public void DiscardInBuffer()
{
DGSerial serial1 = new DGSerial(_portName1, _baudRate1);
DGSerial serial2 = new DGSerial(_portName2, _baudRate2);
serial1.Open();
serial2.Open();
byte[] buffertx = new byte[serial2.Get().ReadBufferSize];
serial1.WriteBytes(buffertx);
serial1.WriteBytes(buffertx);
serial1.WriteBytes(buffertx);
Assert.That(serial2.BytesToRead(), Is.EqualTo(serial2.Get().ReadBufferSize));
serial2.DiscardInBuffer();
Assert.That(serial2.BytesToRead(), Is.EqualTo(0));
serial1.Close();
serial2.Close();
}