utils/test_bgp: Add unit tests for Flow Specification

Signed-off-by: Shinpei Muraoka <shinpei.muraoka@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

ryu/tests/unit/services/protocols/bgp/utils/test_bgp.py

@@ -0,0 +1,85 @@
+# Copyright (C) 2017 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 logging
+import unittest
+
+from nose.tools import eq_, raises
+
+from ryu.lib.packet.bgp import (
+    BGPFlowSpecTrafficRateCommunity,
+    BGPFlowSpecTrafficActionCommunity,
+    BGPFlowSpecRedirectCommunity,
+    BGPFlowSpecTrafficMarkingCommunity,
+)
+
+from ryu.services.protocols.bgp.core import BgpCoreError
+from ryu.services.protocols.bgp.utils.bgp import create_v4flowspec_actions
+
+
+LOG = logging.getLogger(__name__)
+
+
+class Test_Utils_BGP(unittest.TestCase):
+    """
+    Test case for ryu.services.protocols.bgp.utils.bgp
+    """
+
+    def _test_create_v4flowspec_actions(self, actions, expected_communities):
+        communities = create_v4flowspec_actions(actions)
+        expected_communities.sort(key=lambda x: x.subtype)
+        communities.sort(key=lambda x: x.subtype)
+        eq_(str(expected_communities), str(communities))
+
+    def test_create_v4flowspec_actions_all_actions(self):
+        actions = {
+            'traffic_rate': {
+                'as_number': 0,
+                'rate_info': 100.0,
+            },
+            'traffic_action': {
+                'action': 3,
+            },
+            'redirect': {
+                'as_number': 10,
+                'local_administrator': 10,
+            },
+            'traffic_marking': {
+                'dscp': 24,
+            }
+        }
+        expected_communities = [
+            BGPFlowSpecTrafficRateCommunity(as_number=0, rate_info=100.0),
+            BGPFlowSpecTrafficActionCommunity(action=3),
+            BGPFlowSpecRedirectCommunity(as_number=10, local_administrator=10),
+            BGPFlowSpecTrafficMarkingCommunity(dscp=24),
+        ]
+        self._test_create_v4flowspec_actions(actions, expected_communities)
+
+    def test_create_v4flowspec_actions_without_actions(self):
+        actions = None
+        expected_communities = []
+        self._test_create_v4flowspec_actions(actions, expected_communities)
+
+    @raises(ValueError)
+    def test_create_v4flowspec_actions_not_exist_actions(self):
+        actions = {
+            'traffic_test': {
+                'test': 10,
+            },
+        }
+        expected_communities = []
+        self._test_create_v4flowspec_actions(actions, expected_communities)