@Test
public void shouldSerializeAllBasicFields() {

String expectedResult = "{\"order\": {\"price\": 15.0,\"comments\": \"pack it nicely, please\"}}";
Order order = new Order(new Client("guilherme silveira"), 15.0, "pack it nicely, please");
serialization.from(order).serialize();
assertThat(result(), is(equalTo(expectedResult)));
}