public async Task throw_on_write_when_expected_version_does_not_match()
{
var aggregateId = Guid.NewGuid();
var streamId =
StreamIdBuilder.Create()
.WithAggregateId(aggregateId)
.WithAggregateType <DummyAggregate>()
.Build();
var writeEvents = new List <Event> {
new DummyCreatedEvent(aggregateId, "The name", "https://url.example.com"),
new DummyNameChangedEvent(aggregateId, "The new name"),
new DummyUrlChangedEvent(aggregateId, "https://newurl.example.com")
};
//Write 3 events to the stream, this sets the version to 2
var sut = new SqlStreamStoreStreamWriter(_storeProvider, _serializer);
await sut.AppendEventsToStream(streamId, writeEvents);
//Write should fail
var changeEvent = new DummyUrlChangedEvent(aggregateId, "https://newnewurl.example.com");
await Assert.ThrowsAsync <WrongExpectedVersionException>(
async() => await sut.AppendEventsToStream(streamId, new List <Event> {
changeEvent
}, 1));
}
public async Task write_events_to_stream_when_expected_version_matches()
{
var aggregateId = Guid.NewGuid();
var streamId =
StreamIdBuilder.Create()
.WithAggregateId(aggregateId)
.WithAggregateType <DummyAggregate>()
.Build();
var writeEvents = new List <Event> {
new DummyCreatedEvent(aggregateId, "The name", "https://url.example.com"),
new DummyNameChangedEvent(aggregateId, "The new name"),
new DummyUrlChangedEvent(aggregateId, "https://newurl.example.com")
};
var sut = new SqlStreamStoreStreamWriter(_storeProvider, _serializer);
await sut.AppendEventsToStream(streamId, writeEvents);
var changeEvent = new DummyUrlChangedEvent(aggregateId, "https://newnewurl.example.com");
await sut.AppendEventsToStream(streamId, new List <Event> {
changeEvent
}, 2);
}
private void Apply(DummyUrlChangedEvent @event)
{
_url = @event.Url;
}