os/signal: tests: use raise instead of kill(self)

Because on Windows os.kill unconditionally terminates target process,
even if own self, instead of sending it any kind of signal.

golang/os/signal_test.py

@@ -30,6 +30,11 @@ from golang.golang_test import panics, _pyrun
 from pytest import raises
 from subprocess import PIPE
 
+try:
+    from signal import raise_signal
+except ImportError: # py2
+    from _testcapi import raise_signal
+
 
 # directories
 dir_os       = dirname(__file__)    # .../pygolang/os
@@ -363,8 +368,9 @@ def test_stdlib_interop_KeyboardInterrupt():
 
 # killme sends signal sig to own process.
 def killme(sig):
-    mypid = os.getpid()
-    os.kill(mypid, sig.signo)
+    # use raise(sig) instead of kill(mypid, sig) so that it works on windows,
+    # where os.kill unconditionally terminates target process.
+    raise_signal(sig.signo)
 
 # wait for waits until cond() becomes true or timeout.
 def waitfor(cond):

golang/os/testprog/signal_test_all.py

 #!/usr/bin/env python
-# Copyright (C) 2021-2022  Nexedi SA and Contributors.
+# Copyright (C) 2021-2023  Nexedi SA and Contributors.
 #                          Kirill Smelkov <kirr@nexedi.com>
 #
 # This program is free software: you can Use, Study, Modify and Redistribute
@@ -24,7 +24,8 @@ from __future__ import print_function, absolute_import
 from golang import chan
 from golang import os as gos, syscall, time
 from golang.os import signal
-import os, sys
+from golang.os.signal_test import killme
+import sys
 
 def main():
     # build "all signals" list
@@ -72,11 +73,6 @@ def main():
     killme(syscall.SIGTERM)
     raise AssertionError("not terminated")
 
-# killme sends signal sig to own process.
-def killme(sig):
-    mypid = os.getpid()
-    os.kill(mypid, sig.signo)
-
 def emit(msg=''):
     print(msg)
     sys.stdout.flush()