public void TestDatasetBlockwiseSliceCreate()
{
RedirectGlobalsToTempPath();
string filename = nameof(TestDatasetBlockwiseSliceCreate) + "test.dat";
CreateCsvTempFile(filename);
CsvRecordExtractor extractor = new CsvRecordReader(new FileSource(filename)).Extractor("inputs", 1, 2, "targets", 3);
ExtractedDataset dataset = new ExtractedDataset("name", ExtractedDataset.BlockSizeAuto, extractor);
Assert.Throws <ArgumentNullException>(() => new DatasetBlockwiseSlice(null, 0, 0, 1));
Assert.Throws <ArgumentException>(() => new DatasetBlockwiseSlice(dataset, 0, 0, 0));
Assert.Throws <ArgumentException>(() => new DatasetBlockwiseSlice(dataset, -1, 0, 1));
Assert.Throws <ArgumentException>(() => new DatasetBlockwiseSlice(dataset, 0, -1, 1));
Assert.Throws <ArgumentException>(() => new DatasetBlockwiseSlice(dataset, 1, 0, 1));
Assert.Throws <ArgumentException>(() => new DatasetBlockwiseSlice(dataset, 0, 2, 2));
DatasetBlockwiseSlice slice = new DatasetBlockwiseSlice(dataset, 0, 1, 3);
Assert.AreSame(dataset, slice.UnderlyingDataset);
Assert.AreEqual(0, slice.SplitBeginIndex);
Assert.AreEqual(1, slice.SplitEndIndex);
Assert.AreEqual(2, slice.SplitSize);
Assert.AreEqual(3, slice.SplitInterval);
Assert.AreEqual(dataset.Name, slice.Name);
Assert.AreEqual(dataset.TargetBlockSizeRecords, slice.TargetBlockSizeRecords);
Assert.AreEqual(dataset.SectionNames, slice.SectionNames);
DeleteTempFile(filename);
}
public void TestDatasetBlockwiseSliceFetch()
{
RedirectGlobalsToTempPath();
string filename = nameof(TestDatasetBlockwiseSliceFetch) + "test.dat";
CreateCsvTempFile(filename);
CsvRecordExtractor extractor = new CsvRecordReader(new FileSource(filename)).Extractor("inputs", 0, "targets", 3);
ExtractedDataset dataset = new ExtractedDataset("name", 1, extractor);
DatasetBlockwiseSlice slice = new DatasetBlockwiseSlice(dataset, 1, 2, 3);
Assert.AreEqual(new float[] { 4.9f }, slice.FetchBlock(0, new CpuFloat32Handler())["inputs"].GetDataAs <float>().GetValuesArrayAs <float>(0, 1));
extractor.Reader?.Dispose();
dataset.Dispose();
DeleteTempFile(filename);
}