Add unit tests for services_client

We have a plan to migrate service clients to tempest-lib from Tempest.
However, we are not doing enough tests for service clients now.
This patch adds unit test for services_client.

Change-Id: I4cebca7b7c032ea22c544a725af13edf77666628
diff --git a/tempest/tests/services/compute/test_services_client.py b/tempest/tests/services/compute/test_services_client.py
new file mode 100644
index 0000000..61ca830
--- /dev/null
+++ b/tempest/tests/services/compute/test_services_client.py
@@ -0,0 +1,106 @@
+# 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 copy
+import httplib2
+
+from oslo_serialization import jsonutils as json
+from oslotest import mockpatch
+
+from tempest.services.compute.json import services_client
+from tempest.tests import base
+from tempest.tests import fake_auth_provider
+
+
+class TestServicesClient(base.TestCase):
+
+    FAKE_SERVICES = [{
+        "status": "enabled",
+        "binary": "nova-conductor",
+        "zone": "internal",
+        "state": "up",
+        "updated_at": "2015-08-19T06:50:55.000000",
+        "host": "controller",
+        "disabled_reason": None,
+        "id": 1
+        }]
+
+    FAKE_SERVICE = {
+        "status": "enabled",
+        "binary": "nova-conductor",
+        "host": "controller"
+        }
+
+    def setUp(self):
+        super(TestServicesClient, self).setUp()
+        fake_auth = fake_auth_provider.FakeAuthProvider()
+        self.client = services_client.ServicesClient(
+            fake_auth, 'compute', 'regionOne')
+
+    def _test_list_services(self, bytes_body=False):
+        serialized_body = json.dumps({"services": self.FAKE_SERVICES})
+        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_services()
+        self.assertEqual(self.FAKE_SERVICES, resp)
+
+    def test_list_services_with_str_body(self):
+        self._test_list_services()
+
+    def test_list_services_with_bytes_body(self):
+        self._test_list_services(bytes_body=True)
+
+    def _test_enable_service(self, bytes_body=False):
+        serialized_body = json.dumps({"service": self.FAKE_SERVICE})
+        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.put',
+            return_value=mocked_resp))
+        resp = self.client.enable_service("nova-conductor", "controller")
+        self.assertEqual(self.FAKE_SERVICE, resp)
+
+    def test_enable_service_with_str_body(self):
+        self._test_enable_service()
+
+    def test_enable_service_with_bytes_body(self):
+        self._test_enable_service(bytes_body=True)
+
+    def _test_disable_service(self, bytes_body=False):
+        fake_service = copy.deepcopy(self.FAKE_SERVICE)
+        fake_service["status"] = "disable"
+
+        serialized_body = json.dumps({"service": self.FAKE_SERVICE})
+        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.put',
+            return_value=mocked_resp))
+        resp = self.client.disable_service("nova-conductor", "controller")
+        self.assertEqual(self.FAKE_SERVICE, resp)
+
+    def test_disable_service_with_str_body(self):
+        self._test_enable_service()
+
+    def test_disable_service_with_bytes_body(self):
+        self._test_enable_service(bytes_body=True)