1 files changed, 140 insertions, 0 deletions
diff --git a/src/nvim/testdir/test_signals.vim b/src/nvim/testdir/test_signals.vim
new file mode 100644
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+++ b/src/nvim/testdir/test_signals.vim
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+" Test signal handling.
+
+source check.vim
+source term_util.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()
+  throw 'skipped: Nvim cannot avoid terminal resize'
+  if has('gui_running') || !HasSignal('WINCH')
+    return
+  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
+
+" Test a deadly signal.
+"
+" There are several deadly signals: SISEGV, SIBUS, SIGTERM...
+" Test uses signal SIGTERM as it does not create a core
+" dump file unlike SIGSEGV, SIGBUS, etc. See "man 7 signals.
+"
+" Vim should exit with a deadly signal and unsaved changes
+" should be recoverable from the swap file preserved as a
+" result of the deadly signal handler.
+func Test_deadly_signal_TERM()
+  if !HasSignal('TERM')
+    throw 'Skipped: TERM signal not supported'
+  endif
+  if !CanRunVimInTerminal()
+    throw 'Skipped: cannot run vim in terminal'
+  endif
+  let cmd = GetVimCommand()
+  if cmd =~ 'valgrind'
+    throw 'Skipped: cannot test signal TERM with valgrind'
+  endif
+
+  " If test fails once, it can leave temporary files and trying to rerun
+  " the test would then fail again if they are not deleted first.
+  call delete('.Xsig_TERM.swp')
+  call delete('XsetupAucmd')
+  call delete('XautoOut')
+  let lines =<< trim END
+    au VimLeave * call writefile(["VimLeave triggered"], "XautoOut", "as")
+    au VimLeavePre * call writefile(["VimLeavePre triggered"], "XautoOut", "as")
+  END
+  call writefile(lines, 'XsetupAucmd')
+
+  let buf = RunVimInTerminal('-S XsetupAucmd Xsig_TERM', {'rows': 6})
+  let pid_vim = term_getjob(buf)->job_info().process
+
+  call term_sendkeys(buf, ":call setline(1, 'foo')\n")
+  call WaitForAssert({-> assert_equal('foo', term_getline(buf, 1))})
+
+  call assert_false(filereadable('Xsig_TERM'))
+  exe 'silent !kill -s TERM '  .. pid_vim
+  call WaitForAssert({-> assert_true(filereadable('.Xsig_TERM.swp'))})
+
+  " Don't call StopVimInTerminal() as it expects job to be still running.
+  call WaitForAssert({-> assert_equal("finished", term_getstatus(buf))})
+
+  new
+  silent recover .Xsig_TERM.swp
+  call assert_equal(['foo'], getline(1, '$'))
+
+  let result = readfile('XautoOut')
+  call assert_match('VimLeavePre triggered', result[0])
+  call assert_match('VimLeave triggered', result[1])
+
+  %bwipe!
+  call delete('.Xsig_TERM.swp')
+  call delete('XsetupAucmd')
+  call delete('XautoOut')
+endfunc
+
+" vim: ts=8 sw=2 sts=2 tw=80 fdm=marker