org.axonframework.test.AxonAssertionError: One of the events contained different values than expected

Imported from Google Groups
1

I added a timestamp field to my Event and now the unit test fails. Even though the expected and actual are the exact same?

@Test
public void shouldCreateAggregateAndRaiseDemandEvent() throws Exception {
    String sku = "303";
    fixture
            .given()
            .when(new StockItemSVSupplyCommand(sku, 8))
            .expectReturnValue(null)
            .expectEvents(new StockItemCreatedEvent(sku,0), new StockItemSupplyEvent(sku, 8));
}





Abstract Event Object
2

The problem is that your command handler which handles StockItemSVSupplyCommand produces the published events and they are not at the exact same instant of the events you create in: .expectEvents(new StockItemCreatedEvent(sku,0), new StockItemSupplyEvent(sku, 8)).

The real issue here is that you shouldn’t add a timestamp to your events. The way to get the timestamp of the event is to annotate a parameter of your event handler method with @Timestamp (org.axonframework.eventhandling.Timestamp).

Here is a sample event handler method from one of my view updaters:

`

@EventHandler
public void on(WeightDimsCapturedEvent event, @SequenceNumber long aggregateVersion,
@Timestamp Instant occurrenceInstant) {
PkgQO pkgQO = repository.findOne(event.getPkgId());
pkgQO.updateAggregateVersion(aggregateVersion);
pkgQO.addWeightDims(event.getWeightDims());
pkgQO.updateLastModified(event.getAgentId(), occurrenceInstant);
repository.save(pkgQO);
}

`

So as you can see, I update my view with the timestamp of the event occurrence. Also, note that I get the aggregate version (the sequence number of the event within the aggregate stream).

3

Ah Troy, like that, thanks mate.

Great solution.