1 files changed, 115 insertions, 0 deletions
diff --git a/tests/unit/packet/test_gre.py b/tests/unit/packet/test_gre.py
new file mode 100644
index 00000000..c955ec70
--- /dev/null
+++ b/tests/unit/packet/test_gre.py
@@ -0,0 +1,115 @@
+# Copyright (C) 2016 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.
+
+from __future__ import print_function
+
+import logging
+import os
+import sys
+
+import unittest
+from nose.tools import eq_
+from nose.tools import ok_
+
+from ryu.lib import pcaplib
+from ryu.lib.packet import gre
+from ryu.lib.packet import packet
+from ryu.utils import binary_str
+from ryu.lib.packet.ether_types import ETH_TYPE_IP, ETH_TYPE_TEB
+
+LOG = logging.getLogger(__name__)
+
+GENEVE_DATA_DIR = os.path.join(
+    os.path.dirname(sys.modules[__name__].__file__),
+    '../../packet_data/pcap/')
+
+
+class Test_gre(unittest.TestCase):
+    """
+    Test case gre for ryu.lib.packet.gre.
+    """
+
+    version = 0
+    gre_proto = ETH_TYPE_IP
+    nvgre_proto = ETH_TYPE_TEB
+    checksum = 0x440d
+    seq_number = 10
+    key = 256100
+    vsid = 1000
+    flow_id = 100
+
+    gre = gre.gre(version=version, protocol=gre_proto, checksum=checksum,
+                  key=key, seq_number=seq_number)
+
+    def test_key_setter(self):
+        self.gre.key = self.key
+        eq_(self.gre._key, self.key)
+        eq_(self.gre._vsid, self.vsid)
+        eq_(self.gre._flow_id, self.flow_id)
+
+    def test_key_setter_none(self):
+        self.gre.key = None
+        eq_(self.gre._key, None)
+        eq_(self.gre._vsid, None)
+        eq_(self.gre._flow_id, None)
+
+        self.gre.key = self.key
+
+    def test_vsid_setter(self):
+        self.gre.vsid = self.vsid
+        eq_(self.gre._key, self.key)
+        eq_(self.gre._vsid, self.vsid)
+        eq_(self.gre._flow_id, self.flow_id)
+
+    def test_flowid_setter(self):
+        self.gre.flow_id = self.flow_id
+        eq_(self.gre._key, self.key)
+        eq_(self.gre._vsid, self.vsid)
+        eq_(self.gre._flow_id, self.flow_id)
+
+    def test_nvgre_init(self):
+        nvgre = gre.nvgre(version=self.version, vsid=self.vsid,
+                          flow_id=self.flow_id)
+
+        eq_(nvgre.version, self.version)
+        eq_(nvgre.protocol, self.nvgre_proto)
+        eq_(nvgre.checksum, None)
+        eq_(nvgre.seq_number, None)
+        eq_(nvgre._key, self.key)
+        eq_(nvgre._vsid, self.vsid)
+        eq_(nvgre._flow_id, self.flow_id)
+
+    def test_parser(self):
+        files = [
+            'gre_full_options',
+            'gre_no_option',
+            'gre_nvgre_option',
+        ]
+
+        for f in files:
+            # print('*** testing %s ...' % f)
+            for _, buf in pcaplib.Reader(
+                    open(GENEVE_DATA_DIR + f + '.pcap', 'rb')):
+                # Checks if message can be parsed as expected.
+                pkt = packet.Packet(buf)
+                gre_pkt = pkt.get_protocol(gre.gre)
+                ok_(isinstance(gre_pkt, gre.gre),
+                    'Failed to parse Gre message: %s' % pkt)
+
+                # Checks if message can be serialized as expected.
+                pkt.serialize()
+
+                eq_(buf, pkt.data,
+                    "b'%s' != b'%s'" % (binary_str(buf), binary_str(pkt.data)))