Make secure_authorized_channel pass kwargs to grpc.secure_channel (#90)

google/auth/transport/grpc.py

@@ -62,7 +62,7 @@ def __call__(self, context, callback):
 
 
 def secure_authorized_channel(
-        credentials, request, target, ssl_credentials=None):
+        credentials, request, target, ssl_credentials=None, **kwargs):
     """Creates a secure authorized gRPC channel.
 
     This creates a channel with SSL and :class:`AuthMetadataPlugin`. This
@@ -98,6 +98,7 @@ def secure_authorized_channel(
         target (str): The host and port of the service.
         ssl_credentials (grpc.ChannelCredentials): Optional SSL channel
             credentials. This can be used to specify different certificates.
+        kwargs: Additional arguments to pass to :func:`grpc.secure_channel`.
 
     Returns:
         grpc.Channel: The created gRPC channel.
@@ -115,4 +116,4 @@ def secure_authorized_channel(
     composite_credentials = grpc.composite_channel_credentials(
         ssl_credentials, google_auth_credentials)
 
-    return grpc.secure_channel(target, composite_credentials)
+    return grpc.secure_channel(target, composite_credentials, **kwargs)

tests/transport/test_grpc.py

@@ -82,7 +82,7 @@ def test_secure_authorized_channel(
     target = 'example.com:80'
 
     channel = google.auth.transport.grpc.secure_authorized_channel(
-        credentials, request, target)
+        credentials, request, target, options=mock.sentinel.options)
 
     # Check the auth plugin construction.
     auth_plugin = metadata_call_credentials.call_args[0][0]
@@ -101,7 +101,8 @@ def test_secure_authorized_channel(
 
     # Check the channel call.
     secure_channel.assert_called_once_with(
-        target, composite_channel_credentials.return_value)
+        target, composite_channel_credentials.return_value,
+        options=mock.sentinel.options)
     assert channel == secure_channel.return_value