public void SaveEvents_fails_if_events_contains_null()
{
// Arrange
var userId = Guid.NewGuid();
var created = new FakeUserCreated();
created.Raise(userId);
var events = new DomainEvent[] { created, null };
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
// Act
Func <Task> action = () => sut.SaveEvents <FakeUser>(events);
// Assert
action.ShouldThrow <ArgumentException>().Where(x => x.ParamName == "events");
}
public async Task SaveEvents_commits_once()
{
var userId = Guid.NewGuid();
var events = new DomainEvent[]
{
new FakeUserCreated(),
new FakeUsernameChanged(),
};
events.Raise(userId);
var context = new DbContextSpy(_dbContextOptions);
var sut = new SqlEventStore(
() => context,
new JsonMessageSerializer());
await sut.SaveEvents <FakeUser>(events);
context.CommitCount.Should().Be(1);
}
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 FlushAllPendingEvents_sends_app_pending_events()
{
// Arrange
IEnumerable <FakeUserCreated> createdEvents = _fixture
.Build <FakeUserCreated>()
.With(e => e.Version, 1)
.With(e => e.RaisedAt, DateTime.UtcNow)
.CreateMany();
var eventStore = new SqlEventStore(() => new DataContext(), _serializer);
foreach (FakeUserCreated createdEvent in createdEvents)
{
await eventStore.SaveEvents <FakeUser>(new[] { createdEvent });
}
var sentEvents = new List <Envelope>();
Mock.Get(_messageBus)
.Setup(
x =>
x.Send(
It.IsAny <IEnumerable <Envelope> >(),
It.IsAny <CancellationToken>()))
.Callback <IEnumerable <Envelope>, CancellationToken>((batch, t) => sentEvents.AddRange(batch))
.Returns(Task.FromResult(true));
// Act
await _sut.FlushAllPendingEvents(CancellationToken.None);
// Assert
foreach (FakeUserCreated createdEvent in createdEvents)
{
sentEvents
.Select(e => e.Message)
.OfType <FakeUserCreated>()
.Where(e => e.SourceId == createdEvent.SourceId)
.Should()
.ContainSingle()
.Which
.ShouldBeEquivalentTo(createdEvent);
}
}
public async Task FlushAllPendingEvents_sends_all_pending_events()
{
// Arrange
IEnumerable <FakeUserCreated> createdEvents = new[]
{
new FakeUserCreated(),
new FakeUserCreated(),
new FakeUserCreated(),
};
var eventStore = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
foreach (FakeUserCreated createdEvent in createdEvents)
{
createdEvent.Raise(Guid.NewGuid());
await eventStore.SaveEvents <FakeUser>(
new[] { createdEvent },
correlationId : default,
public void SaveEvents_fails_if_db_context_does_not_support_transaction()
{
// Arrange
var created = new FakeUserCreated {
Version = 1
};
string databaseName = nameof(SaveEvents_fails_if_db_context_does_not_support_transaction);
DbContextOptions options = new DbContextOptionsBuilder()
.UseInMemoryDatabase(databaseName)
.Options;
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(options),
new JsonMessageSerializer());
// Act
Func <Task> action = () => sut.SaveEvents <FakeUser>(new[] { created });
// Assert
action.ShouldThrow <InvalidOperationException>();
}
public void SaveEvents_succeeds_if_db_context_supports_transaction()
{
// Arrange
var created = new FakeUserCreated {
Version = 1
};
string databaseName = nameof(SaveEvents_succeeds_if_db_context_supports_transaction);
DbContextOptions options = new DbContextOptionsBuilder()
.UseInMemoryDatabase(databaseName)
.ConfigureWarnings(builder => builder.Ignore(InMemoryEventId.TransactionIgnoredWarning))
.Options;
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
// Act
Func <Task> action = () => sut.SaveEvents <FakeUser>(new[] { created });
// Assert
action.ShouldNotThrow();
}
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 SqlEventStore_features(ITestOutputHelper output)
{
this.output = output;
fixture = new Fixture().Customize(new AutoMoqCustomization());
fixture.Inject <Func <EventStoreDbContext> >(() => new DataContext());
userId = Guid.NewGuid();
serializer = new JsonMessageSerializer();
fixture.Inject(serializer);
sut = fixture.Create <SqlEventStore>();
mockDbContext = Mock.Of <EventStoreDbContext>(
x => x.SaveChangesAsync() == Task.FromResult(default(int)));
mockDbContext.Aggregates = Mock.Of <DbSet <Aggregate> >();
Mock.Get(mockDbContext.Aggregates).SetupData();
mockDbContext.PersistentEvents = Mock.Of <DbSet <PersistentEvent> >();
Mock.Get(mockDbContext.PersistentEvents).SetupData();
mockDbContext.PendingEvents = Mock.Of <DbSet <PendingEvent> >();
Mock.Get(mockDbContext.PendingEvents).SetupData();
mockDbContext.UniqueIndexedProperties = Mock.Of <DbSet <UniqueIndexedProperty> >();
Mock.Get(mockDbContext.UniqueIndexedProperties).SetupData();
using (var db = new DataContext())
{
db.Database.Log = output.WriteLine;
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 SaveEvents_removes_existing_UniqueIndexedProperty_if_property_value_is_null()
{
// Arrange
var userId = Guid.NewGuid();
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
var created = new FakeUserCreated();
created.Raise(userId);
await sut.SaveEvents <FakeUser>(new[] { created });
var usernameChanged = new FakeUsernameChanged {
Username = null
};
usernameChanged.Raise(userId, 1);
// Act
await sut.SaveEvents <FakeUser>(new[] { usernameChanged });
// 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 LoadEvents_restores_events_after_specified_version_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());
await sut.SaveEvents <FakeUser>(events);
// Act
IEnumerable <IDomainEvent> actual = await sut.LoadEvents <FakeUser>(userId, 1);
// Assert
actual.ShouldAllBeEquivalentTo(events.Skip(1));
}
public void SaveEvents_fails_if_kind_of_event_raised_time_is_not_utc(DateTimeKind dateTimeKind)
{
// Arrange
var userId = Guid.NewGuid();
var events = new DomainEvent[]
{
new FakeUserCreated(),
new FakeUsernameChanged(),
};
events.Raise(userId);
events.OrderBy(e => e.GetHashCode()).First().RaisedAt = new DateTime(DateTime.Now.Ticks, dateTimeKind);
var sut = new SqlEventStore(
() => new FakeEventStoreDbContext(_dbContextOptions),
new JsonMessageSerializer());
// Act
Func <Task> action = () => sut.SaveEvents <FakeUser>(events);
// Assert
action.ShouldThrow <ArgumentException>().Where(x => x.ParamName == "events");
}
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();
}
}
public void TestInitialize()
{
_fixture = new Fixture().Customize(new AutoMoqCustomization());
_fixture.Inject <Func <EventStoreDbContext> >(() => new DataContext());
_userId = Guid.NewGuid();
_serializer = new JsonMessageSerializer();
_fixture.Inject(_serializer);
_sut = _fixture.Create <SqlEventStore>();
_mockDbContext = Mock.Of <EventStoreDbContext>(
x => x.SaveChangesAsync() == Task.FromResult(default(int)));
_mockDbContext.Aggregates = Mock.Of <DbSet <Aggregate> >();
Mock.Get(_mockDbContext.Aggregates).SetupData();
_mockDbContext.PersistentEvents = Mock.Of <DbSet <PersistentEvent> >();
Mock.Get(_mockDbContext.PersistentEvents).SetupData();
_mockDbContext.PendingEvents = Mock.Of <DbSet <PendingEvent> >();
Mock.Get(_mockDbContext.PendingEvents).SetupData();
_mockDbContext.UniqueIndexedProperties = Mock.Of <DbSet <UniqueIndexedProperty> >();
Mock.Get(_mockDbContext.UniqueIndexedProperties).SetupData();
using (var db = new DataContext())
{
db.Database.Log = m => TestContext?.WriteLine(m);
db.Database.ExecuteSqlCommand("DELETE FROM Aggregates");
db.Database.ExecuteSqlCommand("DELETE FROM PersistentEvents");
db.Database.ExecuteSqlCommand("DELETE FROM PendingEvents");
db.Database.ExecuteSqlCommand("DELETE FROM UniqueIndexedProperties");
}
}
