Beispiel #1
0
        public void TestAllowingEmptyDatasets(bool allowEmptyDatasetExtractions)
        {
            Pipeline p = SetupPipeline();

            TruncateDataTable();

            var host = new ExtractionPipelineUseCase(_request.Configuration.Project, _request, p, DataLoadInfo.Empty);

            var engine = host.GetEngine(p, new ThrowImmediatelyDataLoadEventListener());

            host.Source.AllowEmptyExtractions = allowEmptyDatasetExtractions;

            var token = new GracefulCancellationToken();

            if (allowEmptyDatasetExtractions)
            {
                var dt = host.Source.GetChunk(new ThrowImmediatelyDataLoadEventListener(), token);
                Assert.IsNull(host.Source.GetChunk(new ThrowImmediatelyDataLoadEventListener(), token));

                Assert.AreEqual(0, dt.Rows.Count);
                Assert.AreEqual(3, dt.Columns.Count);
            }
            else
            {
                var exception = Assert.Throws <Exception>(() => host.Source.GetChunk(new ThrowImmediatelyDataLoadEventListener(), token));

                Assert.IsTrue(exception.Message.StartsWith("There is no data to load, query returned no rows, query was"));
            }

            p.DeleteInDatabase();
        }