Source code for dhcpkit.tests.ipv6.options.test_preference_option

"""
Test the PreferenceOption implementation
"""
import unittest

from dhcpkit.ipv6.options import PreferenceOption
from dhcpkit.tests.ipv6.options import test_option


[docs]class PreferenceOptionTestCase(test_option.OptionTestCase):
[docs]    def setUp(self):
        self.option_bytes = bytes.fromhex('00070001ff')
        self.option_object = PreferenceOption(preference=255)
        self.parse_option()

[docs]    def test_validate_preference(self):
        self.check_unsigned_integer_property('preference', size=8)

[docs]    def test_bad_option_length(self):
        with self.assertRaisesRegex(ValueError, 'must have length 1'):
            PreferenceOption.parse(bytes.fromhex('00070000ffff'))

        with self.assertRaisesRegex(ValueError, 'must have length 1'):
            PreferenceOption.parse(bytes.fromhex('00070002ffff'))


if __name__ == '__main__':  # pragma: no cover
    unittest.main()