1 files changed, 93 insertions, 0 deletions
diff --git a/system_tests/system_tests_sync/test_grpc.py b/system_tests/system_tests_sync/test_grpc.py
new file mode 100644
index 0000000..7f548ec
--- /dev/null
+++ b/system_tests/system_tests_sync/test_grpc.py
@@ -0,0 +1,93 @@
+# Copyright 2016 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
+#
+#      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 google.auth
+import google.auth.credentials
+import google.auth.jwt
+import google.auth.transport.grpc
+from google.oauth2 import service_account
+
+from google.cloud import pubsub_v1
+
+
+def test_grpc_request_with_regular_credentials(http_request):
+    credentials, project_id = google.auth.default()
+    credentials = google.auth.credentials.with_scopes_if_required(
+        credentials, scopes=["https://www.googleapis.com/auth/pubsub"]
+    )
+
+
+    # Create a pub/sub client.
+    client = pubsub_v1.PublisherClient(credentials=credentials)
+
+    # list the topics and drain the iterator to test that an authorized API
+    # call works.
+    list_topics_iter = client.list_topics(project="projects/{}".format(project_id))
+    list(list_topics_iter)
+
+
+def test_grpc_request_with_regular_credentials_and_self_signed_jwt(http_request):
+    credentials, project_id = google.auth.default()
+
+    # At the time this test is being written, there are no GAPIC libraries
+    # that will trigger the self-signed JWT flow. Manually create the self-signed
+    # jwt on the service account credential to check that the request
+    # succeeds.
+    credentials = credentials.with_scopes(
+        scopes=[], default_scopes=["https://www.googleapis.com/auth/pubsub"]
+    )
+    credentials._create_self_signed_jwt(audience="https://pubsub.googleapis.com/")
+
+    # Create a pub/sub client.
+    client = pubsub_v1.PublisherClient(credentials=credentials)
+
+    # list the topics and drain the iterator to test that an authorized API
+    # call works.
+    list_topics_iter = client.list_topics(project="projects/{}".format(project_id))
+    list(list_topics_iter)
+    
+    # Check that self-signed JWT was created and is being used
+    assert credentials._jwt_credentials is not None
+    assert credentials._jwt_credentials.token == credentials.token
+
+
+def test_grpc_request_with_jwt_credentials():
+    credentials, project_id = google.auth.default()
+    audience = "https://pubsub.googleapis.com/google.pubsub.v1.Publisher"
+    credentials = google.auth.jwt.Credentials.from_signing_credentials(
+        credentials, audience=audience
+    )
+
+    # Create a pub/sub client.
+    client = pubsub_v1.PublisherClient(credentials=credentials)
+
+    # list the topics and drain the iterator to test that an authorized API
+    # call works.
+    list_topics_iter = client.list_topics(project="projects/{}".format(project_id))
+    list(list_topics_iter)
+
+
+def test_grpc_request_with_on_demand_jwt_credentials():
+    credentials, project_id = google.auth.default()
+    credentials = google.auth.jwt.OnDemandCredentials.from_signing_credentials(
+        credentials
+    )
+
+    # Create a pub/sub client.
+    client = pubsub_v1.PublisherClient(credentials=credentials)
+
+    # list the topics and drain the iterator to test that an authorized API
+    # call works.
+    list_topics_iter = client.list_topics(project="projects/{}".format(project_id))
+    list(list_topics_iter)