public async Task StoredEventsAreAppliedIfThereAreMissingEvents()
{
// Arrange
var thingyId = A <ThingyId>();
var emittedEvents = new[]
{
ToDomainEvent(thingyId, A <ThingyPingEvent>(), 3),
ToDomainEvent(thingyId, A <ThingyPingEvent>(), 4),
};
var missingEvents = new[]
{
ToDomainEvent(thingyId, A <ThingyPingEvent>(), 2)
};
var storedEvents = Enumerable.Empty <IDomainEvent <ThingyAggregate, ThingyId> >()
.Concat(missingEvents)
.Concat(emittedEvents)
.ToArray();
Arrange_ReadModelStore_UpdateAsync(ReadModelEnvelope <TestReadModel> .With(
thingyId.Value,
A <TestReadModel>(),
1));
_eventStoreMock.Arrange_LoadEventsAsync(storedEvents);
// Act
await Sut.UpdateReadStoresAsync(emittedEvents, CancellationToken.None).ConfigureAwait(false);
// Assert
AppliedDomainEvents.Should().HaveCount(storedEvents.Length);
AppliedDomainEvents.Should().BeEquivalentTo(storedEvents);
}
public async Task AlreadyAppliedEventsAreNotApplied()
{
// Arrange
var thingyId = A <ThingyId>();
var emittedEvents = new[]
{
ToDomainEvent(thingyId, A <ThingyPingEvent>(), 3),
};
var resultingReadModelUpdates = Arrange_ReadModelStore_UpdateAsync(ReadModelEnvelope <TestReadModel> .With(
thingyId.Value,
A <TestReadModel>(),
3));
// Act
await Sut.UpdateReadStoresAsync(emittedEvents, CancellationToken.None).ConfigureAwait(false);
// Assert
AppliedDomainEvents.Should().BeEmpty();
resultingReadModelUpdates.Single().IsModified.Should().BeFalse();
}
public async Task OutdatedEventsAreNotApplied()
{
// Arrange
var thingyId = A <ThingyId>();
var emittedEvents = new[]
{
ToDomainEvent(thingyId, A <ThingyPingEvent>(), 1),
};
Arrange_ReadModelStore_UpdateAsync(ReadModelEnvelope <TestReadModel> .With(
thingyId.Value,
A <TestReadModel>(),
3));
// Act
await Sut.UpdateReadStoresAsync(emittedEvents, CancellationToken.None);
// Assert
AppliedDomainEvents.Should().BeEmpty();
}
public async Task EventsAreApplied()
{
// Arrange
var thingyId = A <ThingyId>();
var emittedEvents = new[]
{
ToDomainEvent(thingyId, A <ThingyPingEvent>(), 3),
};
Arrange_ReadModelStore_UpdateAsync(ReadModelEnvelope <TestReadModel> .With(
thingyId.Value,
A <TestReadModel>(),
2));
// Act
await Sut.UpdateReadStoresAsync(emittedEvents, CancellationToken.None).ConfigureAwait(false);
// Assert
AppliedDomainEvents.Should().HaveCount(emittedEvents.Length);
AppliedDomainEvents.Should().BeEquivalentTo(emittedEvents);
}
