public async Task When_a_snapshot_is_not_up_to_date_then_GetLatest_retrieves_later_events_and_applies_them()
{
// arrange
var snapshotRepository = new InMemorySnapshotRepository();
Configuration.Current.UseDependency <ISnapshotRepository>(_ => snapshotRepository);
var snapshot = new CustomerAccountSnapshot
{
AggregateId = Any.Guid(),
Version = 123,
AggregateTypeName = AggregateType <CustomerAccount> .EventStreamName,
EmailAddress = Any.Email(),
NoSpam = true,
UserName = Any.FullName(),
ETags = new[] { Any.Word(), Any.Word() }
};
await snapshotRepository.SaveSnapshot(snapshot);
await SaveEventsDirectly(new CustomerAccount.RequestedSpam
{
AggregateId = snapshot.AggregateId,
SequenceNumber = 124
}.ToStoredEvent());
// act
var account = await CreateRepository <CustomerAccount>().GetLatest(snapshot.AggregateId);
// assert
account.Version.Should().Be(124);
account.NoSpam.Should().Be(false);
}
public async Task GetLatest_can_return_an_aggregate_built_from_a_snapshot_projection()
{
// arrange
var snapshotRepository = new InMemorySnapshotRepository();
Configuration.Current.UseDependency <ISnapshotRepository>(_ => snapshotRepository);
var snapshot = new CustomerAccountSnapshot
{
AggregateId = Any.Guid(),
Version = 123,
AggregateTypeName = AggregateType <CustomerAccount> .EventStreamName,
EmailAddress = Any.Email(),
NoSpam = true,
UserName = Any.FullName(),
ETags = new[] { Any.Word(), Any.Word() }
};
await snapshotRepository.SaveSnapshot(snapshot);
// act
var account = await CreateRepository <CustomerAccount>().GetLatest(snapshot.AggregateId);
// assert
account.Id.Should().Be(snapshot.AggregateId);
account.Version.Should().Be(snapshot.Version);
account.EmailAddress.Should().Be(snapshot.EmailAddress);
account.UserName.Should().Be(snapshot.UserName);
account.NoSpam.Should().Be(snapshot.NoSpam);
foreach (var etag in snapshot.ETags)
{
account.HasETag(etag).Should().BeTrue("etags are expected to be loaded from the snapshot");
}
}
public async Task When_new_events_are_added_to_an_aggregate_sourced_from_a_stale_snapshot_the_version_increments_correctly()
{
// arrange
var snapshotRepository = new InMemorySnapshotRepository();
Configuration.Current.UseDependency <ISnapshotRepository>(_ => snapshotRepository);
var snapshot = new CustomerAccountSnapshot
{
AggregateId = Any.Guid(),
Version = 122,
AggregateTypeName = AggregateType <CustomerAccount> .EventStreamName,
EmailAddress = Any.Email(),
NoSpam = true,
UserName = Any.FullName(),
ETags = new[] { Any.Word(), Any.Word() }
};
await snapshotRepository.SaveSnapshot(snapshot);
await SaveEventsDirectly(new CustomerAccount.RequestedSpam
{
AggregateId = snapshot.AggregateId,
SequenceNumber = snapshot.Version + 1
}.ToStoredEvent());
// act
var account = await CreateRepository <CustomerAccount>().GetLatest(snapshot.AggregateId);
account.Apply(new RequestSpam());
// assert
account.Version.Should().Be(124);
}
public async Task GetLatest_can_return_an_aggregate_built_from_a_snapshot_projection()
{
// arrange
var snapshotRepository = new InMemorySnapshotRepository();
Configuration.Current.UseDependency <ISnapshotRepository>(_ => snapshotRepository);
var etags = new[] { Any.Word(), Any.Word() };
var bloomFilter = new BloomFilter();
etags.ForEach(bloomFilter.Add);
var snapshot = new CustomerAccountSnapshot
{
AggregateId = Any.Guid(),
Version = 123,
AggregateTypeName = AggregateType <CustomerAccount> .EventStreamName,
EmailAddress = Any.Email(),
NoSpam = true,
UserName = Any.FullName(),
ETags = bloomFilter
};
await snapshotRepository.SaveSnapshot(snapshot);
// act
var account = await CreateRepository <CustomerAccount>().GetLatest(snapshot.AggregateId);
// assert
account.Id.Should().Be(snapshot.AggregateId);
account.Version.Should().Be(snapshot.Version);
account.EmailAddress.Should().Be(snapshot.EmailAddress);
account.UserName.Should().Be(snapshot.UserName);
account.NoSpam.Should().Be(snapshot.NoSpam);
}
