def test_credentials_transport_error():
# It is an error to provide credentials and a transport instance.
transport = transports.PredictionServiceGrpcTransport(
credentials=credentials.AnonymousCredentials(),
)
with pytest.raises(ValueError):
client = PredictionServiceClient(
credentials=credentials.AnonymousCredentials(), transport=transport,
)
# It is an error to provide a credentials file and a transport instance.
transport = transports.PredictionServiceGrpcTransport(
credentials=credentials.AnonymousCredentials(),
)
with pytest.raises(ValueError):
client = PredictionServiceClient(
client_options={"credentials_file": "credentials.json"},
transport=transport,
)
# It is an error to provide scopes and a transport instance.
transport = transports.PredictionServiceGrpcTransport(
credentials=credentials.AnonymousCredentials(),
)
with pytest.raises(ValueError):
client = PredictionServiceClient(
client_options={"scopes": ["1", "2"]}, transport=transport,
)
def test_transport_instance():
# A client may be instantiated with a custom transport instance.
transport = transports.PredictionServiceGrpcTransport(
credentials=credentials.AnonymousCredentials(),
)
client = PredictionServiceClient(transport=transport)
assert client.transport is transport
def test_prediction_service_grpc_transport_channel():
channel = grpc.insecure_channel("http://localhost/")
# Check that channel is used if provided.
transport = transports.PredictionServiceGrpcTransport(
host="squid.clam.whelk", channel=channel,
)
assert transport.grpc_channel == channel
assert transport._host == "squid.clam.whelk:443"
assert transport._ssl_channel_credentials == None
def test_prediction_service_transport_auth_adc():
# If credentials and host are not provided, the transport class should use
# ADC credentials.
with mock.patch.object(auth, "default") as adc:
adc.return_value = (credentials.AnonymousCredentials(), None)
transports.PredictionServiceGrpcTransport(
host="squid.clam.whelk", quota_project_id="octopus"
)
adc.assert_called_once_with(
scopes=("https://www.googleapis.com/auth/cloud-platform",),
quota_project_id="octopus",
)
def test_transport_get_channel():
# A client may be instantiated with a custom transport instance.
transport = transports.PredictionServiceGrpcTransport(
credentials=credentials.AnonymousCredentials(),
)
channel = transport.grpc_channel
assert channel
transport = transports.PredictionServiceGrpcAsyncIOTransport(
credentials=credentials.AnonymousCredentials(),
)
channel = transport.grpc_channel
assert channel