test_devpoll.py 文件源码

def test_timeout_overflow(self):
        pollster = select.devpoll()
        w, r = os.pipe()
        pollster.register(w)

        pollster.poll(-1)
        self.assertRaises(OverflowError, pollster.poll, -2)
        self.assertRaises(OverflowError, pollster.poll, -1 << 31)
        self.assertRaises(OverflowError, pollster.poll, -1 << 64)

        pollster.poll(0)
        pollster.poll(1)
        pollster.poll(1 << 30)
        self.assertRaises(OverflowError, pollster.poll, 1 << 31)
        self.assertRaises(OverflowError, pollster.poll, 1 << 63)
        self.assertRaises(OverflowError, pollster.poll, 1 << 64)