public void NumberStreamReaderReadContentFromEnd()
{
using (var stream = new MemoryStream(Encoding.ASCII.GetBytes("-10\n450")))
{
using (var numbersReader = new NumberStreamReader(stream))
{
numbersReader.Stream.Seek(0, SeekOrigin.End);
var result = numbersReader.ReadContentFromEnd(2).FirstOrDefault();
Assert.IsNotNull(result);
Assert.AreEqual(2, result.Length);
Assert.AreEqual(53, result[0]);
Assert.AreEqual(48, result[1]);
numbersReader.Stream.Seek(-1, SeekOrigin.End);
result = numbersReader.ReadContentFromEnd(2).FirstOrDefault();
Assert.IsNotNull(result);
Assert.AreEqual(2, result.Length);
Assert.AreEqual(52, result[0]);
Assert.AreEqual(53, result[1]);
numbersReader.Stream.Seek(1, SeekOrigin.Begin);
result = numbersReader.ReadContentFromEnd(2).FirstOrDefault();
Assert.IsNotNull(result);
Assert.AreEqual(1, result.Length);
Assert.AreEqual(NumberStreamReader.Number_Zero, result[0]);
}
}
}
