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_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_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();
}
}