test_signals_windows.py 文件源码

def test_send(self):
        ''' Test sending signals.
        '''
        python_path = sys.executable
        python_path = os.path.abspath(python_path)
        worker_cmd = ('"' + python_path + '" -c ' +
                      '"import time; time.sleep(60)"')

        with tempfile.TemporaryDirectory() as dirpath:
            pidfile = dirpath + '/pid.pid'

            for sig in [2, signal.SIGTERM, SIGABRT]:
                with self.subTest(sig):
                    worker = subprocess.Popen(
                        worker_cmd
                    )
                    worker_pid = worker.pid

                    with open(pidfile, 'w') as f:
                        f.write(str(worker_pid) + '\n')

                    send(pidfile, sig)
                    worker.wait()
                    self.assertEqual(worker.returncode, int(sig))

                    # Get a false PID so we can test against it as well
                    # Note the mild race condition here
                    bad_pid = os.getpid()
                    while psutil.pid_exists(bad_pid):
                        bad_pid = random.randint(1000, 99999)

                    with open(pidfile, 'w') as f:
                        f.write(str(bad_pid) + '\n')

                    with self.assertRaises(OSError):
                        send(pidfile, sig)