Func test for os-traits and os-resource-classes lib sync

Placement synchronizes the content of the os-traits and
os-resource-classes lib to its internal DB at service startup. We had
gabbi tests to test that by asserting a hard coded number of traits and
RCs. These test were always blocking the global version bump of such os-
libs as the placement test needed to be updated. This created a deadlock
between the version bump in the requirements repo and the test update in
the placement repo. To avoid the need to always do three steps for a lib
version bump (turn of test, bump global req, update an re-enable the test)
the test logic is changed. Now these tests compares the content of the
lib with the DB automatically instead of hard coding a number of
expected traits and RCs. To be able to this these tests are move from
gabbi to python.

Change-Id: I31431a6eb4f144135da0dc9c6d5e4c6b75d1af5d

placement/tests/functional/gabbits/resource-classes.yaml

@@ -47,11 +47,6 @@ tests:
   data: data
   status: 415
 
-- name: what is at resource classes
-  GET: /resource_classes
-  response_json_paths:
-      $.resource_classes.`len`: 21  #  Number of standard resource classes
-
 - name: non admin forbidden
   GET: /resource_classes
   request_headers:

placement/tests/functional/gabbits/traits.yaml

@@ -9,11 +9,6 @@ defaults:
         openstack-api-version: placement 1.6
 
 tests:
-- name: what is at traits
-  GET: /traits
-  response_json_paths:
-      $.traits.`len`: 344  #  Number of standard traits
-
 - name: create a trait without custom namespace
   PUT: /traits/TRAIT_X
   status: 400

placement/tests/functional/test_lib_sync.py

@@ -0,0 +1,47 @@
+#    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 os_resource_classes
+import os_traits
+
+from placement import direct
+from placement.tests.functional import base
+
+
+class TestLibSync(base.TestCase):
+    """Test that traits and resource classes are synced from os-traits and
+    os-resource-classes libs to the DB at service startup.
+    """
+
+    def setUp(self):
+        super().setUp()
+        self.headers = {
+            'x-auth-token': 'admin',
+            'content-type': 'application/json',
+            'OpenStack-API-Version': 'placement latest',
+        }
+
+    def test_traits_sync(self):
+        with direct.PlacementDirect(self.conf_fixture.conf) as client:
+            resp = client.get('/traits', headers=self.headers)
+            self.assertItemsEqual(
+                os_traits.get_traits(),
+                resp.json()['traits'],
+            )
+
+    def test_resource_classes_sync(self):
+        with direct.PlacementDirect(self.conf_fixture.conf) as client:
+            resp = client.get('/resource_classes', headers=self.headers)
+            self.assertItemsEqual(
+                os_resource_classes.STANDARDS,
+                [rc['name'] for rc in resp.json()['resource_classes']],
+                resp.json(),
+            )