Add support for limits

Allow to get the limits of your project/tenant.

Change-Id: I115b2fad354a4319aece33a13b4dfdc204e4c5fb

shade/tests/functional/test_limits.py

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+
+# 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.
+
+"""
+test_limits
+----------------------------------
+
+Functional tests for `shade` limits method
+"""
+from shade.tests.functional import base
+
+
+class TestUsage(base.BaseFunctionalTestCase):
+
+    def test_get_limits(self):
+        '''Test quotas functionality'''
+        limits = self.operator_cloud.get_limits('demo')
+        self.assertIsNotNone(limits)
+        self.assertTrue(hasattr(limits, 'rate'))
+
+        # Test normalize limits
+        self.assertFalse(hasattr(limits, 'HUMAN_ID'))