public async Task SaveEvents_inserts_Correlation_entity_correctly()
{
// Arrange
var userId = Guid.NewGuid();
var created = new FakeUserCreated();
var correlationId = Guid.NewGuid();
created.Raise(userId);
DateTime now = DateTime.UtcNow;
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
// Act
await sut.SaveEvents <FakeUser>(new[] { created }, correlationId : correlationId);
// Assert
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
Correlation correlation = await db
.Correlations
.Where(
c =>
c.AggregateType == typeof(FakeUser).FullName &&
c.AggregateId == userId &&
c.CorrelationId == correlationId)
.SingleOrDefaultAsync();
correlation.Should().NotBeNull();
correlation.HandledAt.Should().BeCloseTo(now, precision: 100);
}
}
public async Task SaveEvents_does_not_insert_UniqueIndexedProperty_if_property_value_is_null()
{
// Arrange
var userId = Guid.NewGuid();
var created = new FakeUserCreated {
Username = null
};
created.Raise(userId);
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
// Act
await sut.SaveEvents <FakeUser>(new DomainEvent[] { created });
// Assert
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
UniqueIndexedProperty actual = await db
.UniqueIndexedProperties
.Where(
p =>
p.AggregateType == typeof(FakeUser).FullName &&
p.PropertyName == nameof(FakeUserCreated.Username) &&
p.PropertyValue == created.Username)
.SingleOrDefaultAsync();
actual.Should().BeNull();
}
}
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 SaveEvents_inserts_UniqueIndexedProperty_with_value_of_latest_indexed_event()
{
// Arrange
var userId = Guid.NewGuid();
var created = new FakeUserCreated();
var usernameChanged = new FakeUsernameChanged();
var events = new DomainEvent[] { created, usernameChanged };
events.Raise(userId);
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
// Act
await sut.SaveEvents <FakeUser>(events);
// Assert
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
UniqueIndexedProperty actual = await db
.UniqueIndexedProperties
.Where(
p =>
p.AggregateId == userId &&
p.PropertyName == nameof(FakeUserCreated.Username))
.SingleOrDefaultAsync();
actual.PropertyValue.Should().Be(usernameChanged.Username);
actual.Version.Should().Be(usernameChanged.Version);
}
}
public async Task SaveEvents_inserts_Aggregate_correctly_for_new_aggregate_id()
{
// Arrange
var userId = Guid.NewGuid();
var created = new FakeUserCreated();
var events = new DomainEvent[] { created };
events.Raise(userId);
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
// Act
await sut.SaveEvents <FakeUser>(events);
// Assert
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
Aggregate actual = await db
.Aggregates
.Where(a => a.AggregateId == userId)
.SingleOrDefaultAsync();
actual.Should().NotBeNull();
actual.AggregateType.Should().Be(typeof(FakeUser).FullName);
actual.Version.Should().Be(created.Version);
}
}
public async Task SaveEvents_saves_pending_events_correctly()
{
// Arrange
var userId = Guid.NewGuid();
var created = new FakeUserCreated();
var usernameChanged = new FakeUsernameChanged();
var events = new DomainEvent[] { created, usernameChanged };
events.Raise(userId);
var serializer = new JsonMessageSerializer();
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
serializer);
string operationId = Guid.NewGuid().ToString();
var correlationId = Guid.NewGuid();
string contributor = Guid.NewGuid().ToString();
// Act
await sut.SaveEvents <FakeUser>(events, operationId, correlationId, contributor);
// Asseert
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
var pendingEvents = db
.PendingEvents
.Where(e => e.AggregateId == userId)
.OrderBy(e => e.Version)
.ToList();
foreach (var t in pendingEvents.Zip(events, (pending, source) =>
new { Pending = pending, Source = source }))
{
var actual = new
{
t.Pending.Version,
t.Pending.CorrelationId,
t.Pending.Contributor,
Message = serializer.Deserialize(t.Pending.EventJson),
};
actual.ShouldBeEquivalentTo(new
{
t.Source.Version,
OperationId = operationId,
CorrelationId = correlationId,
Contributor = contributor,
Message = t.Source,
},
opts => opts.RespectingRuntimeTypes());
}
}
}
public async Task SaveEvents_saves_events_correctly()
{
// Arrange
var userId = Guid.NewGuid();
var created = new FakeUserCreated();
var usernameChanged = new FakeUsernameChanged();
var events = new DomainEvent[] { created, usernameChanged };
events.Raise(userId);
var serializer = new JsonMessageSerializer();
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
serializer);
// Act
await sut.SaveEvents <FakeUser>(events);
// Asseert
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
IEnumerable <object> actual = db
.PersistentEvents
.Where(e => e.AggregateId == userId)
.OrderBy(e => e.Version)
.AsEnumerable()
.Select(e => new
{
e.AggregateType,
e.Version,
e.EventType,
Payload = serializer.Deserialize(e.EventJson),
})
.ToList();
actual.Should().HaveCount(events.Length);
IEnumerable <object> expected = events.Select(e => new
{
AggregateType = typeof(FakeUser).FullName,
e.Version,
EventType = e.GetType().FullName,
Payload = e,
});
actual.ShouldAllBeEquivalentTo(expected);
}
}
public static void ClassInitialize(TestContext context)
{
_dbContextOptions = new DbContextOptionsBuilder()
.UseSqlServer($@"Server=(localdb)\mssqllocaldb;Database={typeof(SqlEventPublisher_specs).FullName}.Core;Trusted_Connection=True;")
.Options;
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
db.Database.Migrate();
db.Database.ExecuteSqlCommand("DELETE FROM Aggregates");
db.Database.ExecuteSqlCommand("DELETE FROM PersistentEvents");
db.Database.ExecuteSqlCommand("DELETE FROM PendingEvents");
db.Database.ExecuteSqlCommand("DELETE FROM UniqueIndexedProperties");
}
}
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 SaveEvents_sets_message_properties_correctly()
{
// Arrange
var userId = Guid.NewGuid();
var created = new FakeUserCreated();
var usernameChanged = new FakeUsernameChanged();
var events = new DomainEvent[] { created, usernameChanged };
events.Raise(userId);
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
// Act
await sut.SaveEvents <FakeUser>(
events,
correlationId : Guid.NewGuid(),
contributor : Guid.NewGuid().ToString());
// Asseert
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
IEnumerable <object> expected = db
.PendingEvents
.Where(e => e.AggregateId == userId)
.OrderBy(e => e.Version)
.AsEnumerable()
.Select(e => new { e.MessageId, e.CorrelationId, e.Contributor })
.ToList();
IEnumerable <object> actual = db
.PersistentEvents
.Where(e => e.AggregateId == userId)
.OrderBy(e => e.Version)
.AsEnumerable()
.Select(e => new { e.MessageId, e.CorrelationId, e.Contributor })
.ToList();
actual.ShouldAllBeEquivalentTo(expected);
}
}
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);
}
}
public async Task SaveEvents_fails_if_unique_indexed_property_duplicate()
{
// Arrange
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
string duplicateUserName = Guid.NewGuid().ToString();
var macId = Guid.NewGuid();
var macCreated = new FakeUserCreated {
Username = duplicateUserName
};
macCreated.Raise(macId);
await sut.SaveEvents <FakeUser>(new[] { macCreated });
// Act
var toshId = Guid.NewGuid();
var toshCreated = new FakeUserCreated {
Username = duplicateUserName
};
toshCreated.Raise(toshId);
Func <Task> action = () => sut.SaveEvents <FakeUser>(new[] { toshCreated });
// Assert
action.ShouldThrow <Exception>();
using (var db = new FakeEventStoreDbContext(_dbContextOptions))
{
IQueryable <PersistentEvent> query =
from e in db.PersistentEvents
where e.AggregateId == toshId
select e;
(await query.AnyAsync()).Should().BeFalse();
}
}