private void checkSerialization(Object obj, boolean expectedCompression) {
// verify serialization-deserialization round trip
byte[] blob = serializer.toBinary(obj);
assertEquals(expectedCompression, serializer.isGZipped(blob));
Object obj2 = serializer.fromBinary(blob, serializer.manifest(obj));
assertEquals(obj, obj2);
}
@Test
public void testRenameClass() {
OrderAdded order1 = OrderAdded.builder().shoppingCartId("1234").build();
byte[] blob = serializer.toBinary(order1);
OrderPlaced order2 = (OrderPlaced) serializer.fromBinary(blob, OrderAdded.class.getName());
assertEquals(order1.getShoppingCartId(), order2.getShoppingCartId());
}
@Test
public void testRenameField() {
docs.home.serialization.v1.ItemAdded event1 =
docs.home.serialization.v1.ItemAdded.builder()
.shoppingCartId("123")
.productId("ab123")
.quantity(2)
.build();
byte[] blob = serializer.toBinary(event1);
docs.home.serialization.v2c.ItemAdded event2 =
(docs.home.serialization.v2c.ItemAdded)
serializer.fromBinary(blob, docs.home.serialization.v2c.ItemAdded.class.getName());
assertEquals(event1.getProductId(), event2.getItemId());
assertEquals(event1.getQuantity(), event2.getQuantity());
}
@Test
public void testStructuralChanges() {
docs.home.serialization.v1.Customer cust1 =
docs.home.serialization.v1.Customer.builder()
.name("A")
.street("B")
.city("C")
.zipCode("D")
.country("E")
.build();
byte[] blob = serializer.toBinary(cust1);
Customer cust2 = (Customer) serializer.fromBinary(blob, Customer.class.getName());
assertEquals(cust1.getName(), cust2.getName());
assertEquals(cust1.getStreet(), cust2.getShippingAddress().getStreet());
assertEquals(cust1.getCity(), cust2.getShippingAddress().getCity());
assertEquals(cust1.getZipCode(), cust2.getShippingAddress().getZipCode());
assertEquals(cust1.getCountry(), cust2.getShippingAddress().getCountry());
}
@Test
public void testAddMandatoryField() {
docs.home.serialization.v1.ItemAdded event1 =
docs.home.serialization.v1.ItemAdded.builder()
.shoppingCartId("123")
.productId("ab123")
.quantity(2)
.build();
byte[] blob = serializer.toBinary(event1);
docs.home.serialization.v2b.ItemAdded event2 =
(docs.home.serialization.v2b.ItemAdded)
serializer.fromBinary(blob, docs.home.serialization.v2b.ItemAdded.class.getName());
assertEquals(event1.getQuantity(), event2.getQuantity());
assertEquals(0.0, event2.getDiscount(), 0.000001);
checkSerialization(
docs.home.serialization.v2b.ItemAdded.builder()
.shoppingCartId("123")
.productId("ab123")
.quantity(2)
.discount(0.1)
.build(),
false);
}
@Test
public void testAddOptionalField() {
docs.home.serialization.v1.ItemAdded event1 =
docs.home.serialization.v1.ItemAdded.builder()
.shoppingCartId("123")
.productId("ab123")
.quantity(2)
.build();
byte[] blob = serializer.toBinary(event1);
ItemAdded event2 = (ItemAdded) serializer.fromBinary(blob, ItemAdded.class.getName());
assertEquals(event1.getQuantity(), event2.getQuantity());
assertEquals(Optional.empty(), event2.getDiscount());
assertEquals("", event2.getNote());
checkSerialization(
ItemAdded.builder()
.shoppingCartId("123")
.productId("ab123")
.quantity(2)
.discount(0.1)
.note("thanks")
.build(),
false);
}