public void ClientSerializationXMLTest()
{
Client client = new Client("Tadeusz", "Nowak", "Random Street 23", "Lodz", 2005);
XMLConverter xmlc = new XMLConverter();
xmlc.writeObject(client, "client.txt");
Client secondClient = xmlc.readClient("client.txt");
Assert.AreEqual(client.ToString(), secondClient.ToString());
}