public async Task StreamingEventsAreBufferedUntilStateOfTheWorldIsRetrieved()
{
var mre = new ManualResetEvent(false);
var existingEvent = new TestAggregateCreatedEvent(new Guid("b166fbb3-b7f9-49d2-8a61-0b4df5fff561"), "Test1");
A.CallTo(() => _persistenceClient.Retrieve(typeof(TestAggregateCreatedEvent)))
.Returns(Task.Run(() =>
{
mre.WaitOne();
return(new IEvent[] { existingEvent });
}));
var reader = new TestAggregateReader(_persistenceClient, _streamingClient);
await Task.Factory.StartNew(async() =>
{
await reader.StartAsync();
Assert.AreEqual(2, reader.Get().Length);
_allEventsSubject.OnNext(new TestAggregateCreatedEvent(new Guid("15dd702a-7106-434e-9aa0-2f8f67fdd85d"), "Test3"));
Assert.AreEqual(3, reader.Get().Length);
});
Assert.AreEqual(0, reader.Get().Length);
_allEventsSubject.OnNext(new TestAggregateCreatedEvent(new Guid("db8cedf3-a4f8-4d0c-835b-e05692d69937"), "Test2"));
Assert.AreEqual(0, reader.Get().Length);
mre.Set();
}
public async Task OnSaveEventPublishIsCalled()
{
var writer = new TestAggregateWriter(_persistenceClient, _streamingClient);
await writer.StartAsync();
var createdEvent = new TestAggregateCreatedEvent(new Guid("b166fbb3-b7f9-49d2-8a61-0b4df5fff561"), "Test1");
await writer.Save(createdEvent);
A.CallTo(() => _persistenceClient.Save(
A <string> .Ignored,
A <int> .Ignored,
A <IEvent> .Ignored))
.MustHaveHappenedOnceExactly();
A.CallTo(() => _streamingClient.Publish(A <IEvent> .Ignored))
.MustHaveHappenedOnceExactly();
}
public async Task ExistingEventsAreLoadedAndProcessedOnStart()
{
var existingEvent = new TestAggregateCreatedEvent(new Guid("b166fbb3-b7f9-49d2-8a61-0b4df5fff561"), "Test1");
A.CallTo(() => _persistenceClient.Retrieve(typeof(TestAggregateCreatedEvent)))
.Returns(new IEvent[] { existingEvent });
var reader = new TestAggregateReader(_persistenceClient, _streamingClient);
await reader.StartAsync();
var aggregates = reader.Get();
Assert.AreEqual(1, aggregates.Length);
var actualAggregate = aggregates[0];
Assert.AreEqual(existingEvent.AggregateId, actualAggregate.Id);
Assert.AreEqual(existingEvent.Foo, actualAggregate.Foo);
}
public async Task ExistingEventsWithSameAggregateIdAreAppliedToSameAggregate()
{
var createdEvent = new TestAggregateCreatedEvent(new Guid("b166fbb3-b7f9-49d2-8a61-0b4df5fff561"), "Test1_Initial");
var updatedEvent = new TestAggregateUpdatedEvent(new Guid("b166fbb3-b7f9-49d2-8a61-0b4df5fff561"), "Test1_Updated");
A.CallTo(() => _persistenceClient.Retrieve(typeof(TestAggregateCreatedEvent)))
.Returns(new IEvent[] { createdEvent });
A.CallTo(() => _persistenceClient.Retrieve(typeof(TestAggregateUpdatedEvent)))
.Returns(new IEvent[] { updatedEvent });
var reader = new TestAggregateReader(_persistenceClient, _streamingClient);
await reader.StartAsync();
var aggregates = reader.Get();
Assert.AreEqual(1, aggregates.Length);
var actualAggregate = aggregates[0];
Assert.AreEqual(updatedEvent.Foo, actualAggregate.Foo);
}
public async Task WhenSavingNewEventUsesVersionOfAggregateAsExpectedVersion()
{
var createdEvent = new TestAggregateCreatedEvent(new Guid("b166fbb3-b7f9-49d2-8a61-0b4df5fff561"), "Test1_Initial");
var updatedEvent = new TestAggregateUpdatedEvent(new Guid("b166fbb3-b7f9-49d2-8a61-0b4df5fff561"), "Test1_Updated");
A.CallTo(() => _persistenceClient.Retrieve(typeof(TestAggregateCreatedEvent)))
.Returns(new IEvent[] { createdEvent });
A.CallTo(() => _persistenceClient.Retrieve(typeof(TestAggregateUpdatedEvent)))
.Returns(new IEvent[] { updatedEvent });
var writer = new TestAggregateWriter(_persistenceClient, _streamingClient);
await writer.StartAsync();
var newUpdatedEvent = new TestAggregateUpdatedEvent(new Guid("b166fbb3-b7f9-49d2-8a61-0b4df5fff561"), "Test1_Updated_SecondTime");
await writer.Save(newUpdatedEvent);
A.CallTo(() => _persistenceClient.Save(
"TestAggregateRoot_b166fbb3-b7f9-49d2-8a61-0b4df5fff561",
1,
A <IEvent> .Ignored))
.MustHaveHappenedOnceExactly();
}
private void When(TestAggregateCreatedEvent createdEvent)
{
Id = createdEvent.AggregateId;
Foo = createdEvent.Foo;
}
private void Apply(TestAggregateCreatedEvent e)
{
Id = e.SourceId;
Value = e.Value;
}
