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#------------------------------------------------------------------------------
# elftools tests
#
# Seva Alekseyev (sevaa@sprynet.com)
# This code is in the public domain
#------------------------------------------------------------------------------
import unittest
import random
from io import BytesIO
from elftools.common.construct_utils import ULInt24, UBInt24
from elftools.common.utils import struct_parse
class TestInt24(unittest.TestCase):
def test_main(self):
# Testing parsing and building, both LE and BE
b = random.randbytes(3)
n = struct_parse(UBInt24(''), BytesIO(b))
self.assertEqual(n, (b[0] << 16) | (b[1] << 8) | b[2])
s = UBInt24('').build(n)
self.assertEqual(s, b)
n = struct_parse(ULInt24(''), BytesIO(b))
self.assertEqual(n, b[0] | (b[1] << 8) | (b[2] << 16))
s = ULInt24('').build(n)
self.assertEqual(s, b)
if __name__ == '__main__':
unittest.main()
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