#
# This file is part of pyasn1-modules software.
#
# Created by Russ Housley
# Copyright (c) 2019, Vigil Security, LLC
# License: http://snmplabs.com/pyasn1/license.html
#

import sys

from pyasn1.codec.der.decoder import decode as der_decode
from pyasn1.codec.der.encoder import encode as der_encode

from pyasn1_modules import pem
from pyasn1_modules import rfc5280
from pyasn1_modules import rfc7773

try:
    import unittest2 as unittest

except ImportError:
    import unittest


class AuthenticationContextExtnTestCase(unittest.TestCase):
    pem_text = """\
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tAGXsYdcuQpglUngmo/FV4Z9qjIDkYQ=
"""

    def setUp(self):
        self.asn1Spec = rfc5280.Certificate()

    def testDerCodec(self):
        substrate = pem.readBase64fromText(self.pem_text)
        asn1Object, rest = der_decode(substrate, asn1Spec=self.asn1Spec)
        assert not rest
        assert asn1Object.prettyPrint()
        assert der_encode(asn1Object) == substrate

        extn_list = [ ]
        for extn in asn1Object['tbsCertificate']['extensions']:
            extn_list.append(extn['extnID'])

            if extn['extnID'] == rfc7773.id_ce_authContext:
                s = extn['extnValue']
                acs, rest = der_decode(s,
                    asn1Spec=rfc5280.certificateExtensionsMap[extn['extnID']])
                assert not rest
                assert acs.prettyPrint()
                assert s == der_encode(acs)

                assert u'id.elegnamnden.se' in acs[0]['contextType']
                assert u'AuthContextInfo IdentityProvider' in acs[0]['contextInfo']

        assert rfc7773.id_ce_authContext in extn_list


suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])

if __name__ == '__main__':
    import sys

    result = unittest.TextTestRunner(verbosity=2).run(suite)
    sys.exit(not result.wasSuccessful())