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# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import logging
import struct
from struct import *
from os_ken.ofproto import ether, inet
from os_ken.lib.packet.ethernet import ethernet
from os_ken.lib.packet.arp import arp
from os_ken.lib import addrconv
LOG = logging.getLogger('test_ethernet')
class Test_ethernet(unittest.TestCase):
""" Test case for ethernet
"""
dst = 'aa:aa:aa:aa:aa:aa'
src = 'bb:bb:bb:bb:bb:bb'
ethertype = ether.ETH_TYPE_ARP
buf = pack(ethernet._PACK_STR,
addrconv.mac.text_to_bin(dst),
addrconv.mac.text_to_bin(src), ethertype)
e = ethernet(dst, src, ethertype)
def setUp(self):
pass
def tearDown(self):
pass
def find_protocol(self, pkt, name):
for p in pkt.protocols:
if p.protocol_name == name:
return p
def test_init(self):
self.assertEqual(self.dst, self.e.dst)
self.assertEqual(self.src, self.e.src)
self.assertEqual(self.ethertype, self.e.ethertype)
def test_parser(self):
res, ptype, _ = self.e.parser(self.buf)
LOG.debug((res, ptype))
self.assertEqual(res.dst, self.dst)
self.assertEqual(res.src, self.src)
self.assertEqual(res.ethertype, self.ethertype)
self.assertEqual(ptype, arp)
def test_serialize(self):
data = bytearray()
prev = None
buf = self.e.serialize(data, prev)
fmt = ethernet._PACK_STR
res = struct.unpack(fmt, buf)
self.assertEqual(res[0], addrconv.mac.text_to_bin(self.dst))
self.assertEqual(res[1], addrconv.mac.text_to_bin(self.src))
self.assertEqual(res[2], self.ethertype)
def test_malformed_ethernet(self):
m_short_buf = self.buf[1:ethernet._MIN_LEN]
self.assertRaises(Exception, ethernet.parser, m_short_buf)
def test_default_args(self):
e = ethernet()
buf = e.serialize(bytearray(), None)
res = struct.unpack(e._PACK_STR, bytes(buf))
self.assertEqual(res[0], addrconv.mac.text_to_bin('ff:ff:ff:ff:ff:ff'))
self.assertEqual(res[1], addrconv.mac.text_to_bin('00:00:00:00:00:00'))
self.assertEqual(res[2], ether.ETH_TYPE_IP)
def test_json(self):
jsondict = self.e.to_jsondict()
e = ethernet.from_jsondict(jsondict['ethernet'])
self.assertEqual(str(self.e), str(e))
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