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import unittest
from messaging.sms.udh import UserDataHeader
from messaging.utils import to_array
class TestUserDataHeader(unittest.TestCase):
def test_user_data_header(self):
data = to_array("08049f8e020105040b8423f0")
udh = UserDataHeader.from_bytes(data)
self.assertEqual(udh.concat.seq, 1)
self.assertEqual(udh.concat.cnt, 2)
self.assertEqual(udh.concat.ref, 40846)
self.assertEqual(udh.ports.dest_port, 2948)
self.assertEqual(udh.ports.orig_port, 9200)
data = to_array("0003190201")
udh = UserDataHeader.from_bytes(data)
self.assertEqual(udh.concat.seq, 1)
self.assertEqual(udh.concat.cnt, 2)
self.assertEqual(udh.concat.ref, 25)
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