public void TestCsvRecordReaderRead()
{
string filename = ".unittestscsvrecorreader" + nameof(TestCsvRecordReaderRead);
CreateCsvTempFile(filename);
FileSource source = new FileSource(filename, Path.GetTempPath());
CsvRecordReader reader = new CsvRecordReader(source);
Assert.Throws <InvalidOperationException>(() => reader.Read(3));
reader.Prepare();
string[][] lineparts = (string[][])reader.Read(2);
Assert.AreEqual(2, lineparts.Length);
Assert.AreEqual(5, lineparts[0].Length);
Assert.AreEqual(new[] { "5.1", "3.5", "1.4", "0.2", "Iris-setosa" }, lineparts[0]);
lineparts = (string[][])reader.Read(3);
Assert.AreEqual(1, lineparts.Length);
Assert.AreEqual(5, lineparts[0].Length);
reader.Dispose();
DeleteTempFile(filename);
}