Changed base Resource class to prevent changing of passed arguments

+added unit tests.

Closes-Bug: #1276310
Change-Id: I572a56a0c0735a62670fd9aaa53fdbc881254a8e

savannaclient/api/base.py

@@ -26,6 +26,7 @@ class Resource(object):
 
     def __init__(self, manager, info):
         self.manager = manager
+        info = info.copy()
         self._info = info
         self._set_defaults(info)
         self._add_details(info)

savannaclient/tests/test_resource.py

@@ -0,0 +1,61 @@
+# Copyright (c) 2013 Mirantis Inc.
+#
+# 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 testtools
+
+from savannaclient.api import base
+
+
+class ResourceTest(testtools.TestCase):
+    def test_create_resource(self):
+        dict = {"name": "test"}
+        resource = TestResource(None, dict)
+        self.assertEqual("test", resource.name)
+        self.assertEqual("Test Description", resource.description)
+
+    def test_overwrite_default(self):
+        dict = {"name": "test",
+                "description": "Changed Description"}
+        resource = TestResource(None, dict)
+        self.assertEqual("test", resource.name)
+        self.assertEqual("Changed Description", resource.description)
+        self.assertEqual("extra", resource.extra)
+
+    def test_create_dont_modify_info_dict(self):
+        dict = {"name": "test",
+                "description": "Changed Description"}
+        dict_copy = dict.copy()
+        resource = TestResource(None, dict)
+        self.assertIsNotNone(resource)
+        self.assertEqual(dict_copy, dict)
+
+    def test_resource_str(self):
+        dict = {"name": "test",
+                "description": "Changed Description"}
+        resource = TestResource(None, dict)
+        rstr = str(resource)
+        self.assertIn(resource.resource_name, rstr)
+        self.assertIn("name", rstr)
+        self.assertIn("description", rstr)
+        self.assertIn("Changed Description", rstr)
+        self.assertNotIn("Test Description", rstr)
+        self.assertIn("extra", rstr)
+        self.assertNotIn("manager", rstr)
+
+
+class TestResource(base.Resource):
+    resource_name = 'Test Resource'
+    defaults = {'description': 'Test Description',
+                'extra': "extra"}