1 files changed, 110 insertions, 0 deletions
diff --git a/tests/unit/packet/test_udp.py b/tests/unit/packet/test_udp.py
new file mode 100644
index 00000000..0d7d0aa9
--- /dev/null
+++ b/tests/unit/packet/test_udp.py
@@ -0,0 +1,110 @@
+# 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.
+
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+import unittest
+import logging
+import struct
+from struct import *
+from nose.tools import *
+from ryu.ofproto import ether, inet
+from ryu.lib.packet.packet import Packet
+from ryu.lib.packet.udp import udp
+from ryu.lib.packet.ipv4 import ipv4
+from ryu.lib.packet import packet_utils
+from ryu.lib import addrconv
+
+
+LOG = logging.getLogger('test_udp')
+
+
+class Test_udp(unittest.TestCase):
+    """ Test case for udp
+    """
+    src_port = 6431
+    dst_port = 8080
+    total_length = 65507
+    csum = 12345
+    u = udp(src_port, dst_port, total_length, csum)
+    buf = pack(udp._PACK_STR, src_port, dst_port, total_length, csum)
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_init(self):
+        eq_(self.src_port, self.u.src_port)
+        eq_(self.dst_port, self.u.dst_port)
+        eq_(self.total_length, self.u.total_length)
+        eq_(self.csum, self.u.csum)
+
+    def test_parser(self):
+        r1, r2, _ = self.u.parser(self.buf)
+
+        eq_(self.src_port, r1.src_port)
+        eq_(self.dst_port, r1.dst_port)
+        eq_(self.total_length, r1.total_length)
+        eq_(self.csum, r1.csum)
+        eq_(None, r2)
+
+    def test_serialize(self):
+        src_port = 6431
+        dst_port = 8080
+        total_length = 0
+        csum = 0
+
+        src_ip = '192.168.10.1'
+        dst_ip = '192.168.100.1'
+        prev = ipv4(4, 5, 0, 0, 0, 0, 0, 64,
+                    inet.IPPROTO_UDP, 0, src_ip, dst_ip)
+
+        u = udp(src_port, dst_port, total_length, csum)
+        buf = u.serialize(bytearray(), prev)
+        res = struct.unpack(udp._PACK_STR, buf)
+
+        eq_(res[0], src_port)
+        eq_(res[1], dst_port)
+        eq_(res[2], struct.calcsize(udp._PACK_STR))
+
+        # checksum
+        ph = struct.pack('!4s4sBBH',
+                         addrconv.ipv4.text_to_bin(src_ip),
+                         addrconv.ipv4.text_to_bin(dst_ip), 0, 17, res[2])
+        d = ph + buf + bytearray()
+        s = packet_utils.checksum(d)
+        eq_(0, s)
+
+    @raises(Exception)
+    def test_malformed_udp(self):
+        m_short_buf = self.buf[1:udp._MIN_LEN]
+        udp.parser(m_short_buf)
+
+    def test_default_args(self):
+        prev = ipv4(proto=inet.IPPROTO_UDP)
+        u = udp()
+        buf = u.serialize(bytearray(), prev)
+        res = struct.unpack(udp._PACK_STR, buf)
+
+        eq_(res[0], 1)
+        eq_(res[1], 1)
+        eq_(res[2], udp._MIN_LEN)
+
+    def test_json(self):
+        jsondict = self.u.to_jsondict()
+        u = udp.from_jsondict(jsondict['udp'])
+        eq_(str(self.u), str(u))