public async Task SaveEvents_fails_if_version_of_first_event_not_follows_aggregate()
{
// Arrange
var userId = Guid.NewGuid();
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
var aggregate = new Aggregate
{
AggregateId = userId,
AggregateType = typeof(FakeUser).FullName,
Version = 1,
};
db.Aggregates.Add(aggregate);
await db.SaveChangesAsync();
}
var usernameChanged = new FakeUsernameChanged();
usernameChanged.Raise(userId, 2);
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
// Act
Func <Task> action = () => sut.SaveEvents <FakeUser>(new[] { usernameChanged });
// Assert
action.ShouldThrow <ArgumentException>().Where(x => x.ParamName == "events");
}
public async Task FlushPendingEvents_sends_events_correctly()
{
// Arrange
var created = new FakeUserCreated();
var usernameChanged = new FakeUsernameChanged();
var sourceId = Guid.NewGuid();
var events = new DomainEvent[] { created, usernameChanged };
events.Raise(sourceId);
var envelopes = new List <Envelope>();
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
var serializer = new JsonMessageSerializer();
foreach (DomainEvent e in events)
{
var envelope = new Envelope(
messageId: Guid.NewGuid(),
correlationId: Guid.NewGuid(),
contributor: Guid.NewGuid().ToString(),
message: e);
envelopes.Add(envelope);
db.PendingEvents.Add(PendingEvent.FromEnvelope <FakeUser>(envelope, serializer));
}
await db.SaveChangesAsync();
}
var messageBus = new MessageBus();
var sut = new SqlEventPublisher(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer(),
messageBus);
// Act
await sut.FlushPendingEvents <FakeUser>(sourceId, CancellationToken.None);
// Assert
messageBus.Sent.ShouldAllBeEquivalentTo(envelopes, opts => opts.RespectingRuntimeTypes());
}
public async Task FlushPendingEvents_deletes_pending_events()
{
// Arrange
var sourceId = Guid.NewGuid();
var created = new FakeUserCreated();
var usernameChanged = new FakeUsernameChanged();
var events = new DomainEvent[] { created, usernameChanged };
events.Raise(sourceId);
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
var serializer = new JsonMessageSerializer();
foreach (DomainEvent e in events)
{
var envelope = new Envelope(e);
db.PendingEvents.Add(PendingEvent.FromEnvelope <FakeUser>(envelope, serializer));
}
await db.SaveChangesAsync();
}
var sut = new SqlEventPublisher(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer(),
Mock.Of <IMessageBus>());
// Act
await sut.FlushPendingEvents <FakeUser>(sourceId);
// Assert
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
bool actual = await db
.PendingEvents
.Where(e => e.AggregateId == sourceId)
.AnyAsync();
actual.Should().BeFalse();
}
}
public async Task SaveEvents_updates_Aggregate_correctly_for_existing_aggregate_id()
{
// Arrange
var userId = Guid.NewGuid();
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
var aggregate = new Aggregate
{
AggregateId = userId,
AggregateType = typeof(FakeUser).FullName,
Version = 1,
};
db.Aggregates.Add(aggregate);
await db.SaveChangesAsync();
}
var usernameChanged = new FakeUsernameChanged();
usernameChanged.Raise(userId, 1);
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
// Act
await sut.SaveEvents <FakeUser>(new[] { usernameChanged });
// Assert
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
Aggregate actual = await db
.Aggregates
.Where(a => a.AggregateId == userId)
.SingleOrDefaultAsync();
actual.Version.Should().Be(usernameChanged.Version);
}
}
