test_unix_events.py 文件源码

def test_add_signal_handler_install_error(self, m_signal):
        m_signal.NSIG = signal.NSIG

        def set_wakeup_fd(fd):
            if fd == -1:
                raise ValueError()
        m_signal.set_wakeup_fd = set_wakeup_fd

        class Err(OSError):
            errno = errno.EFAULT
        m_signal.signal.side_effect = Err

        self.assertRaises(
            Err,
            self.loop.add_signal_handler,
            signal.SIGINT, lambda: True)