public void SerializeTest()
        {
            var serializationObject = new SerializedTestClass();
            serializationObject.Text = "alamakota";
            serializationObject.Value = 12;

            var jsonSerializer = new JsonSerializer<SerializedTestClass>();
            var json = jsonSerializer.Serialize(serializationObject);

            Assert.AreNotEqual(String.Empty, json);
            Assert.AreEqual("{\"Text\":\"alamakota\",\"Value\":12}", json);
        }
        public async Task WriteAndReadDataFromStorage()
        {
            var folder = Windows.Storage.ApplicationData.Current.LocalFolder;

            var objectToSerialization = new SerializedTestClass() {Text = "Ala ma kota", Value = 120};
            var appDataSerializer = new ApplicationDataSerializer<SerializedTestClass>(folder);

            await appDataSerializer.SaveObject(objectToSerialization, "plik.json");

            var objectFromDeserializtion = await appDataSerializer.GetObject("plik.json");

            Assert.AreEqual("Ala ma kota", objectToSerialization.Text);
            Assert.AreEqual(120, objectFromDeserializtion.Value);
        }