test_ip.py 文件源码

def testReadTimeout(self):
        """Test if read timeouts work and group_read operations

        group_read operations should never block
        """
        tunnel = KNXIPTunnel(gwip)
        tunnel.connect()

        # Read from some random address and hope nothing responds here
        tick = datetime.now()
        res = tunnel.group_read(37000, timeout=1)
        tock = datetime.now()
        diff = tock - tick    # the result is a datetime.timedelta object
        self.assertTrue(diff.total_seconds() >= 1 and diff.total_seconds() < 3)
        self.assertIsNone(res)

        # Read from some random address and hope nothing responds here
        tick = datetime.now()
        res = tunnel.group_read(37000, timeout=5)
        tock = datetime.now()
        diff = tock - tick    # the result is a datetime.timedelta object
        self.assertTrue(diff.total_seconds() >= 5 and diff.total_seconds() < 6)
        self.assertIsNone(res)

        tunnel.disconnect()