test_expect.py 文件源码

def test_signal_handling(self):
        '''
            This tests the error handling of a signal interrupt (usually a
            SIGWINCH generated when a window is resized), but in this test, we
            are substituting an ALARM signal as this is much easier for testing
            and is treated the same as a SIGWINCH.

            To ensure that the alarm fires during the expect call, we are
            setting the signal to alarm after 1 second while the spawned process
            sleeps for 2 seconds prior to sending the expected output.
        '''
        def noop(x, y):
            pass
        signal.signal(signal.SIGALRM, noop)

        p1 = pexpect.spawn('%s sleep_for.py 2' % self.PYTHONBIN, timeout=5)
        p1.expect('READY')
        signal.alarm(1)
        p1.expect('END')