public void TestString()
{
var stream = new MsgPackStream();
var testString = "Test string";
var length = Encoding.UTF8.GetByteCount(testString);
stream.WriteString(testString);
Assert.AreEqual(stream.Position, length);
stream.Position = 0;
Assert.AreEqual(testString, stream.ReadString(unchecked ((uint)length)));
}