public async Task GetBatchPublishedProviderIdsDelegatesToPublishingEndPoint()
        {
            string batchId = NewRandomString();

            IEnumerable <string> expectedResponse = ArraySegment <string> .Empty;

            _publishingApiClient.GetBatchPublishedProviderIds(batchId)
            .Returns(new ApiResponse <IEnumerable <string> >(HttpStatusCode.OK, expectedResponse));

            OkObjectResult result = await _publishController.GetBatchPublishedProviderIds(batchId) as OkObjectResult;

            result?
            .Value
            .Should()
            .BeSameAs(expectedResponse);
        }