Add Metering Labels client unit tests

Change-Id: I1cc7a5348655457aac92ff896369cc5dd1c825c6
Partially Implements: blueprint tempest-lib-missing-test-coverage
diff --git a/tempest/tests/lib/services/network/test_metering_labels_client.py b/tempest/tests/lib/services/network/test_metering_labels_client.py
new file mode 100644
index 0000000..a048326
--- /dev/null
+++ b/tempest/tests/lib/services/network/test_metering_labels_client.py
@@ -0,0 +1,107 @@
+# Copyright 2017 AT&T 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.
+
+from tempest.lib.services.network import metering_labels_client
+from tempest.tests.lib import fake_auth_provider
+from tempest.tests.lib.services import base
+
+
+class TestMeteringLabelsClient(base.BaseServiceTest):
+
+    FAKE_METERING_LABELS = {
+        "metering_labels": [
+            {
+                "project_id": "45345b0ee1ea477fac0f541b2cb79cd4",
+                "tenant_id": "45345b0ee1ea477fac0f541b2cb79cd4",
+                "description": "label1 description",
+                "name": "label1",
+                "id": "a6700594-5b7a-4105-8bfe-723b346ce866",
+                "shared": False
+            },
+            {
+                "project_id": "45345b0ee1ea477fac0f541b2cb79cd4",
+                "tenant_id": "45345b0ee1ea477fac0f541b2cb79cd4",
+                "description": "label2 description",
+                "name": "label2",
+                "id": "e131d186-b02d-4c0b-83d5-0c0725c4f812",
+                "shared": False
+            }
+        ]
+    }
+
+    FAKE_METERING_LABEL_ID = "a6700594-5b7a-4105-8bfe-723b346ce866"
+
+    def setUp(self):
+        super(TestMeteringLabelsClient, self).setUp()
+        fake_auth = fake_auth_provider.FakeAuthProvider()
+        self.metering_labels_client = \
+            metering_labels_client.MeteringLabelsClient(
+                fake_auth, "network", "regionOne")
+
+    def _test_list_metering_labels(self, bytes_body=False):
+        self.check_service_client_function(
+            self.metering_labels_client.list_metering_labels,
+            "tempest.lib.common.rest_client.RestClient.get",
+            self.FAKE_METERING_LABELS,
+            bytes_body,
+            200)
+
+    def _test_create_metering_label(self, bytes_body=False):
+        self.check_service_client_function(
+            self.metering_labels_client.create_metering_label,
+            "tempest.lib.common.rest_client.RestClient.post",
+            {"metering_label": self.FAKE_METERING_LABELS[
+                "metering_labels"][1]},
+            bytes_body,
+            201,
+            name="label1",
+            description="label1 description",
+            shared=False)
+
+    def _test_show_metering_label(self, bytes_body=False):
+        self.check_service_client_function(
+            self.metering_labels_client.show_metering_label,
+            "tempest.lib.common.rest_client.RestClient.get",
+            {"metering_label": self.FAKE_METERING_LABELS[
+                "metering_labels"][0]},
+            bytes_body,
+            200,
+            metering_label_id=self.FAKE_METERING_LABEL_ID)
+
+    def test_delete_metering_label(self):
+        self.check_service_client_function(
+            self.metering_labels_client.delete_metering_label,
+            "tempest.lib.common.rest_client.RestClient.delete",
+            {},
+            status=204,
+            metering_label_id=self.FAKE_METERING_LABEL_ID)
+
+    def test_list_metering_labels_with_str_body(self):
+        self._test_list_metering_labels()
+
+    def test_list_metering_labels_with_bytes_body(self):
+        self._test_list_metering_labels(bytes_body=True)
+
+    def test_create_metering_label_with_str_body(self):
+        self._test_create_metering_label()
+
+    def test_create_metering_label_with_bytes_body(self):
+        self._test_create_metering_label(bytes_body=True)
+
+    def test_show_metering_label_with_str_body(self):
+        self._test_show_metering_label()
+
+    def test_show_metering_label_with_bytes_body(self):
+        self._test_show_metering_label(bytes_body=True)