test_poll.py 文件源码

def test_poll_c_limits(self):
        from _testcapi import USHRT_MAX, INT_MAX, UINT_MAX
        pollster = select.poll()
        pollster.register(1)

        # Issues #15989, #17919
        self.assertRaises(OverflowError, pollster.register, 0, USHRT_MAX + 1)
        self.assertRaises(OverflowError, pollster.modify, 1, USHRT_MAX + 1)
        self.assertRaises(OverflowError, pollster.poll, INT_MAX + 1)
        self.assertRaises(OverflowError, pollster.poll, UINT_MAX + 1)