diff --git a/kms/tests/system.py b/kms/tests/system.py
new file mode 100644
index 000000000000..4a23908dc337
--- /dev/null
+++ b/kms/tests/system.py
@@ -0,0 +1,29 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2019 Google LLC
+#
+# 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
+#
+#     https://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
+
+from google.cloud import kms_v1
+
+
+class TestKeyManagementServiceClient(object):
+    def test_list_global_key_rings(self):
+        project_id = os.environ["PROJECT_ID"]
+
+        client = kms_v1.KeyManagementServiceClient()
+        location = "global"
+        parent = client.location_path(project_id, location)
+        client.list_key_rings(parent)