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" Test signal handling.
source check.vim
CheckUnix
source shared.vim
" Check whether a signal is available on this system.
func HasSignal(signal)
let signals = system('kill -l')
return signals =~# '\<' .. a:signal .. '\>'
endfunc
" Test signal WINCH (window resize signal)
func Test_signal_WINCH()
CheckNotGui
if !HasSignal('WINCH')
throw 'Skipped: WINCH signal not supported'
endif
" We do not actually want to change the size of the terminal.
let old_WS = ''
if exists('&t_WS')
let old_WS = &t_WS
let &t_WS = ''
endif
let old_lines = &lines
let old_columns = &columns
let new_lines = &lines - 2
let new_columns = &columns - 2
exe 'set lines=' .. new_lines
exe 'set columns=' .. new_columns
call assert_equal(new_lines, &lines)
call assert_equal(new_columns, &columns)
" Send signal and wait for signal to be processed.
" 'lines' and 'columns' should have been restored
" after handing signal WINCH.
exe 'silent !kill -s WINCH ' .. getpid()
call WaitForAssert({-> assert_equal(old_lines, &lines)})
call assert_equal(old_columns, &columns)
if old_WS != ''
let &t_WS = old_WS
endif
endfunc
" Test signal PWR, which should update the swap file.
func Test_signal_PWR()
if !HasSignal('PWR')
return
endif
" Set a very large 'updatetime' and 'updatecount', so that we can be sure
" that swap file is updated as a result of sending PWR signal, and not
" because of exceeding 'updatetime' or 'updatecount' when changing buffer.
set updatetime=100000 updatecount=100000
new Xtest_signal_PWR
let swap_name = swapname('%')
call setline(1, '123')
preserve
let swap_content = readfile(swap_name, 'b')
" Update the buffer and check that the swap file is not yet updated,
" since we set 'updatetime' and 'updatecount' to large values.
call setline(1, 'abc')
call assert_equal(swap_content, readfile(swap_name, 'b'))
" Sending PWR signal should update the swap file.
exe 'silent !kill -s PWR ' .. getpid()
call WaitForAssert({-> assert_notequal(swap_content, readfile(swap_name, 'b'))})
bwipe!
set updatetime& updatecount&
endfunc
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