi'}, eval([[systemlist("cat -", "abc\ndef\nghi")]]))
end)
end)
describe('passing a lot of input', function()
it('returns the program output', function()
local input = {}
for _ = 1, 0xffff do
input[#input + 1] = '01234567890ABCDEFabcdef'
end
nvim('set_var', 'input', input)
eq(input, eval('systemlist("cat -", g:input)'))
end)
end)
describe('with output containing NULs', function()
local fname = 'Xtest'
before_each(create_file_with_nuls(fname))
after_each(delete_file(fname))
it('replaces NULs by newline characters', function()
eq({'part1\npart2\npart3'}, eval('systemlist("cat '..fname..'")'))
end)
end)
describe('input passed as List', function()
it('joins list items with linefeed characters', function()
eq({'line1', 'line2', 'line3'},
eval("systemlist('cat -', ['line1', 'line2', 'line3'])"))
end)
-- Unlike `system()` which uses SOH to represent NULs, with `systemlist()`
-- input and ouput are the same.
describe('with linefeed characters inside list items', function()
it('converts linefeed characters to NULs', function()
eq({'l1\np2', 'line2\na\nb', 'l3'},
eval([[systemlist('cat -', ["l1\np2", "line2\na\nb", 'l3'])]]))
end)
end)
describe('with leading/trailing whitespace characters on items', function()
it('preserves whitespace, replacing linefeeds by NULs', function()
eq({'line ', 'line2\n', '\nline3'},
eval([[systemlist('cat -', ['line ', "line2\n", "\nline3"])]]))
end)
end)
end)
describe('handles empty lines', function()
it('in the middle', function()
eq({'line one','','line two'}, eval("systemlist('cat',['line one','','line two'])"))
end)
it('in the beginning', function()
eq({'','line one','line two'}, eval("systemlist('cat',['','line one','line two'])"))
end)
end)
describe('when keepempty option is', function()
it('0, ignores trailing newline', function()
eq({'aa','bb'}, eval("systemlist('cat',['aa','bb'],0)"))
eq({'aa','bb'}, eval("systemlist('cat',['aa','bb',''],0)"))
end)
it('1, preserves trailing newline', function()
eq({'aa','bb'}, eval("systemlist('cat',['aa','bb'],1)"))
eq({'aa','bb',''}, eval("systemlist('cat',['aa','bb',''],2)"))
end)
end)
describe("with a program that doesn't close stdout", function()
if not xclip then
pending('missing `xclip`', function() end)
else
it('will exit properly after passing input', function()
eq({}, eval(
"systemlist('xclip -i -selection clipboard', ['clip', 'data'])"))
eq({'clip', 'data'}, eval(
"systemlist('xclip -o -selection clipboard')"))
end)
end
end)
end)