def test_get_topic_flattened_error():
    client = PublisherClient(credentials=credentials.AnonymousCredentials(), )

    # Attempting to call a method with both a request object and flattened
    # fields is an error.
    with pytest.raises(ValueError):
        client.get_topic(
            pubsub.GetTopicRequest(),
            topic='topic_value',
        )
def test_get_topic(transport: str = 'grpc'):
    client = PublisherClient(
        credentials=credentials.AnonymousCredentials(),
        transport=transport,
    )

    # Everything is optional in proto3 as far as the runtime is concerned,
    # and we are mocking out the actual API, so just send an empty request.
    request = pubsub.GetTopicRequest()

    # Mock the actual call within the gRPC stub, and fake the request.
    with mock.patch.object(type(client._transport.get_topic),
                           '__call__') as call:
        # Designate an appropriate return value for the call.
        call.return_value = pubsub.Topic(
            name='name_value',
            kms_key_name='kms_key_name_value',
        )

        response = client.get_topic(request)

        # Establish that the underlying gRPC stub method was called.
        assert len(call.mock_calls) == 1
        _, args, _ = call.mock_calls[0]

        assert args[0] == request

    # Establish that the response is the type that we expect.
    assert isinstance(response, pubsub.Topic)
    assert response.name == 'name_value'
    assert response.kms_key_name == 'kms_key_name_value'
def test_get_topic_field_headers():
    client = PublisherClient(credentials=credentials.AnonymousCredentials(), )

    # Any value that is part of the HTTP/1.1 URI should be sent as
    # a field header. Set these to a non-empty value.
    request = pubsub.GetTopicRequest(topic='topic/value', )

    # Mock the actual call within the gRPC stub, and fake the request.
    with mock.patch.object(type(client._transport.get_topic),
                           '__call__') as call:
        call.return_value = pubsub.Topic()
        client.get_topic(request)

        # Establish that the underlying gRPC stub method was called.
        assert len(call.mock_calls) == 1
        _, args, _ = call.mock_calls[0]
        assert args[0] == request

    # Establish that the field header was sent.
    _, _, kw = call.mock_calls[0]
    assert (
        'x-goog-request-params',
        'topic=topic/value',
    ) in kw['metadata']
def test_get_topic_flattened():
    client = PublisherClient(credentials=credentials.AnonymousCredentials(), )

    # Mock the actual call within the gRPC stub, and fake the request.
    with mock.patch.object(type(client._transport.get_topic),
                           '__call__') as call:
        # Designate an appropriate return value for the call.
        call.return_value = pubsub.Topic()

        # Call the method with a truthy value for each flattened field,
        # using the keyword arguments to the method.
        response = client.get_topic(topic='topic_value', )

        # Establish that the underlying call was made with the expected
        # request object values.
        assert len(call.mock_calls) == 1
        _, args, _ = call.mock_calls[0]
        assert args[0].topic == 'topic_value'