Add unit tests for tenant_usages_client

This patch adds unit tests for tenant_usages_client

Change-Id: I5dcc8b3d421bda0b89ee6e7ef8695682ab2a5730
diff --git a/tempest/tests/services/compute/test_tenant_usages_client.py b/tempest/tests/services/compute/test_tenant_usages_client.py
new file mode 100644
index 0000000..f6bcf5f
--- /dev/null
+++ b/tempest/tests/services/compute/test_tenant_usages_client.py
@@ -0,0 +1,95 @@
+# Copyright 2015 NEC Corporation.  All rights reserved.
+#
+#    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 httplib2
+
+from oslo_serialization import jsonutils as json
+from oslotest import mockpatch
+
+from tempest.services.compute.json import tenant_usages_client
+from tempest.tests import base
+from tempest.tests import fake_auth_provider
+
+
+class TestTenantUsagesClient(base.TestCase):
+
+    FAKE_SERVER_USAGES = [{
+        "ended_at": None,
+        "flavor": "m1.tiny",
+        "hours": 1.0,
+        "instance_id": "1f1deceb-17b5-4c04-84c7-e0d4499c8fe0",
+        "local_gb": 1,
+        "memory_mb": 512,
+        "name": "new-server-test",
+        "started_at": "2012-10-08T20:10:44.541277",
+        "state": "active",
+        "tenant_id": "openstack",
+        "uptime": 3600,
+        "vcpus": 1
+        }]
+
+    FAKE_TENANT_USAGES = [{
+        "server_usages": FAKE_SERVER_USAGES,
+        "start": "2012-10-08T21:10:44.587336",
+        "stop": "2012-10-08T22:10:44.587336",
+        "tenant_id": "openstack",
+        "total_hours": 1,
+        "total_local_gb_usage": 1,
+        "total_memory_mb_usage": 512,
+        "total_vcpus_usage": 1
+        }]
+
+    def setUp(self):
+        super(TestTenantUsagesClient, self).setUp()
+        fake_auth = fake_auth_provider.FakeAuthProvider()
+        self.client = tenant_usages_client.TenantUsagesClient(
+            fake_auth, 'compute', 'regionOne')
+
+    def _test_list_tenant_usages(self, bytes_body=False):
+        serialized_body = json.dumps({"tenant_usages":
+                                      self.FAKE_TENANT_USAGES})
+        if bytes_body:
+            serialized_body = serialized_body.encode('utf-8')
+
+        mocked_resp = (httplib2.Response({'status': 200}), serialized_body)
+        self.useFixture(mockpatch.Patch(
+            'tempest.common.service_client.ServiceClient.get',
+            return_value=mocked_resp))
+        resp = self.client.list_tenant_usages()
+        self.assertEqual({"tenant_usages": self.FAKE_TENANT_USAGES}, resp)
+
+    def test_list_tenant_usages_with_str_body(self):
+        self._test_list_tenant_usages()
+
+    def test_list_tenant_usages_with_bytes_body(self):
+        self._test_list_tenant_usages(bytes_body=True)
+
+    def _test_show_tenant_usage(self, bytes_body=False):
+        serialized_body = json.dumps({"tenant_usage":
+                                      self.FAKE_TENANT_USAGES[0]})
+        if bytes_body:
+            serialized_body = serialized_body.encode('utf-8')
+
+        mocked_resp = (httplib2.Response({'status': 200}), serialized_body)
+        self.useFixture(mockpatch.Patch(
+            'tempest.common.service_client.ServiceClient.get',
+            return_value=mocked_resp))
+        resp = self.client.show_tenant_usage('openstack')
+        self.assertEqual({"tenant_usage": self.FAKE_TENANT_USAGES[0]}, resp)
+
+    def test_show_tenant_usage_with_str_body(self):
+        self._test_show_tenant_usage()
+
+    def test_show_tenant_usage_with_bytes_body(self):
+        self._test_show_tenant_usage(bytes_body=True)