OVO common enum class for IPv6 modes.

Change-Id: I383c59b52adda47fe1f96fb6e99e4c24955690f3

neutron/objects/common_types.py

@@ -0,0 +1,29 @@
+# Copyright 2016 OpenStack Foundation
+#    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 oslo_versionedobjects import fields as obj_fields
+
+from neutron.common import constants
+
+
+class IPV6ModeEnum(obj_fields.Enum):
+    """IPV6 Mode custom Enum"""
+    def __init__(self, **kwargs):
+        super(IPV6ModeEnum, self).__init__(valid_values=constants.IPV6_MODES,
+                                           **kwargs)
+
+
+class IPV6ModeEnumField(obj_fields.BaseEnumField):
+    def __init__(self, **kwargs):
+        self.AUTO_TYPE = IPV6ModeEnum()
+        super(IPV6ModeEnumField, self).__init__(**kwargs)

neutron/tests/unit/objects/test_common_types.py

@@ -0,0 +1,60 @@
+# Copyright 2016 OpenStack Foundation
+#    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 neutron.common import constants
+from neutron.objects import common_types
+from neutron.tests import base as test_base
+
+
+class TestField(object):
+
+    def test_coerce_good_values(self):
+        for in_val, out_val in self.coerce_good_values:
+            self.assertEqual(out_val, self.field.coerce('obj', 'attr', in_val))
+
+    def test_coerce_bad_values(self):
+        for in_val in self.coerce_bad_values:
+            self.assertRaises((TypeError, ValueError),
+                              self.field.coerce, 'obj', 'attr', in_val)
+
+    def test_to_primitive(self):
+        for in_val, prim_val in self.to_primitive_values:
+            self.assertEqual(prim_val, self.field.to_primitive('obj', 'attr',
+                                                               in_val))
+
+    def test_from_primitive(self):
+        class ObjectLikeThing(object):
+            _context = 'context'
+
+        for prim_val, out_val in self.from_primitive_values:
+            self.assertEqual(out_val, self.field.from_primitive(
+                ObjectLikeThing, 'attr', prim_val))
+
+    def test_stringify(self):
+        for in_val, out_val in self.coerce_good_values:
+            self.assertEqual("'%s'" % in_val, self.field.stringify(in_val))
+
+    def test_stringify_invalid(self):
+        for in_val in self.coerce_bad_values:
+            self.assertRaises(ValueError, self.field.stringify, in_val)
+
+
+class IPV6ModeEnumFieldTest(test_base.BaseTestCase, TestField):
+    def setUp(self):
+        super(IPV6ModeEnumFieldTest, self).setUp()
+        self.field = common_types.IPV6ModeEnumField()
+        self.coerce_good_values = [(mode, mode)
+                                   for mode in constants.IPV6_MODES]
+        self.coerce_bad_values = ['6', 4, 'type', 'slaacc']
+        self.to_primitive_values = self.coerce_good_values
+        self.from_primitive_values = self.coerce_good_values